CN202886151U - Ambient air sampling bottle - Google Patents

Abstract

The utility model discloses an ambient air sampling bottle which is characterized by comprising a central-through type cylindrical bottle body, as well as an upper-end bottle plug and a lower-end bottle plug which are arranged at the two ends of the bottle body respectively, wherein the outer diameters of the upper-end bottle plug and the lower-end bottle plug are equal to the inner diameter of the cylindrical bottle body; the lower-end bottle plug is of a flat-bottom structure; and a sample filling hole and a gas sample leading-out hole are formed in the upper-end bottle plug and sealed via sealing plugs. The ambient air sampling bottle disclosed by the utility model can be used for collecting ambient air, preparing a standard gas sample, and analysing trace organic compounds in ambient air. Compared with the existing gas sampling devices, the sampling bottle is simple to treat, rapid in sampling, and capable of reducing analysis errors and improving analysis accuracy and repeatability.

Description

A kind of surrounding air sampling jar

Technical field

The utility model relates to a kind of surrounding air sampling jar, can be used for the gas sample of atmospheric environment test, industrial gasses test and indoor air quality test.

Background technology

At present, the general gas flow sampling apparatus all is to adopt SUMMA tank or gas sampling bag to sample.Such as the disclosed gas sampling SUMMA of US5691487 tank, be after negative pressure is pumped into first in its inside, to place sampled point, turn on switch, utilize its inner negative pressure that gaseous sample is collected in the tank.The disclosed gaseous sample sample mode of US0269350 is directly to gather air by pumping.

The above-mentioned gas sampling apparatus has following deficiency when volatile organic contaminant is analyzed in gathering surrounding air:

(1) Soviet Union's agate tank generally is used for the collection of light concentration gas, because its Bottle structure be spherical flat and with vacuum pressure valve, so easy cleaning and cause at the bottom of the sample copy highlyer not can cause error to next sampled measurements.

(2) gas sampling bag generally is square, because square bag dead volume is large, after each test, residual gas is difficult to complete emptying in the bag, causes measurement result and actual value to have deviation.

What (three) above-mentioned two kinds of gas sampling assemblies utilized when sampling all is that negative pressure or pumping collect gaseous sample in SUMMA tank or the gas sampling bag, this is just so that all there is certain high pressure in the gaseous sample in Soviet Union's agate tank or the gas sampling bag, physics or chemical change may occur in the organic compound in the gaseous sample under the high pressure conditions, cause analytical error.

(4) sample that gathers of above-mentioned two kinds of gas sampling assemblies is when entering the laboratory and analyze, to analyze by modes such as direct injected or other pre-concentration processing, when quantitative test, just can not to mark in the adding in the gaseous sample to be analyzed, therefore can limit the accuracy of quantitative test like this.

Summary of the invention

The purpose of this utility model provides a kind of surrounding air sampling jar of new structure just for the deficiencies in the prior art, utilize this sampling jar to shorten and process and the sampling time, reduces the sample analysis error, improves quantitative test accuracy and repeatability.

The purpose of this utility model is achieved through the following technical solutions:

Surrounding air sampling jar of the present utility model, comprise the cylindrical bottle of formula of and be located at respectively upper end bottle stopper and the lower end bottle stopper at bottle two ends, and the external diameter of upper end bottle stopper, lower end bottle stopper is identical with the internal diameter of cylindrical bottle, the lower end bottle stopper is flat-bottom structure, offers sample at the upper end bottle stopper and adds hand-hole gentle body sample fairlead and seal by sealing-plug.

In the utility model, the cylindrical bottle of described formula of is the sandwich construction that can be communicated with recirculated water, and thickness of interlayer is 3.0 ± 0.2 mm.

In bottle, be placed with the magnetic agitation rotor, be used for the volatilization of normal fluid sample.

Described bottle generally adopts glass, stainless steel or selects material according to sampling media, and the bottle volume can be determined as required, such as 0.1 L, 0.5 L, 1 L etc.

Described bottle stopper material is the materials such as teflon, glass or stainless steel; Described sealing-plug can be the materials such as fluororubber, nitrile rubber, silica gel, polypropylene.

