CN102798555A - Method for sampling organic volatile compound in product/sample and collector - Google Patents
Method for sampling organic volatile compound in product/sample and collector Download PDFInfo
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- CN102798555A CN102798555A CN201210280888XA CN201210280888A CN102798555A CN 102798555 A CN102798555 A CN 102798555A CN 201210280888X A CN201210280888X A CN 201210280888XA CN 201210280888 A CN201210280888 A CN 201210280888A CN 102798555 A CN102798555 A CN 102798555A
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Abstract
The invention relates to a method for sampling an organic volatile compound in a product/sample, belonging to the detection field of gas sampling methods and instruments, and a collector. The collector comprises a sampling bag, wherein a product/sample is put inside the sampling bag; the collector further comprises a vacuum pump, a gas bottle, a constant current sampler and a gas flowmeter or a gas volume control device, wherein the vacuum pump, the gas bottle and the constant current sampler can be connected with the sampling bag; the gas flowmeter or the gas volume control device is used for controlling the volume of the gas aerated into the sampling bag; the sampling bag is provided with an inlet through which the product/sample is put in; and the sampling bag is further provided with a gas sucking inlet which is used for connecting the gas bottle and the vacuum pump, and a sampling port for being connected with the constant current sampler. The method has the beneficial effects of being low in cost and easy to operate; the volatile pollutant sampling can be carried to the whole product/sample under the condition that the product/sample is not damaged; the method is low in cost and easy to realize; the method can be used as a novel sampling method and the collector can be used as novel a collecting device for detecting a product; and an existing expensive environmental module method or other methods or devices which are not easy to use is replaced.
Description
Technical field
The invention belongs to detection range gas sampling method and instrument, relate to the organic volatile method of sampling and gatherer in a kind of product/sample, be primarily aimed at the collection of volatile contaminant.
Background technology
The volatility of product/sample is polluted and is day by day paid attention to by people.The product of newly buying is no matter be that furniture, wood-based plate or carpet, its volatility of wallpaper are polluted and received people's extensive concern.For toxicity and the content that detects its volatile matter, country drops into big physical resources and financial resources and carries out scientific research, but along with product emerges in an endless stream, the characteristic of new product is different, and the drawback of present detection method appears gradually.
At present in the product volatile contaminant detection method; Mostly adopt the method that afterwards detects of gathering earlier, such as the collection employing of furniture burst size of methanal be " 9-11L exsiccator " method, with each position average sample of whole furniture; Saw is processed 10 of the big or small test specimens of 150mm*50mm; Put into the 9-11L exsiccator behind the inside back cover limit, collected formaldehyde 24 hours with 300mL distilled water, the solution concentration behind the formaldehyde is collected in detection.Environmental experiment cabin method is that furniture integral body is put into environmental test chamber, the laggard promoting the circulation of qi sampler body of balance under the environment of uniform temperature, humidity, gas velocity, and the concentration of formaldehyde or VOC is judged the release conditions of furniture in the analytical gas.Except that family product, the volatile contaminant of products such as automotive upholstery, wood-based plate also is to adopt the environmental test chamber method to detect at present.But the environmental test chamber method is owing to need not destroy the advantage of product/sample analog equipment/sample normal operating condition; So present many products all adopt the environmental test chamber method such as: new wooden furniture standard, part software furniture such as carpet etc., yet environmental experiment cabin method are owing to have relatively high expectations to the cabin body; Need cost an arm and a leg; Shortcomings such as energy consumption is high, and it is high to detect cost, and sense cycle is long still can't overcome.
Summary of the invention
The present invention provides the organic volatile method of sampling and gatherer in low, the easy-operating product/sample of a kind of cost in order to remedy the deficiency of prior art.
The present invention realizes through following technical scheme:
Organic volatile compound sample collection device in product/sample of the present invention; It is characterized in that: comprise that inside is used to place the sampler bag of product/sample; Also comprise vacuum pump, gas cylinder and the constant current sampling thief that can be connected with sampler bag; And being used to control gas meter or the control device that charges into gas volume in the sampler bag, sampler bag is provided with the inlet that is used to put into product/sample, also is provided with to be used to connect the taking out of gas cylinder and vacuum pump, air intake opening and to be used to be connected the thief hatch of sampling thief of flowing over.
When adopting control automatically, adopt control device, control device connects vacuum pump, gas cylinder, constant current sampling thief and sampler bag, built-in air flow sensor of control device and CS.
