Gas chromatography detection system and gas chromatography detection method for analyzing trace sulfur compounds in gas

Abstract

The invention relates to a gas chromatography detection system and a gas chromatography detection method for analyzing trace sulfur compounds in the gas, which belong to the field of analytic chemistry. The system comprises a ten-way valve, a six-way valve, a quantification ring I, a quantification ring II, a chromatographic column I, a chromatographic column II, a detector I and a detector II, wherein a ten-way valve interface I is a sample feeding hole; a ten-way valve interface II is an air discharging hole; a ten-way valve interface III is connected with a ten-way valve interface VI by virtue of the quantification ring I; a ten-way valve interface IV is connected with a carrier gas pipeline I; a ten-way valve interface V is connected with a six-way valve interface V; a ten-way valve interface VII is connected with a ten-way valve X by virtue of the quantification ring II; a ten-way valve interface VIII is connected with the detector II by virtue of the chromatographic column II; a ten-way valve interface IX is connected with a carrier gas pipeline II; a six-way valve interface I is connected with a six-way valve interface III by virtue of a pipeline; a six-way valve interface II is connected with the detector I; a six-way valve interface IV is connected with a six-way valve interface VI by virtue of the chromatographic column I. The gas chromatography detection system and the gas chromatography detection method for analyzing trace sulfur compounds in gas have the benefits that inorganic sulfur, organic sulfur and total sulfur can be determined by feeding the sample at one time.

Description

technical field [0001] The invention relates to a gas chromatography detection system and method for analyzing trace sulfur compounds in gas, belonging to the field of analytical chemistry. Background technique [0002] The sulfur-containing compounds in the gas are mainly inorganic sulfur (hydrogen sulfide, SO 2 and SF 6 etc.) and organic sulfurs (carbonyl sulfide, CS 2 , mercaptans, thioethers and thiophenes), among which hydrogen sulfide, SO 2 , SF 6 , carbonyl sulfide, CS 2 and mercaptans. Sulfur-containing compound indicators must be controlled in work and living places. Sulfur-containing compounds in chemical synthesis can poison catalysts. Sulfur-containing compounds in gas are the main cause of material corrosion. Sulfur-containing compounds in gas are analyzed in production It is very important in life. [0003] In addition, the content of sulfur compounds in food-grade carbon dioxide is an important indicator. Sulfur compounds not only affect the taste of be...

AI Technical Summary

Problems solved by technology

At present, the determination of total sulfur by gas chromatograph with FPD often adopts two injections and two chromatographic columns to analyze hydrogen sulfide, carbonyl sulfide and organic form sulfur respectively, and to calculate total sulfur by cumulative calculation, which is cumbersome and takes a long time. Sulfur-containing compounds of heavy components are not easy to elute completely, resulting in inaccurate results, contaminating the chromatographic column and reducing its service life

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