CN202676514U - Passive type filling type adsorption sampling device for air volatile contaminant concentration detection - Google Patents
Passive type filling type adsorption sampling device for air volatile contaminant concentration detection Download PDFInfo
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- CN202676514U CN202676514U CN 201220149200 CN201220149200U CN202676514U CN 202676514 U CN202676514 U CN 202676514U CN 201220149200 CN201220149200 CN 201220149200 CN 201220149200 U CN201220149200 U CN 201220149200U CN 202676514 U CN202676514 U CN 202676514U
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Abstract
The utility model relates to a passive type filling type adsorption sampling device for an air volatile contaminant concentration detection, and belongs to the technical filed of indoor environment detection. The sampling device comprises an outer cover, a base seat and an outer shell, wherein the outer cover is covered on the base seat, the outer shell is arranged on a base seat boss inside the outer cover, a rubber washer is arranged between the outer shell and the base seat, and particle type adsorbent is filled inside the outer shell. Passive type adsorption sampling is used, so that the adsorption sampling on the radial direction of the outer shell can be achieved without adding outer motive power after the filling of particle materials, the adsorption area is large, and the material consumption is saved. Targeted contaminants are various indoor organic volatile contaminants, the contaminants are placed in a thermal desorption pipe after sampled, and a gas chromatograph with thermal desorption or automatic thermal desorption function, or a gas chromatograph-mass spectrometer chromatographic instrument is directly used to analyze the sample concentration. The sampling device is small and convenient to carry, and can be placed interiorly to detect the average concentration of the contaminants for a certain period of time, and can be wore on the person to detect the amount of the average exposing for a certain period of time. Ageing filler can be reused after regeneration.
Description
Technical field
The utility model belongs to the Indoor Environment Detection field, particularly a kind of passive adsorbing and sampling device for indoor volatility chemical contamination substrate concentration detection.
Background technology
Indoor air quality appreciable impact people's comfortable, health and work efficiency more and more receive people's concern.And organic volatile compound (VOCs) excessive concentration that indoor article and decoration material discharge is the one of the main reasons that causes indoor air quality inferior.For guaranteeing the indoor environment of safety and comfort, very important to the detection of indoor chemical pollutant.The detection method of science can help indoor user to understand daily residing environment whether to reach safety standard, timely and effectively underproof indoor environment is taked to administer and measures to rectify and reform, evades risk of environmental pollution, satisfies health of people and comfortable requirement.Yet present room air detects the general spot sampling method that adopts, and needs the testing staff to carry instrument and medicine to execute-in-place, and manpower and waste of time are so that testing cost is high, and much average families are hung back to Indoor Environment Detection.Therefore desirable room air detection Sampling techniques should have following characteristics: the first, do not need the sampling of technician's execute-in-place.The second, cost low (comprising material cost, time cost and cost of human resources) makes average family be easy to bear.The 3rd, it is common that target contaminant should be set as room air, and the pollutant closely bound up with human health, such as organic volatile compound (VOCs).The 4th, can be combined with the comparatively accurate method of sampling, for example internationally recognized gas chromatography (GC) or gas chromatography mass spectrometry chromatogram (GC-MS) detect, and guarantee the accuracy that detects.The 5th, the equipment of same sampling can be realized the sampling to multiple pollutant.The 6th, the manufacturing that detects sample devices should take into account simple, small and exquisite, portable and efficient.The 7th, the used sorbing material range of choice of sampling is wide.Yet present existing sampling thief is be weak in these areas more.For example the solid phase adsorption air pollutants sampling thief of design in the patent 03134701.0 is to add the synthon that flooded the pollutant absorption liquid in glass tube.This sampling thief only carries out adsorption sampling by the area of the axial limited of glass tube, and the equivalent sampling quantity is little, and the post analysis error is large.Simultaneously, this sampling thief can not add gas phase chromatogram (GC) coupling in conjunction with thermal desorption, the accurate and versatility of the analysis after can not guaranteeing to sample.The target contaminant of this sampling thief is a kind of in nitrogen dioxide, sulphuric dioxide, formaldehyde, the ammonia in room air, atmosphere, public place air, the workshop air, both do not contained indoor modal pollutant organic volatile compound (VOCs), can not realize that same sampling thief gathered the purpose of multiple pollutant.
