Rapid Analysis of PCB in Insulating Oil by Gas Chromatography/Negative Ion Chemical Ionization Mass Spectrometer
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概要
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In order to achieve the rapid analysis of PCB in insulating oil, optimization of the operating conditions of the GC-MS/NCI method, including ion source temperature, emission current, reaction gas and gas volume estimation, was carried out.<BR>Only a dilution with n-hexane was enough in our pre-treatment process, instead of the complicated pre-treatment such as clean-up processes with column chromatography, the extraction/concentration process, etc., to analyze the samples with a level down to 0.3 mg/kg-PCB, which was less than 0.5 mg/kg-PCB, the pre-treatment criteria in the relevant Japanese law.<BR>The correlation between our method and the official one was fairly good in terms of the test results using the samples of insulating oil containing PCB after de-chlorination treatnent.<BR>In conclusion, we could develop the rapid PCB analysis method by using a GC-MS/NCI method.<BR>The time for analysis could be reduced to less than 1 hour, and the virtually no wastes were produced during pretreatment procedure.<BR>The method is suitable for routine monitoring of PCB during operation of PCB treatment plants.
- 日本環境化学会の論文
日本環境化学会 | 論文
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