CN102778368A - Sampling method and collector for organic volatile matters in product/sample - Google Patents
Sampling method and collector for organic volatile matters in product/sample Download PDFInfo
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- CN102778368A CN102778368A CN2012102808894A CN201210280889A CN102778368A CN 102778368 A CN102778368 A CN 102778368A CN 2012102808894 A CN2012102808894 A CN 2012102808894A CN 201210280889 A CN201210280889 A CN 201210280889A CN 102778368 A CN102778368 A CN 102778368A
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Abstract
The invention relates to a sampling method and collector for organic volatile matters in a product/sample, belonging to a sampling method and an instrument of detection field. The method comprises a sampling bag for containing a product/sample, and also comprises a control device and a constant current sampler; the sampling bag is respectively connected with a vacuum pump, a gas bottle and the constant current sampler through connecting pipes; the vacuum pump, the gas bottle and the constant current sampler are connected with the control device; the sampling bag is provided with an inlet through which the product/sample is put; the sampling bag is internally provided with a thermometer and a pressure sensor; and the pressure sensor is connected with the control device. The method is low in cost and easy to realize, and can be used as a novel sampling method or device for detecting products and can replace an existing expensive environment experiment cabin method or other methods or devices uneasy to use.
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 since need not destroy product/sample analog equipment/sample normal operating condition etc. advantage; 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 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 control device and constant current sampling thief, sampler bag connects vacuum pump, gas cylinder and constant current sampling thief respectively through connecting pipe; Vacuum pump, gas cylinder and constant current sampling thief are connected control device; Sampler bag is provided with the inlet that is used to put into product/sample, and baroceptor is arranged in the sampler bag, and baroceptor connects control device.
Described sampler bag is processed by foil laminated film or PP, PE material, and the porch that is used to put into product/sample is adopted slide fastener, adopted a certain mode of heat-sealing or folding clamping to seal.
Described sampler bag is provided with and takes out, air intake opening and thief hatch, takes out, air intake opening connects vacuum pump and gas cylinder through connecting pipe, and vacuum pump and gas cylinder are respectively equipped with valve, thief hatch connection constant current sampling thief.
Described sampler bag be shaped as rectangular parallelepiped, square, quadrilateral or polygon, size is corresponding with product/sample.
Describedly take out, air intake opening, thief hatch, be used to put into the inlet and the tracheae of product/sample, adopt not discharge or the low material that discharges is processed.
Adorn pure air or nitrogen in the described gas cylinder.
The organic volatile method of sampling in a kind of product/sample is characterized in that: under the certain environment temperature, product/sample that needs detect is put into sampler bag; Vacuumize; Charge into pure air or nitrogen again, after reaching the setting gaseous tension, stop inflation automatically, balance is after a period of time; Gather air sample, thereby judge 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
Fig. 1 is a structural representation of 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.
Embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.
Organic volatile sample collection device in product/sample of the present invention, detailed structure is following:
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 control device and constant current sampling thief 5, sampler bag connects vacuum pump 6, gas cylinder 7 and constant current sampling thief respectively through connecting pipe 3; Vacuum pump, gas cylinder and constant current sampling thief are connected control device 4; Sampler bag is provided with the inlet that is used to put into product/sample, and baroceptor is arranged in the sampler bag, and baroceptor connects control device.
The foil laminated film sampler bag, different according to product/sample, it is shaped as rectangular parallelepiped, square, quadrilateral or polygon, size is corresponding with product/sample).The sealing means of the design of zip mode buckle, hot pressing or folding clamping is adopted in the sealing on limit); Can product/sample integral body be put into; Then sampler bag is sealed; Sampler bag leaves and takes out, air intake opening, thief hatch, and this mouth can be designed to one or more, can be thus mouthful quantitatively takes out, operations such as air inlet, sampling.Take out, air intake opening, thief hatch is used to put into the inlet and the tracheae of product/sample, adopts teflon, stainless steel or the high-quality polyurethanes does not discharge or the low material that discharges is processed 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: can realize control, at first can realize vacuumizing function to the sampler bag operation of bleeding to sampler bag air pressure; Next has aerification function, can realize the control function to sampler bag air pressure, when sampler bag air pressure is too small, can inflate, and when sampler bag air pressure is excessive, can carry out exhaust; Function when being provided with thermometric, control.
