CN102253232A - Automatic analyzer and analysis method for water soluble total phosphorus - Google Patents

Abstract

The invention discloses a full-automatic analyzer and an analysis method for water soluble total phosphorus. The analyzer comprises a sample injection device and a color development detection device, wherein the sample injection device comprises an automatic sample injection device, a multi-way valve and a first peristaltic pump; the first peristaltic pump is provided with a first pump pipe; and the color development detection device comprises a second peristaltic pump, a first container bottle, a second container bottle, a third container bottle, a fourth container bottle, a fifth container bottle, a sampling ring, a first knitted reactor, a first three-way valve, a high temperature online heating module, a second three-way valve, a second knitted reactor, a first two-way valve, an ultraviolet digestion module, a third three-way valve, a third knitted reactor, a fourth three-way valve, a low temperature online heating module, a flowing pool, a detector, a data connection cable, a computer processing system, a waste liquid trough, a second backpressure adjuster and a plurality of capillaries. By the automatic analyzer and the analysis method for the water soluble total phosphorus, samples can be tested automatically and continuously, and the test is accurate and quick.

Description

The automatic analyzer of dissolubility total phosphorus and analytical approach thereof in the water

Technical field

The present invention relates to a kind of full-automatic flow injection analyzer and analytical approach thereof, relate in particular to the fully-automatic analyzer and the analytical approach thereof of dissolubility total phosphorus in a kind of water.

Background technology

The analysis of dissolubility total phosphorus in the water, use pressure cooker to clear up back ammonium molybdate spectrophotometric method among the national standard method GB11893-89, this method need use high pressure steam boiler in advance in the time of 120 ℃, after sample heated 30min, the phosphate of various forms in the water sample is cleared up for measuring behind the orthophosphate, in the process of mensuration, progressively be added ascorbic acid solution and molybdate solution, after at room temperature placing 15 minutes, under the 700nm wavelength, measure absorbance.Sample of methods analyst in the GB needs the time of 45min at least, and a big chunk time loss is in the pre-treatment of sample; In the process of measuring,, also need to use 20～30 ℃ water-bath to promote the generation of chromogenic reaction if room temperature is lower.

Simple, convenient for Flow Injection Analysis with it, realize robotization and can the online characteristics that sample is carried out pre-treatment being widely used in (Ruzicka J, Hansen E H in the chemical analysis at present easily, Flow Injection Analysis, Wiley, NewYork, 1981; Fang Zhaolun, flow injection analysis, Beijing: Science Press, 1999).With the dissolubility total phosphorus in the flow injection methods analyst water, commercial import instrument is arranged at present, but its method detection limit higher (generally about 100 μ g/L), and the Environmental Protection in China monitoring requires detection limit to be less than 20 μ g/L, its import instrument can not satisfy the demand of actual monitoring work.

Summary of the invention

The purpose of this invention is to provide and a kind ofly continuously and automatically sample is tested, test accurately fast, detectability is less than the fully-automatic analyzer and the analytical approach thereof of dissolubility total phosphorus in the water of 20 μ g/L.

Full-automatic flow injection analyzer provided by the present invention comprises sampling device and color developing detection device;

Described sampling device comprises automatic sampling apparatus, first peristaltic pump, described first peristaltic pump is provided with first pump line, the sample introduction needle of described automatic sampling apparatus is connected with the F port of multiport valve by described first pump line, and the A port of described multiport valve is connected with waste liquid tank by first back pressure regulator;