Summary of the invention
The purpose of this utility model is in order to overcome existing deficiency for indoor volatile organic compound pollutant sampling thief, the passive filling adsorption sampling device that provides a kind of air volatile contaminant concentration to detect, this sampling apparatus small volume and less weight, simple and reliable, can be used in conjunction with TD and GC, GC-MS and detect, the Computer-Assisted Design, Manufacture And Test cost is not high, and can realize the function of a multiple dusty gas of pipe collection.
The air volatile contaminant concentration that the utility model proposes detects passive filling adsorption sampling device, comprises outer cover, base and shell; Described outer cover covers on the base, and described shell places on the interior base boss of outer cover, is provided with rubber washer between shell and the base, is filled with the granular pattern adsorbent in the shell.
The air volatile contaminant concentration that the utility model proposes detects passive filling adsorption sampling device, adopts the mode of passive type adsorption sampling, does not need additionaling power; Product adopts hydrophobic shell, to any filler, affected by ambient humidity little; Can realize particulate material fill after in shell adsorption sampling in the radial direction, adsorption area is large, saves material usage, to the sorbing material profile without specific (special) requirements; Target contaminant is multiple indoor organic volatile pollutant, sampling is placed in the thermal desorption pipe, directly uses gas chromatograph (GC) or gas chromatography mass spectrometry chromatograph (GC-MS) analytic sample concentration with thermal desorption (TD) or automatic heating desorption (ATD) function; Small and exquisite, portable.
The utility model can realize that the moving adsorption sampling pipe of a velamen detects the function of multiple dusty gas, detect and low cost of manufacture, and can realize in thermal desorption (TD) or automatic heating desorption (ATD) behind the desorption accurate Analysis in gas chromatography (GC) or gas chromatography mass spectrometry chromatogram (GC-MS).By the drawing standard curve, the reference standard curve can be realized the measurement to indoor volatile organic compounds concentration.
This device can place the mean concentration of Indoor measurement certain hour internal contamination thing, and the personnel that can be worn on measure the mean exposure measurement in the certain hour with it; Reusable behind the adsorbent aging regeneration of filling; Small and exquisite, portable; Greatly reduce testing cost.
Description of drawings
Fig. 1 is passive type adsorption sampling pipe general structure schematic diagram of the present utility model.
Among Fig. 1, the 1st, shell, the 2nd, base, the 3rd, outer cover, the 4th, rubber washer, the 5th, granular pattern adsorbent.
Embodiment
The air volatile contaminant concentration that the utility model proposes detects passive filling adsorption sampling device, and its structure comprises outer cover 3, base 2 and shell 1 as shown in Figure 1.Outer cover 3 covers on the base 2, and described shell 1 places on the base boss in the outer cover 3, is provided with rubber washer 4 between shell 1 and the base 2, is filled with granular pattern adsorbent 5 in the shell 1.
The each several part embodiment of the utility model device is described in detail as follows:
Porous shell 1 can be selected hydrophobic porosint such as porous polyethylene, and porous Teflon is made an end and sealed the pipe that an end opens wide, and the porous shell internal volume is not more than the capacity of thermal desorption pipe.
Base 2 can adopt teflon or polythene material to make, and is double-deck round table-like, and round platform center, upper strata has the circular trough identical with the porous shell outside dimension, is used for the placing porous shell; Lower floor's round platform is used for placing outer cover, makes the porous shell in the outer cover be in closed state by rubber washer.Whole submount material is the interior organic volatile pollutant of adsorption chamber not, and on not impact of sampling, base only plays the effect of support and placing porous shell.
The internal diameter of outer cover 3 is slightly larger than the external diameter of the upper strata platform of base 2, when covering outer cover, can realize sealing with rubber washer 4, and the dusty gas that makes sampling can diffusion, causes the inaccurate of detection.Outer cover 3 can select the minimum materials of coefficient of diffusion such as glass or stainless steel to make.