Coupling arrangement: i.e. tracheae, be used to connect gas cylinder with airbag or airbag with the constant current sampling thief.Can select the material pipe of metal tube, polyfluortetraethylene pipe or other nothing releases for use 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 is 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 gaseous tension, stop inflation automatically; Monitor gas temperature in the sampler bag this moment, in the whole operation when pressure is excessive blowdown valve begin pressure release automatically, until sampler bag temperature and ambient temperature equilibrium.Product/sample is the bright and warning of 1 hour-28 days (the concrete time is provided with as required) rear indicator lights of balance in sampler bag.The constant current sampling thief is received on the thief hatch.The open vacuum pump is opened the constant current sampling thief and is sampled, and 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 (7)
1. organic volatile sample collection device in the product/sample; It is characterized in that: comprise that inside is used to place the sampler bag of product/sample, also comprise control device and constant current sampling thief, sampler bag connects vacuum pump, gas cylinder and constant current sampling thief respectively through connecting pipe; Vacuum pump, gas cylinder and constant current sampling thief are connected control device; Sampler bag is provided with the inlet that is used to put into product/sample, and baroceptor is arranged in the sampler bag, and baroceptor connects control device.
2. organic volatile sample collection device in product/sample according to claim 1 is characterized in that: sampler bag is processed by foil laminated film or PP, PE, and the porch that is used to put into product/sample is provided with slide fastener.
3. organic volatile sample collection device in product/sample according to claim 1 and 2; It is characterized in that: sampler bag is provided with and takes out, air intake opening and thief hatch; Take out, air intake opening connects vacuum pump and gas cylinder through connecting pipe; Vacuum pump and gas cylinder are respectively equipped with valve, and thief hatch connects the constant current sampling thief.
4. organic volatile sample collection device in product/sample according to claim 3 is characterized in that: sampler bag be shaped as rectangular parallelepiped, square, quadrilateral or polygon.
5. organic volatile sample collection device in product/sample according to claim 3; It is characterized in that: take out, air intake opening, thief hatch, be used to put into the inlet and the tracheae of product/sample, adopt teflon, stainless steel or the high-quality polyurethanes does not discharge or the low material that discharges is processed.
6. organic volatile sample collection device in product/sample according to claim 1 is characterized in that: dress pure air or nitrogen in the gas cylinder.
7. the organic volatile method of sampling in the product/sample is characterized in that: under the certain environment temperature, product/sample that needs detect is put into sampler bag; Vacuumize; Charge into pure air or nitrogen again, after reaching the setting gaseous tension, stop inflation automatically, balance is after a period of time; Gather air sample, thereby judge the release conditions of pollutant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102808894A CN102778368A (en) | 2012-08-09 | 2012-08-09 | Sampling method and collector for organic volatile matters in product/sample |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102808894A CN102778368A (en) | 2012-08-09 | 2012-08-09 | Sampling method and collector for organic volatile matters in product/sample |
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| CN102778368A true CN102778368A (en) | 2012-11-14 |
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| CN2012102808894A Pending CN102778368A (en) | 2012-08-09 | 2012-08-09 | Sampling method and collector for organic volatile matters in product/sample |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245536A (en) * | 2013-04-26 | 2013-08-14 | 杨铁钊 | Device for collecting ammonia volatilized from plant leaf and detection method of device |
| CN103439160A (en) * | 2013-08-22 | 2013-12-11 | 中山大学 | Method for rapidly detecting volatile formaldehyde by surface enhanced Raman scattering (SERS) and application of method |