Described color developing detection device, comprise second peristaltic pump, first container bottle, second container bottle, the 3rd container bottle, the 4th container bottle, the 5th container bottle, sampling ring, multiport valve, first knitting reactor, first T-valve, the online heating module of high temperature, second T-valve, second knitting reactor, first two-way valve, ultraviolet are cleared up module, the 3rd T-valve, the 3rd knitting reactor, the 4th T-valve, the online heating module of low temperature, flow cell, detecting device, data stube cable and computer processing system, waste liquid tank, second back pressure regulator and some kapillaries; Second peristaltic pump is provided with second pump line, the 3rd pump line, the 4th pump line, the 5th pump line, the 6th pump line; First container bottle, second pump line, the D port of multiport valve connects by kapillary successively, the C port of multiport valve, first knitting reactor, an import of first T-valve connects by kapillary successively, the outlet of first T-valve, the online heating module of high temperature, an import of second T-valve connects by kapillary successively, the outlet of second T-valve, second knitting reactor, first two-way valve, ultraviolet is cleared up module, an import of the 3rd T-valve connects by kapillary successively, the outlet of the 3rd T-valve, the 3rd knitting reactor, an import of the 4th T-valve connects by kapillary successively, the outlet of the 4th T-valve, the online heating module of low temperature, flow cell, second back pressure regulator, waste liquid tank connects by kapillary successively, detecting device, the data stube cable links to each other successively with computer processing system, the two ends of sampling ring are connected the B port and the E port of multiport valve, second container bottle, the 3rd pump line, another import of first T-valve connects by kapillary successively, the 3rd container bottle, the 4th pump line, another import of second T-valve connects by kapillary successively, the 4th container bottle, the 5th pump line, another import of the 3rd T-valve connects by kapillary successively, the 5th container bottle, the 6th pump line, another import of the 4th T-valve connects by kapillary successively.

Full-automatic flow injection analyzer of the present invention, wherein, online heating module of described high temperature or the online heating module of described low temperature comprise heating rod, be sleeved on the outer good aluminium body of heat transfer property of heating rod, be wrapped in the teflon heated capillary and the thermometric thermal resistance that form the reaction pipeline of heating on the aluminium body, and being coated on the external muff of aluminium, thermal resistance is ceramic platinum resistance Pt100 or copper resistance Cu50 etc.

Full-automatic flow injection analyzer of the present invention, wherein, described ultraviolet is separated and is cleared up module, and ultraviolet lamp tube is installed on the ultraviolet lamp socket, and kapillary is wrapped in outside the ultraviolet lamp tube, and ultraviolet lamp tube is electrically connected with power supply.

Full-automatic flow injection analyzer of the present invention, wherein, described automatic sampling apparatus comprises sample introduction needle, test tube, sample disc, sample introduction needle service sink and pipeline service sink; The upper end of described sample introduction needle is connected with the capillary connecting pipe with described first pump line.

Full-automatic flow injection analyzer of the present invention, wherein, the internal diameter of described first pump line, described second pump line, described the 3rd pump line, described the 4th pump line, described the 5th pump line and described the 6th pump line is 0.38～1.85mm.

Full-automatic flow injection analyzer of the present invention, wherein, the capillary pipe length of described first knitting reactor is 0.5～1.5m; The capillary pipe length of described second knitting reactor is 2～5m; The capillary pipe length of described the 3rd knitting reactor is 0.5～3m; The capillary pipe length of the online heating module of described high temperature is 5～15m; The capillary pipe length that described ultraviolet is cleared up module is 2～10m; The capillary pipe length of the online heating module of described low temperature is 1～5m; The capillary pipe length of described sampling ring is 1～4m.

The full-automatic Flow Injection Analysis method of dissolubility total phosphorus comprises the steps: in the water provided by the present invention

Testing sample mixes for 100～150 ℃ with volumn concentration 5～20% sulfuric acid solutions;

Mixed solution and 20～30g/L potassium persulfate solution hybrid reaction;

Reacted solution is carried out ultraviolet and is cleared up reaction, and ultraviolet is cleared up reacted solution and chromogenic reagent solution hybrid reaction;

Mix with 50～100g/L ascorbic acid solution after the developer hybrid reaction, mix the back and react for 30～50 ℃, reacted liquid carries out colorimetric estimation at 700～880nm place;

Described developer is the solution of ammonium molybdate, potassium antimony tartrate and NaOH potpourri, and described ammonium molybdate concentration is 5～12g/L, and the concentration of described potassium antimony tartrate is 0.1～0.4g/L, and described concentration sodium hydroxide is 65～105g/L.

