Air sampling tube for collecting chlorobenzene compounds
An air sampling and compound technology, which is applied in sampling, sampling device, measuring device, etc., can solve the problems of high sampling and detection cost and low work efficiency, and achieve the effect of reducing detection cost, improving work efficiency and improving detection efficiency.
Inactive Publication Date: 2020-02-11
广东省职业病防治院
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Problems solved by technology
Some of these 12 kinds of chlorobenzene compounds exist in the vapor state in the air, but there is no air sampling tube that can simultaneously collect the 12 kinds of chlorobenzene compounds in the air in the vapor state. When different types of chlorobenzene compounds coexist, or when it is necessary to collect different types of chlorobenzene compounds, it is necessary to use a variety of sampling tubes for sampling, which leads to high sampling and detection costs and low work efficiency
Method used
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Embodiment Construction
[0023] Embodiments of the present invention are described in detail below in conjunction with accompanying drawings:
[0024] Such as Figure 1 to Figure 3 Shown, a kind of air sampling tube that collects chlorobenzene compound, comprise sampling tube and the solid adsorbent that is filled in described sampling tube, solid adsorbent is mixed by weight ratio 1:1 by active carbon and ion exchange resin XAD-2 into or activated carbon impregnated with 10g / L sodium hydroxide solution.
[0025] The solid adsorbent made by mixing activated carbon and ion exchange resin XAD-2 in a weight ratio of 1:1 (or impregnating activated carbon with 10g / L sodium hydroxide solution) can effectively adsorb 12 kinds of vapor state chlorobenzene compounds, The sampling efficiency of 12 kinds of chlorobenzene compounds were all greater than 99% when the flow rate of 1.0L / min was used for long time (8h) sampling.
[0026] The air sampling tube also includes a filter material 80 that can collect aero...
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The invention relates to an air sampling tube for collecting chlorobenzene compounds. The air sampling tube comprises a sampling tube body and a solid adsorbent fill the sampling tube body. The solidadsorbent is formed by mixing activated carbon and ion exchange resin XAD-2 according to a weight ratio of 1 to 1 or is activated carbon impregnated with a 10g / L of sodium hydroxide solution. The solid adsorbent that is prepared by mixing the active carbon and ion exchange resin XAD-2 in a weight ratio of 1 to 1 or by impregnating activated carbon with a 10g / L of sodium hydroxide solution can effectively adsorb 12 vapor-state chlorobenzene compounds; long-time sampling of generally 8 hours is carried out at a flow of 1.0 L / min; the sampling efficiency of 12 chlorobenzene compounds is higher than 99%. With the air sampling tube capable of collecting 12 vapor-state chlorobenzene compounds in air simultaneously, the working efficiency is improved, and the detection cost is reduced.
Description
technical field [0001] The invention relates to the technical field of environmental monitoring equipment, in particular to an air sampling tube for collecting chlorobenzene compounds. Background technique [0002] Chlorobenzene compounds are a class of monocyclic aromatic compounds with a strong odor that have 1 to 6 chlorine substituents attached to the benzene ring, including chlorobenzene, dichlorobenzene, trichlorobenzene, tetrachlorobenzene, pentachlorobenzene, There are 12 compounds including hexachlorobenzene and its isomers. Some of these 12 kinds of chlorobenzene compounds exist in the vapor state in the air, but there is no air sampling tube that can simultaneously collect the 12 kinds of chlorobenzene compounds in the air in the vapor state. When chlorobenzene compounds coexist, or when it is necessary to collect different types of chlorobenzene compounds, it is necessary to use a variety of sampling tubes for sampling, which leads to high sampling and detection...
Claims
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IPC IPC(8): G01N1/22
CPCG01N1/2273G01N1/2214Y02A50/20
Inventor 吴邦华戎伟丰佘媛媛梁旭蒙瑞波何嘉恒胡嘉雯
Owner 广东省职业病防治院