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Special gas chromatography column for analysis of benzene compounds in environment

A gas chromatographic column and benzene series technology, applied in the field of environmental analysis, can solve the problems of difficult separation, unable to ensure good reproducibility of multiple batches, etc., and achieve the advantages of short separation time, reduced hardware and time costs, and lower product prices. Effect

Inactive Publication Date: 2013-03-27
SHANGHAI ANPEL SCI INSTR
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Problems solved by technology

[0002] The collection and analysis of benzene, monomethylbenzene and dimethylbenzene in the environment has always been a hot spot in the analysis industry, and the separation of several isomers of dimethylbenzene is particularly difficult, and the separation must be done in time. Existing filling processes cannot guarantee good reproducibility between batches

Method used

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Embodiment Construction

[0014] The manufacturing steps of this embodiment are:

[0015] 1. Preparation of column packing

[0016] Weigh 1-10g of column filler named Benton 34 and dissolve it in 100ml of toluene solvent, weigh 100-150g of column filler white inert diatomaceous earth according to a certain proportion, dissolve it in 100ml of toluene solvent, and stir it well , wait for the toluene to evaporate naturally to dryness, and set aside;

[0017] 2. Passivation treatment of stainless steel empty column tube

[0018] Take a certain length of 1 / 8-inch outer diameter stainless steel empty column tube, purge it with nitrogen gas at a constant flow rate of 30ml / min, add 100ml of acetone and 100ml of deionized water in sequence to clean the inner wall of the column tube, and finally use a constant flow rate of 30ml / min The flow rate is purged to dryness with nitrogen gas, and it is ready for use;

[0019] 3. Column filling

[0020] Take a stainless steel empty tube with a length of 1-5 meters, b...

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Abstract

The invention discloses a special gas chromatography column for analysis of benzene compounds in an environment, and relates to the technical field of environment analysis. Manufacturing steps for the column comprise: (1) preparing a column filler, (2) carrying out a passivation treatment on an empty stainless steel column tube, (3) filling the chromatography column, and (4) purifying the chromatography column. According to the present invention, the column filler with a trade name of Benton 34 is added with white inert diatomite to fill the chromatography column, such that a plurality of substances such as benzene, toluene, ortho-xylene, meta-xylene, and para-xylene can be completely separated, and a separation time is short, wherein the separation can be completed within 15 min; mass production is performed so as to substantially reduce product price, and high stability between production batches is ensured so as to substantially reduce hardware cost and time cost for monitoring and separation of benzene compounds in environment industries.

Description

Technical field: [0001] The invention relates to the technical field of environmental analysis, in particular to a special gas chromatographic column for the analysis of benzene series in the environment. Background technique: [0002] The collection and analysis of benzene, monomethylbenzene and dimethylbenzene in the environment has always been a hotspot in the analysis industry, and the separation of several isomers of dimethylbenzene is particularly difficult. Existing filling processes cannot guarantee good reproducibility between batches. Invention content: [0003] The object of the present invention is to provide a kind of special-purpose gas chromatographic column for the analysis of benzene series in the environment, it is equipped with the column filler of trade name Benton 34, is equipped with white inert diatomite packing chromatographic column again, can benzene, toluene, o-, Between, the complete separation of several substances such as p-xylene, and the se...

Claims

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Application Information

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IPC IPC(8): G01N30/60
Inventor 盛剑玉沈志希马静怡张晓梅方颖
Owner SHANGHAI ANPEL SCI INSTR
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