The automatic analyzer of dissolubility total phosphorus and analytical approach thereof can be tested sample continuously and automatically with the dissolubility total phosphorus in the flow injection methods analyst water in the water of the present invention, detect to be limited to 2 μ g/L, and test accurately fast.

Description of drawings

Fig. 1 is the structural representation of the fully-automatic analyzer of dissolubility total phosphorus in the water of the present invention.

Fig. 2 is the structural representation of online heating module of high temperature or the online heating module of low temperature.

Fig. 3 separates the structural representation of clearing up module for ultraviolet.

Embodiment

Be described further below in conjunction with the automatic analyzer of Figure of description dissolubility total phosphorus in the water of the present invention.

Referring to Fig. 1, the automatic analyzer of dissolubility total phosphorus in the water of the present invention comprises sampling device and color developing detection device;

Sampling device comprises automatic sampling apparatus 1, multiport valve 20, firstperistaltic pump 11, described firstperistaltic pump 11 is provided with first pump line 12, the sample introduction needle 5 of automatic sampling apparatus is connected with the F port of multiport valve 20 by first pump line 12, and the A port of multiport valve 20 is connected withwaste liquid tank 36 by firstback pressure regulator 37.

Automatic sampling apparatus 1 comprises sample introduction needle 5, sample disc 4, sample introduction needle service sink 3 and pipeline service sink 2;

The color developing detection device, comprise secondperistaltic pump 18,first container bottle 38, second container bottle 7, the 3rd container bottle 8, the 4th container bottle 9, the5th container bottle 10,sampling ring 19,first knitting reactor 21, first T-valve 22, the online heating module 23 of high temperature, second T-valve 24, second knitting reactor 25, first two-way valve 26, ultraviolet is cleared up module 27, the 3rd T-valve 28, the3rd knitting reactor 29, the 4th T-valve 30, theonline heating module 31 of low temperature, flow cell 32, detecting device 33, data stube cable 35 and computer processing system 34,waste liquid tank 36, second back pressure regulator 39 and some kapillaries.Second peristaltic pump is provided with second pump line 13, the 3rd pump line 14, the 4th pump line 15, the 5th pump line 16, the 6th pump line 17.First container bottle 38, second pump line 13, the D port of multiport valve 20 connects by kapillary successively, the C port of multiport valve 20,first knitting reactor 21, an import of first T-valve 22 connects by kapillary successively, the outlet of first T-valve 22, the online heating module 23 of high temperature, an import of second T-valve 24 connects by kapillary successively, the outlet of second T-valve 24, second knitting reactor 25, first two-way valve 26, ultraviolet is cleared up module 27, an import of the 3rd T-valve 28 connects by kapillary successively, the outlet of the 3rd T-valve 28, the3rd knitting reactor 29, an import of the 4th T-valve 30 connects by kapillary successively, the outlet of the 4th T-valve 30, theonline heating module 31 of low temperature, flow cell 32, second back pressure regulator 39,waste liquid tank 36 connects by kapillary successively, detecting device 33, data stube cable 35 links to each other successively with computer processing system 34, the two ends ofsampling ring 19 are connected the B port and the E port of multiport valve 20, second container bottle 7, the 3rd pump line 14, another import of first T-valve 22 connects by kapillary successively, the 3rd container bottle 8, the 4th pump line 15, another import of second T-valve 24 connects by kapillary successively, the 4th container bottle 9, the 5th pump line 16, another import of the 3rd T-valve 28 connects by kapillary successively, the5th container bottle 10, the 6th pump line 17, another import of the 4th T-valve 28 connects by kapillary successively.