When adopting manually control, adopt gas meter, sampler bag is connected gas cylinder through connecting pipe with three-way pipe, and gas meter is installed in the exit of gas cylinder, another of three-way pipe mouthful connection vacuum pump or constant current sampling thief.Connect vacuum pump when bleeding, connect the constant current sampling thief during sampling.Vacuum pump and gas cylinder are respectively equipped with valve.
Described sampler bag by aluminium foil compound or PP, PE material process, the porch that is used for putting into product/sample can adopt a certain mode of mode of slide fastener, buckle, heat-sealing or folding clamping to seal.
Described sampler bag be shaped as rectangular parallelepiped, square, quadrilateral or polygon, size is corresponding with product/sample.
Take out, air intake opening, thief hatch, be used to put into the inlet and the connecting pipe of product/sample, adopt the low material that discharges or do not have release of teflon, stainless steel, silicon rubber, high-quality polyurethanes to process.
Adorn pure air or nitrogen in the described gas cylinder.
The organic volatile method of sampling in a kind of product/sample; It is characterized in that: under the certain environment temperature, product/sample that needs detect is put into sampler bag, vacuumize; Charge into the pure air or the nitrogen of certain volume again; Balance is gathered air sample after a period of time, thereby judges the release conditions of pollutant.
The invention has the beneficial effects as follows; Cost is low, easy to operate, through this method and gatherer, can under the situation of not destroying product/sample, carry out the volatile contaminant sampling to entire product/sample; It is low to have cost; Be prone to realize, can be used as a kind of method of sampling or harvester of novel testing product, substitute environmental experiment cabin method or other the not wield method or the device of existing costliness.
Description of drawings
Structural representation when Fig. 1 samples for the present invention automatically.Structural representation when Fig. 2 manually samples for the present invention.
Among the figure, 1 product/sample, 2 sampler bags, 3 connecting pipes, 4 control device, 5 constant current sampling thiefs, 6 vacuum pumps, 7 gas cylinders, 8 gas meters, 9 three-way pipes.
Embodiment
1, as shown in Figure 1 sampling thief is by forming with the lower part:
Organic volatile sample collection device in product/sample of the present invention; Comprise that inside is used to place the sampler bag 2 of product/sample 1; Also comprise vacuum pump 6, gas cylinder 7 and the constant current sampling thief 5 that can be connected with sampler bag; And being used to control the control device 4 that charges into gas volume in the sampler bag, sampler bag is provided with the inlet that is used to put into product/sample, also is provided with to be used to connect the taking out of gas cylinder and vacuum pump, air intake opening and to be used to be connected the thief hatch of sampling thief of flowing over.
When adopting control automatically, adopt in the control device control sampler bag and charge into gas volume, control device connects vacuum pump, gas cylinder, constant current sampling thief and sampler bag, and the built-in air flow sensor of control device, connecting pipe and CS are formed.
Sampler bag is provided with and takes out, air intake opening and thief hatch; Take out, air intake opening, this mouthful can be designed to one, two or three, connects vacuum pump and gas cylinder through connecting pipe; Vacuum pump and gas cylinder are respectively equipped with valve, can be thus mouthful quantitatively take out, operation thief hatchs such as air inlet, sampling connect the constant current sampling thief.Sampler bag leaves the inlet of putting into product/sample, a certain mode sealed composite bag of the available buckle of this mouthful, slide fastener, heat-sealing or folding clamping.Connecting pipe adopts the material that does not discharge or hang down release to process.Take out, air intake opening, thief hatch, be used to put into the inlet and the connecting pipe of product/sample, adopt the low material that discharges or do not have release of teflon, stainless steel, silicon rubber, high-quality polyurethanes to process.Sampler bag by aluminium foil compound or PP, PE material process.Sampler bag be shaped as rectangular parallelepiped, square, quadrilateral or polygon, size is corresponding with product/sample.
Gas cylinder: interior dress pure air or nitrogen etc.
The constant current sampling thief: stability of flow, when with packed column adjustments of gas flow velocity and when adopting one-level soap film flowmeter calibrated fluxes, error was less than 5% before and after flow should satisfy.
Control device is made up of gas flow sensor, connecting pipe and CS etc., at first regulates the control quick closing valve to the sampler bag operation of bleeding; Regulation control switch pours the volume number of gas in the sampler bag to aerification function through gas flow sensor control then.