Sample adds hand-hole and can internal standard compound be injected in the hole thus by micro syringe; The gaseous sample fairlead can utilize kapillary that gaseous sample is drawn, and kapillary is stainless steel capillary or quartz capillary, and caliber size can be determined according to the actual analysis needs.

Described surrounding air sampling jar bottle inwall and bottle stopper all pass through Passivation Treatment.

The utlity model has following advantage:

(1) sampling bottle is processed simple.Bottle structure of the present utility model is that formula of is cylindrical, easy Passivation Treatment, and simply and not there is dead volume in cleaning, and this just brings convenience for sampling bottle recycles.

(2) sampling is convenient and swift.When needs are sampled, place sampled point to leave standstill balanced sample sampling bottle, then with the bottle stopper good seal at two ends, just finish in a short period of time sampling work.The utility model is easy to connect, and is simple to operate quick.

(3) institute's ambient air sampling of adopting is in stable condition, and analytical error is little.The sampling of leaving standstill of sampling jar has substituted traditional pumping or negative pressure acquisition mode in the utility model, the gaseous sample that gathers not existence changes, gaseous sample need not any concentrated or pre-service, reduced to greatest extent gaseous sample because the loss that sampling and physics or chemical change cause reduces analytical error.

(4) quantitative test is accurate.The utility model not only can be used for the collection of ambient air sampling, can be used for simultaneously the preparation of calibrating gas sample, realizes the same state analysis with ambient air sampling; In addition, the utility model can add interior mark when carrying out sample analysis, and this is just so that quantitative test accuracy and repeatability are better.

Description of drawings

Fig. 1 is the structural representation of the utility model surrounding air sampling jar.

Fig. 2 is the structural representation that adds the upper end bottle stopper of hand-hole and sample gas fairlead with sample.

Wherein: the 1st, bottle, the 2nd, interlayer, the 3rd, the magnetic agitation rotor, the 4th, the lower end bottle stopper, the 5th, the upper end bottle stopper, the 6th, sealing-plug, the 7th, sample adds hand-hole, and the 8th, gaseous sample fairlead, the 9th, micro syringe, the 10th, kapillary.

Embodiment

Further specify structure and the using method of the utility model surrounding air sampling jar below in conjunction with accompanying drawing.

The sampling analysis of surrounding air

During sampling environment air, thebottle 1 of will taking a sample places sampled point to leave standstillbalanced sample 3 ~ 5 min, uses upper and lowerside bottle stopper 4,5 with its good seal.The ambient air sampling that gathers is transferred to the laboratory, adding hand-hole 7 by sample joins interior mark in the sampling jar with micro syringe 9, aftermagnetic agitation rotor 3 stirred volatilization evenly with it, ambient air sampling was introduced directly into analytical instrument by the kapillary 10 ofgaseous sample fairlead 8.

The preparation of calibrating gas sample

Cover with the lowerend bottle stopper 4 ofsampling bottle 1 with the upperend bottle stopper 5 that sample adds hand-hole 7, gaseous sample fairlead 8 and to place on the experimental operation table.The standard solution of getting analysans with micro syringe 9 joins in the sampling jar by the sealing-plug 6 that sample adds hand-hole 7, aftermagnetic agitation rotor 3 stirred it, the calibrating gas sample was introduced directly into analytical instrument by the kapillary 10 ofgaseous sample fairlead 8.

Claims (3)

1. surrounding air sampling jar, it is characterized in that: comprise the cylindrical bottle of formula of and be located at respectively upper end bottle stopper and the lower end bottle stopper at bottle two ends, and the external diameter of upper end bottle stopper, lower end bottle stopper is identical with the internal diameter of cylindrical bottle, the lower end bottle stopper is flat-bottom structure, offers sample at the upper end bottle stopper and adds hand-hole gentle body sample fairlead and seal by sealing-plug.

2. surrounding air sampling jar according to claim 1 is characterized in that: the sandwich construction of the cylindrical bottle of described formula of for being communicated with recirculated water.

3. surrounding air sampling jar according to claim 1 is characterized in that: be placed with the magnetic agitation rotor in bottle.

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