Anti-oxidation sulfur dioxide ion chromatography detection method

Abstract

The invention belongs to the technical field of detection of sulfur dioxide in workplace air and ambient air, and discloses an anti-oxidation sulfur dioxide ion chromatography detection method. The method comprises the following steps: preparing a triethanolamine aqueous solution with a certain concentration as a sampling absorption solution; absorbing and collecting SO2 in the air of the occupational place by using the absorption solution; and qualitatively and quantitatively analyzing the SO2 by using the absorption solution through ion chromatography. According to the method, the triethanolamine aqueous solution is used as an absorption solution, triethanolamine and SO2 form a stable complex, SO2 can be prevented from being oxidized by air, the complex can resist the high temperature of37 DEG C for 7 days, SO2 non-derivative direct ion chromatographic analysis and detection are achieved, and separation and detection of SO3 in air can be effectively achieved; meanwhile, occupationalhealth and environmental harm of highly toxic substances such as formaldehyde or mercury salt used in an existing national occupational health standard detection method to workers are avoided.

Description

technical field [0001] The invention belongs to the technical field of sulfur dioxide detection in workplace air and ambient air, and in particular relates to an anti-oxidation sulfur dioxide ion chromatography detection method. Background technique [0002] In my country, coal-fired enterprises (such as cement factories, brick factories, vitality power plants, etc.), boilers, automobile exhaust sites, waste incineration, crude oil refining and other industries and workplaces will produce a large amount of sulfur dioxide (SO 2 ). SO 2 Toxic, it can cause tracheal inflammation and loss of appetite. A large number of experimental studies and epidemiological investigations have proved that long-term exposure to SO 2 It can cause human respiratory diseases and even be related to the occurrence of lung cancer. [0003] At present, the detection and analysis of SO in the field of occupational health 2 Common methods at home and abroad are "tetrachloromercuric potassium-pararos...

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Problems solved by technology

[0004] In summary, the existing problems in the prior art are: in the current working environment, SO 2 In the detection method, the absorption liquid uses mercury salt or formaldehyde, which is a toxic and harmful substance, and the absorption liquid needs to be transformed before it can be analyzed; it will bring harm to the occupational health of the staff and the environment

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