Coupling arrangement: i.e. connecting pipe or tracheae, be used to connect gas cylinder with airbag or airbag with the constant current sampling thief.Can select for use metal tube, polyfluortetraethylene pipe or high-quality polyurethanes not to have the material pipe of release according to actual conditions.
2, collecting flowchart
(1) the testing environment temperature is controlled under a certain temperature in the 15-75 ℃ of scope, can in the room of thermostatic constant wet chamber with enough accuracy and scope or air-conditioning, carry out.
(2) with product/sample, sampler bag, gas cylinder above-mentioned environment held 1 hour-28 days, the concrete time can be provided with as required.
(3) product/sample is put into sampler bag, and sealing, follow gas cylinder to receive in vacuum pump and be drawn into gas port.The open vacuum pump; When the vacuum tightness in the sampler bag reaches required value; Close vacuum pump, charge into pure air or nitrogen through gas cylinder then, after reaching the setting gas volume, stop inflation automatically and (can repeat to vacuumize; To guarantee cleaning gas in the bag), product/sample 1 hour-28 days (the concrete time is provided with as required) back CSs of balance in sampler bag forward on the constant current sampling thief.Open the constant current sampling thief and sample, sampling gained gas is gathered the volatile organic matter in the gas with adsorption tube absorption.
(4) calculating of pollutant; Should load-carry duty be counted (ratio of the ratio of product/surface area of sample and the volume of complex pocket or product/sample volume and complex pocket volume, product/sample can adopt sciagraphy to carry out the surface area of counting yield/sample with reference to relevant criterion when too complicated).
Should detect the background concentration of blank sampler bag when (5) detecting simultaneously.Acquisition method is identical with built-in product/sample collecting method.
1, as shown in Figure 1 sampling thief is by forming with the lower part:
Organic volatile sample collection device in product/sample of the present invention comprises that inside is used to place the sampler bag 2 of product/sample 1, also comprises vacuum pump 6, gas cylinder 7 and the constant current sampling thief 5 that can be connected with sampler bag, connecting pipe 3,
Three-way pipe 9 , and being used to detect the gas meter 8 that charges into gas volume in the sampler bag, sampler bag is provided with the inlet that is used to put into product/sample, also is provided with to be used to connect the taking out of gas cylinder and vacuum pump, air intake opening and the thief hatch that is used to be connected the constant current sampling thief.
When adopting manually control, adopt gas meter, sampler bag is connected gas cylinder through connecting pipe 3 with three-way pipe 4, and gas meter 8 is installed in the exit of gas cylinder, another of three-way pipe mouthful connection vacuum pump 6 or constant current sampling thief 5.Connect vacuum pump when bleeding, connect the constant current sampling thief during sampling.
Sampler bag is provided with and takes out, air intake opening and thief hatch; Take out, air intake opening, this mouthful can be designed to one, two or three, connects vacuum pump and gas cylinder through connecting pipe; Vacuum pump and gas cylinder are respectively equipped with valve, can be thus mouthful quantitatively take out, operation thief hatchs such as air inlet, sampling connect the constant current sampling thief.Sampler bag leaves the inlet of putting into product/sample, a certain mode sealed composite bag of the available buckle of this mouthful, slide fastener, heat-sealing or folding clamping.Connecting pipe adopts the material that does not discharge or hang down release to process.Take out, air intake opening, thief hatch, be used to put into the inlet and the connecting pipe of product/sample, adopt the low material that discharges or do not have release of teflon, stainless steel, silicon rubber, high-quality polyurethanes to process.Sampler bag by aluminium foil compound or PP, PE material process.Sampler bag be shaped as rectangular parallelepiped, square, quadrilateral or polygon, size is corresponding with product/sample.
Gas cylinder: in adorn pure air or nitrogen.
The constant current sampling thief: stability of flow, when with packed column adjustments of gas flow velocity and when adopting one-level soap film flowmeter calibrated fluxes, error was less than 5% before and after flow should satisfy.
Coupling arrangement: i.e. tracheae, be used to connect gas cylinder with airbag or airbag with the constant current sampling thief.Can select for use metal tube, polyfluortetraethylene pipe or high-quality polyurethanes not to have the pipe that discharges material.
