Method for simultaneously detecting a variety of harmful gases in workplace
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A workplace, harmful gas technology, applied in the field of chemical determination, can solve the problems of long time consumption, cumbersome detection operation, low efficiency, etc., and achieve the effects of high accuracy, improved detection efficiency, and high detection efficiency.
Inactive Publication Date: 2018-08-10
广东中汇认证检测有限公司
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[0003] The prior art detects the organic and toxic substances benzene, toluene, acetone, butanone, ethyl acetate, and butyl acetate in the workplace air separately, using different gas chromatography conditions and different sampling methods. The detector is used for detection, and the detection operation is cumbersome, time-consuming and inefficient;
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[0022] The specific embodiment of the present invention is described further below:
[0023] A detection method for simultaneously detecting multiple harmful gases in a workplace, the method adopts the gas chromatography of a hydrogen flame ionization detector (FID), and simultaneously detects benzene, toluene, acetone, butanone, ethyl acetate, and acetic acid in the air of the workplace The content of butyl ester, comprises the following steps:
[0024] S1), use activated carbon tubes to collect the air in the workplace, and store it in a sealed low temperature after collection;
[0025] S2), get the front and rear sections of activated carbon in the activated carbon tube, put them into the analysis bottle respectively, add 1mL carbon disulfide respectively, shake for 1min, desorb for 30min, and the desorption solution is used for determination;
[0026] S3), take the desorption solution in step S2), inject a sample according to the injection volume of 1.0 μL, and perform ch...
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Abstract
The invention relates to a method for simultaneously detecting a variety of harmful gases in a workplace. The method adopts the gas chromatography method of a hydrogen flame ionization detector FID, simultaneously detects the contents of benzene, toluene, acetone, butanone, ethyl acetate and butyl acetate in the air of a workplace, and comprises: collecting the air of a workplace by using an active carbon tube, sealing, carrying out low-temperature storage, taking the front section active carbon and the rear section active carbon in the active carbon tube, respectively placing into an desorption bottle, respectively adding 1 mL of carbon disulfide, shaking for 1 min, desorbing for 30 min, determining the desorption solution, and quantitively analyzing benzene, toluene, acetone, butanone, ethyl acetate and butyl acetate in the air of the workplace by using an external standard method. According to the present invention, the method can simultaneously determine the contents of benzene, toluene, acetone, butanone, ethyl acetate and butyl acetate in the air of the workplace, can further improve the efficiency of the detection for toxic substances in the air of the workplace, can save alot of manpower and material resources, and further has advantages of simple operation, high accuracy and high detection efficiency.
Description
technical field [0001] The invention relates to the technical field of a chemical determination method, in particular to a detection method for simultaneously detecting multiple harmful gases in a workplace. Background technique [0002] With the development of social industrialization, air pollution in the workplace has seriously affected the health of workers, so the detection of toxic substances in the workplace air is particularly important, the general organic toxic substances are mainly benzene, toluene, acetone, methyl ethyl ketone, acetic acid Ethyl acetate, butyl acetate, etc. [0003] The prior art detects the organic and toxic substances benzene, toluene, acetone, butanone, ethyl acetate, and butyl acetate in the workplace air separately, using different gas chromatography conditions and different sampling methods. The detector is used for detection, and the detection operation is cumbersome, time-consuming and inefficient; Contents of the invention [0004] A...
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