The online heating module of online heating module 23 of high temperature orlow temperature 31 is with reference to Fig. 2, compriseheating rod 46, be sleeved on the outergood aluminium body 44 of heat transfer property of heating rod, be wrapped in the teflon heated capillary 48 and the thermometricthermal resistance 45 that form the reaction pipeline of heating on the aluminium body, and being coated on the external muff ofaluminium 47,thermal resistance 45 is ceramic platinum resistance Pt100 or copper resistance Cu50 etc.

Ultraviolet is cleared up module 27 structures with reference to Fig. 3 separating, andultraviolet lamp tube 52 is installed on theultraviolet lamp socket 53, andkapillary 51 is wrapped in outside theultraviolet lamp tube 52, andultraviolet lamp tube 52 is electrically connected with power supply.The wavelength of uviol lamp is 254nm, and power is 8-24W.

Firstperistaltic pump 11, second peristaltic pump, 18 pump line internal diameters are 0.38～1.85mm, and pump speed is 15～60 rev/mins.First knitting reactor, 21 capillary pipe lengths are 0.5～1.5m; Second knitting reactor, 25 capillary pipe lengths are 2～5m, are wrapped on the bobbin winder bracket of metal; The 3rd knittingreactor 29 capillary pipe lengths are 0.5～3m; The capillary pipe length of the online heating module 23 of high temperature is 5～15m, and the capillary pipe length that ultraviolet is cleared up module 27 is 2～10m, and the capillary pipe length of theonline heating module 31 of low temperature is 1～5m; The capillary pipe length ofsampling ring 19 is 1～4m.The temperature of the online heating module 23 of high temperature is 100～150 ℃, and the temperature of theonline heating module 31 of low temperature is 30～50 ℃, and the wavelength that ultraviolet is cleared up module 27 is 200～300nm, and power is 8～20w.The used internal diameter capillaceous of the present invention is 0.5～1.0mm, and multiport valve is the multiport valve with 6～24 ports, and the light path of flow cell is 10～50mm, and the detection wavelength of detecting device is 700～880nm.

Adorn deionized water infirst container bottle 38; Dress sulfuric acid digestion solution in second container bottle 7, the concentration of sulfuric acid is 5～20% (volumn concentrations); Adorn potassium persulfate solution in the 3rd container bottle 8, the concentration of potassium persulfate is 20～30g/L; Adorn developer in the 4th container bottle 9, developer is the solution of ammonium molybdate, potassium antimony tartrate and NaOH potpourri, and ammonium molybdate concentration is 5～12g/L, and the concentration of potassium antimony tartrate is that 0.1～0.4g/L, concentration sodium hydroxide are 65～105g/L; The concentration of adorning ascorbic acid solution, ascorbic acid in the5th container bottle 10 is 50～100g/L.

The course of work of the automatic analyzer of dissolubility total phosphorus is as follows in the water of the present invention:

Sample after filtering is placed in the sample hose 6, by automatic sampling apparatus 1 under the effect ofperistaltic pump 11 through first pump line 12, enter thesampling ring 19 that connects on the six-way valve 20,sampling ring 19 is full of after the 37 direct waste discharges of first back pressure regulator enter waste liquid bottle 36.After sampling process finishes, six-way valve 20 turns to the state shown in the dotted line among the figure,peristaltic pump 18 pumps into current-carrying solution, sample in thesampling ring 19 is released, in first knittingreactor 21, mix, enter in first T-valve 22 and converge with sulfuric acid solution, in the online heating module 23 of high temperature, mix, mixed solution converges with potassium persulfate solution in second T-valve 24, reaction in second knitting reactor 25, reacted solution is through first two-way valve 26, enter ultraviolet and clear up module 27, reacted solution is advanced in the 3rd T-valve 28 and is converged with chromogenic reagent solution, and reaction in the 3rd knittingreactor 29 enters the 4th T-valve 30 and converges with ascorbic acid solution after the mixing, enter after the mixing in theonline heating module 31 of low temperature and react, reacted liquid carries out colorimetric estimation by detecting device 33 at 700～880nm place in the pond 32 that circulates, and the liquid that flows out directly enters wasteliquid bottle 36 through second back pressure regulator 39.

