Capillary chromatography detection process of mixed benzene

A capillary chromatography and capillary column technology, applied in measuring devices, instruments, scientific instruments, etc., can solve problems such as affecting accuracy and peak shape, difficulty in chromatographic analysis, and unsatisfactory separation, and achieve high accuracy, simple and fast operation. , the effect of great guiding significance
CN101793876AActive Publication Date: 2010-08-04JIANGSU LONGCHANG CHEM
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
JIANGSU LONGCHANG CHEM
Publication Date
2010-08-04

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Abstract

The invention discloses a capillary chromatography detection process of mixed benzene. The mixed benzene mainly comprises chlorobenzene, paradichlorobenzene, meta-dichlorobenzene, ortho-dichlorobenzene and little trichlorobenzene. The mixed benzene is placed into a gas chromatograph to be detected with a capillary column, and finally the detection result is obtained from the standard deviation value through multiple detection comparison. The invention is characterized in that the capillary column for detection is the cross linked SE-54 high efficiency capillary column, and in the experiment, specific conditions are designed for the capillary column, thus the chlorobenzene, paradichlorobenzene, meta dichlorobenzene, ortho-dichlorobenzene and little trichlorobenzene with similar structures and close boiling points can be effectively detected. The method has the characteristics of simple and rapid operation, high degree of accuracy and high precision and has certain instructive significance to process production.
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Description

technical field

[0001] The invention relates to a mixed benzene capillary chromatographic detection process, in particular to a mixed benzene capillary chromatographic detection process with simple and quick operation, high accuracy and high precision. Background technique

[0002] The main components of mixed benzene include chlorobenzene, p-dichlorobenzene, m-dichlorobenzene and o-dichlorobenzene, and a small amount of trichlorobenzene. Dichlorobenzene isomers p-dichlorobenzene, m-dichlorobenzene, and o-dichlorobenzene are intermediates of dyes, pesticides, and medicines, and are also important organic solvents and anti-moth and anti-mold agents. Due to similar structures and similar boiling points, there are certain difficulties in chromatographic analysis. At present, there are many methods for analyzing dichlorobenzene isomers by gas chromatography, such as: organosilicon bentonite packed column analysis, which is not ideal for the separation of trace m-dichlorobenzene...

Claims

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