2, collecting flowchart
Sample/product is put into sampler bag; And sealing; Vacuum pump is linked in the threeway with the taking out of gas cylinder, sampler bag, air intake opening, when the vacuum tightness in the sampler bag reaches required value, closes vacuum pump; Charge into the clean gas of certain volume then through gas cylinder, (can repeat to vacuumize) to guarantee the cleaning of gas in the sampler bag.After charging into gas,, the constant current sampling thief is received (position that replaces vacuum pump or gas cylinder) in the threeway with product/sample balance 1 hour-28 days (the concrete time is provided with as required) in sampler bag.Open the constant current sampling thief and sample, sampling gained gas is gathered the volatile organic matter in the gas with adsorption tube absorption.
(4) calculating of pollutant; Should load-carry duty be counted (ratio of the ratio of product/surface area of sample and the volume of complex pocket or product/sample volume and complex pocket volume, product/sample can adopt sciagraphy to carry out the surface area of counting yield/sample with reference to relevant criterion when too complicated).
(5) should at first detect the background concentration of blank sampler bag before detecting.Acquisition method is identical with built-in product/sample collecting method.
Claims (8)
1. the gatherer of organic volatile compound in the product/sample; It is characterized in that: comprise that inside is used to place the sampler bag of product/sample; Also comprise vacuum pump, gas cylinder, the constant current sampling thief that can be connected with sampler bag; And being used to control gas meter or the control device that charges into gas volume in the sampler bag, sampler bag is provided with the inlet that is used to put into product/sample, also is provided with to be used to connect the taking out of gas cylinder and vacuum pump, air intake opening and the thief hatch that is used to be connected the constant current sampling thief.
2. the gatherer of organic volatile compound in product/sample according to claim 1; It is characterized in that: when adopting control automatically; Adopt control device; Control device connects vacuum pump, gas cylinder, constant current sampling thief and sampler bag, built-in air flow sensor of control device and CS.
3. the gatherer of organic volatile compound in product/sample according to claim 1; It is characterized in that: when adopting manually control; Adopt gas meter; Sampler bag is connected gas cylinder through connecting pipe with three-way pipe, and gas meter is installed in the exit of gas cylinder, another of three-way pipe mouthful connection vacuum pump or constant current sampling thief.
4. according to the gatherer of organic volatile compound in claim 2 or the 3 described product/samples, it is characterized in that: sampler bag is processed by foil laminated film or PP, PE; The porch that is used to put into product/sample adopts the mode of slide fastener, buckle or heat-sealing to seal.
5. according to the gatherer of organic volatile compound in claim 2 or the 3 described product/samples, it is characterized in that: sampler bag be shaped as rectangular parallelepiped, square, quadrilateral or polygon.
6. according to the gatherer of organic volatile compound in claim 2 or the 3 described product/samples; It is characterized in that: take out, air intake opening, thief hatch, be used to put into the inlet and the connecting pipe of product/sample, adopt the low material that discharges or do not have release of teflon, stainless steel, silicon rubber, high-quality polyurethanes to process.
7. according to the gatherer of organic volatile compound in claim 2 or the 3 described product/samples, it is characterized in that: adorn pure air or nitrogen in the gas cylinder.
8. the method for sampling of organic volatile compound in the product/sample; It is characterized in that: under the certain environment temperature, product/sample that needs detect is put into sampler bag, vacuumize; Charge into the pure air or the nitrogen of certain volume again; Balance is gathered air sample after a period of time, thereby judges the release conditions of pollutant.