In using water of the present invention during the automatic analyzer of dissolubility total phosphorus, standard solution and sample are poured into respectively in the sample hose of automatic sampling apparatus, can analyze automatically, absorbance peak height or peak area according to the standard solution that writes down are done typical curve, and absorbance peak height value per sample or peak area value can calculate the content of dissolubility total phosphorus in the sample on typical curve.

Adopt automatic analyzer of the present invention to test, the sample fillup valve is a six-way valve, the capillary inner diameter of stream is 0.8mm, the capillary pipe length of first knittingreactor 21 is 1m in the analyzing and testing stream, the capillary pipe length of second knitting reactor 25 is 3m, the capillary pipe length of the 3rd knittingreactor 29 is 2.5m, and the length of other capillary connecting pipe is 0.5m, and the length ofsampling ring 19 is 1m.The light path of flow cell 32 is 10mm, and capillary pipe length is 4m in the high temperature heating module 23,125 ℃ of heating-up temperatures; Capillary pipe length is 4m in the low-temperature heat module 31, and the capillary pipe length that 37 ℃ of heating-up temperatures, ultraviolet are cleared up module is 6m, and power is 8W, measures at the 880nm place.

1, the preparation of standard specimen

Standard model preparation: take by weighing 4.396g in 110 ℃ of dry 2h and in exsiccator, put cold anhydrous potassium dihydrogenphosphate (KH₂PO₄), water dissolving back is shifted and is settled to the 1000ml volumetric flask, and the phosphorus storing solution that is mixed with 1000mg P/L is standby.

With the phosphorus storing solution deionized water stepwise dilution of 1000mg/L, be configured to 0.0,0.01,0.02,0.05,0.1,0.2,0.4, the 1.0mg/L standard series.

2, the preparation of reagent

In the present embodiment, testing sample mixes for 125 ℃ withvolumn concentration 10% sulfuric acid solution;

Mixed solution and 23.78g/L potassium persulfate solution hybrid reaction;

Reacted solution is carried out ultraviolet and is cleared up reaction, and ultraviolet is cleared up reacted solution and chromogenic reagent solution hybrid reaction;

Mix with the 80g/L ascorbic acid solution after the developer hybrid reaction, mix back 47.5 ℃ and react, reacted liquid carries out colorimetric estimation at the 880nm place;

Described developer is the solution of ammonium molybdate, potassium antimony tartrate and NaOH potpourri, and described ammonium molybdate concentration is 7g/L, and the concentration of described potassium antimony tartrate is 0.34g/L, and described concentration sodium hydroxide is 90g/L.

Agents useful for same all adopts domestic reagent, and the purity of reagent is minimum pure for analyzing.

3, sample introduction

Draw sample in the sample hose 6 of sample introduction needle 5 from be inserted in sample disc 4, sample pumps into sample fillup valve 20 by peristaltic pump, and after sample was full ofsampling ring 19, unnecessary sample entered wasteliquid tank 36.

4, response measurement

Sample after filtering is placed in the sample hose 6, by automatic sampling apparatus 1 under the effect ofperistaltic pump 11 through first pump line 12, enter thesampling ring 19 that connects on the six-way valve 20,sampling ring 19 is full of after the 37 direct waste discharges of first back pressure regulator enter waste liquid bottle 36.After sampling process finishes, six-way valve 20 turns to the state shown in the dotted line among the figure,peristaltic pump 18 pumps into current-carrying solution, sample in thesampling ring 19 is released, in first knittingreactor 21, mix, enter in first T-valve 22 and converge with sulfuric acid solution, in the online heating module 23 of high temperature, mix, mixed solution converges with potassium persulfate solution in second T-valve 24, reaction in second knitting reactor 25, reacted solution is through first two-way valve 26, enter ultraviolet and clear up module 27, reacted solution is advanced in the 3rd T-valve 28 and is converged with chromogenic reagent solution, and reaction in the 3rd knittingreactor 29 enters the 4th T-valve 30 and converges with ascorbic acid solution after the mixing, enter after the mixing in theonline heating module 31 of low temperature and react, reacted liquid carries out colorimetric estimation by detecting device 33 at 700～880nm place in the pond 32 that circulates, and the liquid that flows out directly enters wasteliquid bottle 36 through second back pressure regulator 39.

