A gas chromatography detection system and method for analyzing trace sulfur-containing compounds in gas
A detection system, gas chromatography technology, applied in the direction of analysis of materials, measuring devices, material separation, etc., can solve the problems of reduced service life, inaccurate results, long time, etc., to reduce residence time, shorten analysis time, and high reliability Effect
Active Publication Date: 2016-01-13
辽宁科瑞色谱技术有限公司
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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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Embodiment 1
[0032] A gas chromatography detection system for analyzing trace sulfur compounds in gas, the gas chromatography detection system comprises a ten-port valve 1, a six-port valve 2, a quantitative loop I3, a quantitative loop II4, hydrogen sulfide, carbonyl sulfide, hydrogen sulfide removal and Total sulfur analysis other than carbonyl sulfide gas chromatography column I5, gas-liquid chromatography column II6, flame photometric detector I7, flame photometric detector II8, the interface I1.1 of the ten-port valve 1 is the injection hole, the ten-port The interface II1.2 of the valve 1 is a vent hole, the interface III1.3 of the ten-way valve 1 is connected to the interface VI1.6 of the ten-way valve 1 through the quantitative loop I3, and the interface IV1.4 of the ten-way valve 1 is connected to the The nitrogen pipeline I is connected, the interface V1.5 of the ten-way valve 1 is connected to the interface V2.5 of the six-way valve 2, and the interface VII1.7 of the ten-way valv...
Embodiment 2
[0038] A method for analyzing trace sulfur-containing compounds in gas using the gas chromatography detection system described in Embodiment 1, the method comprising the steps of:
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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-containing compounds in gas, and belongs 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 organosulfurs (carbonyl sulfide, CS 2 , mercaptans, thioethers and thiophenes), among which hydrogen sulfide, SO 2 , SF 6 , carbonyl sulfide, CS 2 and mercaptans. The indicators of sulfur-containing compounds must be controlled in work and living places. The sulfur-containing compounds in chemical synthesis will poison the catalyst. The sulfur-containing compounds in the gas are the main cause of material corrosion. is very important in life. [0003] In addition, the content of sulfur-containing compounds in food-grade carbon dioxide is an important indicator, and sulfur-containing compounds not only affect the taste of bevera...
Claims
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IPC IPC(8): G01N30/02
Inventor 周小平关文顺
Owner 辽宁科瑞色谱技术有限公司