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| CN201210280888XA CN102798555A (en) | 2012-08-09 | 2012-08-09 | Method for sampling organic volatile compound in product/sample and collector |
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| CN201210280888XA CN102798555A (en) | 2012-08-09 | 2012-08-09 | Method for sampling organic volatile compound in product/sample and collector |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104181015A (en) * | 2014-08-22 | 2014-12-03 | 上海延锋江森座椅有限公司 | Novel automatic sampling system used in bag method |
| CN104215477A (en) * | 2014-09-09 | 2014-12-17 | 上海交通大学 | Collection device for volatile organic compounds from crushing and thermal pretreatment of electronic waste |
| CN106198130A (en) * | 2016-08-19 | 2016-12-07 | 安徽安利材料科技股份有限公司 | VOC volatilization sampling apparatus and the method for sampling in a kind of synthetic leather |
| CN106526080A (en) * | 2016-11-04 | 2017-03-22 | 上海朗绿建筑科技股份有限公司 | Collection and odor evaluation methods for building interior decoration materials |
| CN107677520A (en) * | 2017-11-21 | 2018-02-09 | 中国石油大学(北京) | A kind of natural gas sample collecting apparatus and acquisition method |
| CN107703089A (en) * | 2017-09-28 | 2018-02-16 | 陈林梭 | A kind of titanium tetrachloride infrared spectrograph sample detection means |
| CN108344820A (en) * | 2018-03-07 | 2018-07-31 | 苏州艾驰博特检测科技有限公司 | A kind of detection method of down toy organic volatile |
| CN109709245A (en) * | 2019-01-25 | 2019-05-03 | 苏州华杨赛斯真空设备有限公司 | Model catalytic reaction products sample sampling system and its sampling sample injection method |
| CN109708928A (en) * | 2019-02-20 | 2019-05-03 | 中国科学院大气物理研究所 | Bulk sample gas acquisition device for atmospheric aerosol measurement |
| CN110702474A (en) * | 2019-10-24 | 2020-01-17 | 中国兵器工业第五九研究所 | Closed storage slow-release micro-atmosphere collection method |
| CN112034125A (en) * | 2020-08-28 | 2020-12-04 | 上海应用技术大学 | Method for measuring discharge amount of volatile organic compounds in sewage tank |
| CN112816267A (en) * | 2021-01-26 | 2021-05-18 | 北京工业大学 | Collection and measuring device for anaerobic stabilization sludge release VSCs gas |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104181015B (en) * | 2014-08-22 | 2016-06-29 | 上海延锋江森座椅有限公司 | A kind of novel sack method adopts system automatically |
| CN104181015A (en) * | 2014-08-22 | 2014-12-03 | 上海延锋江森座椅有限公司 | Novel automatic sampling system used in bag method |
| CN104215477A (en) * | 2014-09-09 | 2014-12-17 | 上海交通大学 | Collection device for volatile organic compounds from crushing and thermal pretreatment of electronic waste |
| CN104215477B (en) * | 2014-09-09 | 2016-07-06 | 上海交通大学 | Electron wastes crushes and the harvester of volatile organic matter in Grape berry |
| CN106198130A (en) * | 2016-08-19 | 2016-12-07 | 安徽安利材料科技股份有限公司 | VOC volatilization sampling apparatus and the method for sampling in a kind of synthetic leather |
| CN106526080A (en) * | 2016-11-04 | 2017-03-22 | 上海朗绿建筑科技股份有限公司 | Collection and odor evaluation methods for building interior decoration materials |
| CN107703089A (en) * | 2017-09-28 | 2018-02-16 | 陈林梭 | A kind of titanium tetrachloride infrared spectrograph sample detection means |
| CN107677520B (en) * | 2017-11-21 | 2023-10-20 | 中国石油大学(北京) | Natural gas sample collection device and collection method |
| CN107677520A (en) * | 2017-11-21 | 2018-02-09 | 中国石油大学(北京) | A kind of natural gas sample collecting apparatus and acquisition method |
| CN108344820A (en) * | 2018-03-07 | 2018-07-31 | 苏州艾驰博特检测科技有限公司 | A kind of detection method of down toy organic volatile |
| CN109709245A (en) * | 2019-01-25 | 2019-05-03 | 苏州华杨赛斯真空设备有限公司 | Model catalytic reaction products sample sampling system and its sampling sample injection method |
| CN109708928A (en) * | 2019-02-20 | 2019-05-03 | 中国科学院大气物理研究所 | Bulk sample gas acquisition device for atmospheric aerosol measurement |
| CN109708928B (en) * | 2019-02-20 | 2023-11-24 | 中国科学院大气物理研究所 | Full-sample gas collecting device for atmospheric aerosol measurement |
| CN110702474A (en) * | 2019-10-24 | 2020-01-17 | 中国兵器工业第五九研究所 | Closed storage slow-release micro-atmosphere collection method |
| CN110702474B (en) * | 2019-10-24 | 2022-08-05 | 中国兵器工业第五九研究所 | Closed storage slow-release micro-atmosphere collection method |
| CN112034125A (en) * | 2020-08-28 | 2020-12-04 | 上海应用技术大学 | Method for measuring discharge amount of volatile organic compounds in sewage tank |
| CN112816267A (en) * | 2021-01-26 | 2021-05-18 | 北京工业大学 | Collection and measuring device for anaerobic stabilization sludge release VSCs gas |
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Application publication date: 20121128 |