Table 1 is the test result of standard model, and table 2 is the test result of actual sample, the Precision test result that table 3 is measured for actual sample.

The test result of table 1. standard model

Dissolubility total phosphorus content measurement result in table 2. actual sample

Concentration (μ g/L) rate of recovery (%) running water 11.8 10.0 21.1 92.9 surface water 66.3 10.0 75.9 95.6 underground water 4.2 10.0 14.0 97.3 sewage (diluting 10 times) 273.5 400.0 663.1 97.4 behind sample title sample concentration (μ g/L) mark-on concentration (μ g/L) mark-on

Dissolubility total phosphorus content measurement result in table 3. actual sample

RSD measures number of times absorbance (peak height) absorbance (peak area) and returns calculation concentration (μ g/L) 1 0.0105 3.655 101.411 2 0.0106 3.677 101.961 3 0.0104 3.634 100.885 4 0.0105 3.663 101.603 5 0.0106 3.633 100.84 6 0.0104 3.632 100.825 7 0.0104 3.648 101.222

The range of linearity of method is 0.01～2.0mg P/L, and linearly dependent coefficient r 〉=0.999 detects and is limited to 0.002mg P/L, and the recovery of standard addition of actual water sample is 90%～110%; The precision height, the sample relative standard deviation of 0.1mg P/L is 0.43%.

Above embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.

Claims (7)

1. the fully-automatic analyzer of dissolubility total phosphorus in the water is characterized in that: comprise sampling device and color developing detection device;

Described sampling device comprises automatic sampling apparatus (1), first peristaltic pump (11) and multiport valve (20), described first peristaltic pump (11) is provided with first pump line (12), the sample introduction needle (5) of described automatic sampling apparatus (1) is connected with the F port of multiport valve (20) by described first pump line (12), and the A port of described multiport valve 20 is connected with waste liquid tank (36) by first back pressure regulator (37);

Described color developing detection device, comprise second peristaltic pump (18), first container bottle (38), second container bottle (7), the 3rd container bottle (8), the 4th container bottle (9), the 5th container bottle (10), sampling ring (19), first knitting reactor (21), first T-valve (22), the online heating module of high temperature (23), second T-valve (24), second knitting reactor (25), first two-way valve (26), ultraviolet are cleared up module (27), the 3rd T-valve (28), the 3rd knitting reactor (29), the 4th T-valve (30), the online heating module of low temperature (31), flow cell (32), detecting device (33), data stube cable (35) and computer processing system (34), waste liquid tank (36), second back pressure regulator (39) and some kapillaries; Second peristaltic pump is provided with second pump line (13), the 3rd pump line (14), the 4th pump line (15), the 5th pump line (16), the 6th pump line (17); First container bottle (38), second pump line (13), the D port of multiport valve (20) connects by kapillary successively, the C port of multiport valve (20), first knitting reactor (21), an import of first T-valve (22) connects by kapillary successively, the outlet of first T-valve (22), the online heating module of high temperature (23), an import of second T-valve (24) connects by kapillary successively, the outlet of second T-valve (24), second knitting reactor (25), first two-way valve (26), ultraviolet is cleared up module (27), an import of the 3rd T-valve (28) connects by kapillary successively, the outlet of the 3rd T-valve (28), the 3rd knitting reactor (29), an import of the 4th T-valve (30) connects by kapillary successively, the outlet of the 4th T-valve (30), the online heating module of low temperature (31), flow cell (32), second back pressure regulator (39), waste liquid tank (36) connects by kapillary successively, detecting device (33), data stube cable (35) links to each other successively with computer processing system (34), the two ends of sampling ring (19) are connected the B port and the E port of multiport valve (20), second container bottle (7), the 3rd pump line (14), another import of first T-valve (22) connects by kapillary successively, the 3rd container bottle (8), the 4th pump line (15), another import of second T-valve (24) connects by kapillary successively, the 4th container bottle (9), the 5th pump line (16), another import of the 3rd T-valve (28) connects by kapillary successively, the 5th container bottle (10), the 6th pump line (17), another import of the 4th T-valve (28) connects by kapillary successively.

