Investigation and optimization of operating temperature of the dispersion of cyanocarbon) O-Chlorobenzylidene Malononitrile( compound using gas chromatography

Document Type : Original Article


1 Department of Chemistry, Semnan University, P.O. Box 35131-19111, Semnan, Iran.

2 Department of Chemistry, Semnan University, P.O. Box 35131-19111, Semnan, Iran


In this work, in order to investigate and optimize the dispersion temperature of the cyanocarbon compound(O-Chlorobenzylidene Malononitrile or OCBM), three methods of preparation of the sample with solid phase micro extraction, sampling using two-component vacuum traps and temperature scanning in the injection port using the gas chromatography apparatus used are located. The use of the OCBM cyanocarbon compound for testing chemical masks has been tested and tests have shown that in many centers, in order to disperse this compound in test chambers, it is placed in powder form on heaters with temperature high is used. There are assumptions that this dispersal technique at high temperatures may cause material damage, producing toxic substances, or creating unwanted reactions. Therefore, the other objectives of this paper were to analyze the vapors generated by the distribution of the OCBM produced by the cyanocarbon in the country with the above-mentioned method and the answer to the questions posed by these assumptions. For this purpose, preliminary information was obtained from the objective target temperature scan at the chromatography injection port, and then, in order to create the most similarity between the sampling conditions and the operating conditions used in the gas test chambers, the combination was placed on the heater. The mixture is evaporated and sampled using the highest possible temperature. In the final section of the paper, the solid-state micro-extraction method is used as an organic solvent-free preparation method for the extraction and detection of low-concentration compounds produced in the dispersion process.


Main Subjects

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