| CN103698164A (en) * | 2013-12-31 | 2014-04-02 | 宁波高新区环测实验器材有限公司 | VOC (volatile organic compound) gas filling and sampling system |
| CN103756788A (en) * | 2014-01-07 | 2014-04-30 | 仲恺农业工程学院 | Aromatic plant volatile matter collection system |
| CN104316365A (en) * | 2014-11-24 | 2015-01-28 | 北京市环境保护科学研究院 | Device for synchronously collecting VOCs and OVOCs in exhaust gases of catering industry |
| CN104764862A (en) * | 2015-05-05 | 2015-07-08 | 西安近代化学研究所 | Gas concentration site testing method |
| CN105336256A (en) * | 2015-12-08 | 2016-02-17 | 重庆大学 | Sampling box for measuring and simulating nitrogen oxide in laboratory |
| CN105557562A (en) * | 2016-03-01 | 2016-05-11 | 中国医学科学院生物医学工程研究所 | Acquisition device for gas in beehive |
| CN105675357A (en) * | 2016-01-19 | 2016-06-15 | 北京工业大学 | Multipurpose dilution channel solid particle sampling system applicable to sampling VOCs |
| CN106769255A (en) * | 2017-01-09 | 2017-05-31 | 北京科技大学 | A kind of material odor dispersion and detection means and detection method |
| CN108051285A (en) * | 2017-12-15 | 2018-05-18 | 宁波环测实验器材有限公司 | A kind of sack method VOC pretreating devices and its application method |
| CN108896712A (en) * | 2018-06-22 | 2018-11-27 | 广东省医疗器械研究所 | A kind of gel release oxygen test method and detection device |
| CN109060968A (en) * | 2018-08-28 | 2018-12-21 | 济南海纳特科技有限公司 | A kind of plate fitment organic volatile rapid detection method and detection device |
| CN109839247A (en) * | 2019-03-07 | 2019-06-04 | 环境保护部环境工程评估中心 | Bag detection device, leak detection system and method |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245536A (en) * | 2013-04-26 | 2013-08-14 | 杨铁钊 | Device for collecting ammonia volatilized from plant leaf and detection method of device |
| CN103439160A (en) * | 2013-08-22 | 2013-12-11 | 中山大学 | Method for rapidly detecting volatile formaldehyde by surface enhanced Raman scattering (SERS) and application of method |
| CN103439160B (en) * | 2013-08-22 | 2015-10-28 | 中山大学 | Surface enhanced raman spectroscopy detects method and the application thereof of volatile formaldehyde fast |
| CN103698164A (en) * | 2013-12-31 | 2014-04-02 | 宁波高新区环测实验器材有限公司 | VOC (volatile organic compound) gas filling and sampling system |
| CN103698164B (en) * | 2013-12-31 | 2016-09-07 | 宁波环测实验器材有限公司 | VOC fills gas production system |
| CN103756788A (en) * | 2014-01-07 | 2014-04-30 | 仲恺农业工程学院 | Aromatic plant volatile matter collection system |
| CN103756788B (en) * | 2014-01-07 | 2016-03-30 | 仲恺农业工程学院 | Aromatic plant volatile matter collection system |
| CN104316365A (en) * | 2014-11-24 | 2015-01-28 | 北京市环境保护科学研究院 | Device for synchronously collecting VOCs and OVOCs in exhaust gases of catering industry |
| CN104764862B (en) * | 2015-05-05 | 2016-08-17 | 西安近代化学研究所 | A kind of gas concentration on-the-spot test method |
| CN104764862A (en) * | 2015-05-05 | 2015-07-08 | 西安近代化学研究所 | Gas concentration site testing method |
| CN105336256A (en) * | 2015-12-08 | 2016-02-17 | 重庆大学 | Sampling box for measuring and simulating nitrogen oxide in laboratory |
| CN105675357A (en) * | 2016-01-19 | 2016-06-15 | 北京工业大学 | Multipurpose dilution channel solid particle sampling system applicable to sampling VOCs |
| CN105557562A (en) * | 2016-03-01 | 2016-05-11 | 中国医学科学院生物医学工程研究所 | Acquisition device for gas in beehive |
| CN105557562B (en) * | 2016-03-01 | 2018-03-27 | 天津梵谷生物科技股份有限公司 | A kind of harvester for beehive internal gas |
| CN106769255A (en) * | 2017-01-09 | 2017-05-31 | 北京科技大学 | A kind of material odor dispersion and detection means and detection method |
| CN106769255B (en) * | 2017-01-09 | 2023-07-11 | 北京科技大学 | Material odor emission and detection device and detection method |
| CN108051285A (en) * | 2017-12-15 | 2018-05-18 | 宁波环测实验器材有限公司 | A kind of sack method VOC pretreating devices and its application method |
| CN108896712A (en) * | 2018-06-22 | 2018-11-27 | 广东省医疗器械研究所 | A kind of gel release oxygen test method and detection device |
| CN109060968A (en) * | 2018-08-28 | 2018-12-21 | 济南海纳特科技有限公司 | A kind of plate fitment organic volatile rapid detection method and detection device |
| CN109839247A (en) * | 2019-03-07 | 2019-06-04 | 环境保护部环境工程评估中心 | Bag detection device, leak detection system and method |
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Application publication date: 20121114 |