2. fully-automatic analyzer according to claim 1, it is characterized in that: online heating module of described high temperature (23) and the online heating module of described low temperature (31) include heating rod (46), be sleeved on the outer good aluminium body of heat transfer property (44) of heating rod (46), be wrapped in aluminium body (44) and go up the teflon heated capillary (48) and the thermometric thermal resistance (45) of the reaction pipeline that forms heating, and being coated on the outer muff (47) of aluminium body (44), thermal resistance (45) is ceramic platinum resistance Pt100 or copper resistance Cu50 etc.

3. fully-automatic analyzer according to claim 1 and 2, it is characterized in that: described ultraviolet is separated the ultraviolet lamp tube (52) of clearing up module (27) and is installed on the ultraviolet lamp socket (53), kapillary (51) is wrapped in outside the described ultraviolet lamp tube (52), and described ultraviolet lamp tube (52) is electrically connected with power supply.

4. fully-automatic analyzer according to claim 3 is characterized in that: described automatic sampling apparatus (1) comprises sample introduction needle (5), sample disc (4), sample introduction needle service sink (3), test tube (6) and pipeline service sink (2); The upper end of described sample introduction needle (5) is connected with the capillary connecting pipe with described first pump line (12).

5. fully-automatic analyzer according to claim 4 is characterized in that: the internal diameter of described first pump line (12), described second pump line (13), described the 3rd pump line (14), described the 4th pump line (15), described the 5th pump line (16) and described the 6th pump line (17) is 0.38～1.85mm.

6. fully-automatic analyzer according to claim 5 is characterized in that: the capillary pipe length of described first knitting reactor is 0.5～1.5m; The capillary pipe length of described second knitting reactor is 2～5m; The capillary pipe length of described the 3rd knitting reactor is 0.5～3m; The capillary pipe length of the online heating module of described high temperature is 5～15m; The capillary pipe length that described ultraviolet is cleared up module is 2～10m; The capillary pipe length of the online heating module of described low temperature is 1～5m; The capillary pipe length of described sampling ring is 1～4m.

7. the method for dividing dissolubility total phosphorus in the bleed with arbitrary described fully-automatic analyzer in the claim 1 to 6 comprises the steps:

Testing sample mixes for 100～150 ℃ with volumn concentration 5～20% sulfuric acid solutions;

Mixed solution and 20～30g/L potassium persulfate solution hybrid reaction;

Reacted solution is carried out ultraviolet and is cleared up reaction, and ultraviolet is cleared up reacted solution and chromogenic reagent solution hybrid reaction;

Mix with 50～100g/L ascorbic acid solution after the developer hybrid reaction, mix the back and react for 30～50 ℃, reacted liquid carries out colorimetric estimation at 700～880nm place;

Described developer is the solution of ammonium molybdate, potassium antimony tartrate and NaOH potpourri, and described ammonium molybdate concentration is 5～12g/L, and the concentration of described potassium antimony tartrate is 0.1～0.4g/L, and described concentration sodium hydroxide is 65～105g/L.

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