Granular pattern adsorbent 5 can be selected the porous adsorbing material of adsorbable indoor organic volatile pollutant, is easy to put into thermal desorption after the sampling and resolves.Sorbing material hydrophobicity and the profile of filling there is not specific (special) requirements.Can select multiple granular pattern adsorbent, such as molecular sieve, silica gel, high-molecular porous resin, activated charcoal etc.If select commercially available Tenax-TA granular pattern adsorbent, then not only can measure the concentration of various VOCs, according to the definition of GB18883 State Standard of the People's Republic of China IAQ (indoor air quality) standard to total volatile organism (TVOC), can also measure TVOC content.
Principle of work of the present utility model:
This sampling apparatus is opened wide outer cover put into a plurality of uniform temps, in the environment of different pollutant levels, pass through regular time, by thermal desorption and GC (or GC-MS) Dissociative adsorption amount at every turn, can obtain the typical curve (horizontal ordinate is concentration, and ordinate is adsorbance) under this temperature.Change humiture, can obtain the typical curve under many different temperatures.
The course of work of the present utility model:
This sampling apparatus is used in and detects in the sampling process, and is at first unlimited this device outer cover, is placed in the environment that will measure, and time length is with to do the used time of typical curve identical.After cover tightly outer cover 3.Take back laboratory or monitoring station, granular pattern adsorbent 5 is put into thermal desorption pipe desorption, by GC (or GC-MS) Dissociative adsorption amount, the reference standard curve can check in the various organic volatile pollutant levels of institute's testing environment.
Claims (1)
1. an air volatile contaminant concentration detects passive filling adsorption sampling device, it is characterized in that this sampling apparatus comprises outer cover, base and shell; Described outer cover covers on the base, and described shell places on the interior base boss of outer cover, is provided with rubber washer between shell and the base, is filled with the granular pattern adsorbent in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149200 CN202676514U (en) | 2012-04-10 | 2012-04-10 | Passive type filling type adsorption sampling device for air volatile contaminant concentration detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220149200 CN202676514U (en) | 2012-04-10 | 2012-04-10 | Passive type filling type adsorption sampling device for air volatile contaminant concentration detection |
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| Publication Number | Publication Date |
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| CN202676514U true CN202676514U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220149200 Expired - Lifetime CN202676514U (en) | 2012-04-10 | 2012-04-10 | Passive type filling type adsorption sampling device for air volatile contaminant concentration detection |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398878A (en) * | 2013-08-15 | 2013-11-20 | 深圳市建筑科学研究院有限公司 | Passive air sampler |
| CN103852370A (en) * | 2014-03-04 | 2014-06-11 | 天津市环境保护科学研究院 | Mobile low-temperature adsorption concentration-thermal desorption device and application method thereof |
| CN103926116A (en) * | 2014-04-29 | 2014-07-16 | 深圳市建筑科学研究院股份有限公司 | Sampling core for air sampler |
| CN108956859A (en) * | 2018-05-16 | 2018-12-07 | 暨南大学 | A kind of method and Related product measuring pollutant concentration in Human body package environment |
| CN110187018A (en) * | 2019-05-10 | 2019-08-30 | 天津大学 | The detection method of volatile organic compounds in indoor air concentration based on passive sampling |
-
2012
- 2012-04-10 CN CN 201220149200 patent/CN202676514U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398878A (en) * | 2013-08-15 | 2013-11-20 | 深圳市建筑科学研究院有限公司 | Passive air sampler |
| CN103852370A (en) * | 2014-03-04 | 2014-06-11 | 天津市环境保护科学研究院 | Mobile low-temperature adsorption concentration-thermal desorption device and application method thereof |
| CN103926116A (en) * | 2014-04-29 | 2014-07-16 | 深圳市建筑科学研究院股份有限公司 | Sampling core for air sampler |
| CN103926116B (en) * | 2014-04-29 | 2017-01-11 | 深圳市建筑科学研究院股份有限公司 | Sampling core for air sampler |
| CN108956859A (en) * | 2018-05-16 | 2018-12-07 | 暨南大学 | A kind of method and Related product measuring pollutant concentration in Human body package environment |
| CN110187018A (en) * | 2019-05-10 | 2019-08-30 | 天津大学 | The detection method of volatile organic compounds in indoor air concentration based on passive sampling |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |