Development of a high-sensitivity quantitative analytical method for determining polycarbamate by gas chromatography-mass spectrometry incorporating temperature-programmable inlet on-column injection
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- 作者：Kawamoto ; Tatsuhiko ; Yano ; Miho ; Makihata ; Nobuko
- 关键词：Polycarbamate in tap water ; Methyl dimethyldithiocarbamate ; Dimethyl ethylenebisdithiocarbamate ; Temperature-programmable inlet on-column GC/MS
- 刊名：Journal of Chromatography A
- 出版年：2005
- 出版时间：May 13, 2005
- 年：2005
- 卷：1074
- 期：1-2
- 页码：155-161
- 全文大小：159 K
文摘
A highly sensitive analytical method was developed using GC/MS with temperature-programmable inlet on-column injection (TPI on-column GC/MS) for determining methyl dimethyldithiocarbamate (DMDC-methyl) and dimethyl ethylenebisdithiocarbamate (EBDC-dimethyl), which are methyl derivatives of alkali decomposed polycarbamate. This method makes it possible to quantify 0.3 μg/l of polycarbamate in tap water, which is a 1/100 of the residual target value of 30 μg/l in Japan. Moreover, it now becomes possible to distinguish polycarbamate from other dithiocarbamate pesticides (DTCs) that have similar structures, including ziram and thiram, which only incorporate a DMDC side chain, or manzeb, maneb and zineb, which only incorporate an EBDC side chain, by simultaneously analyzing for DMDC-methyl and EBDC-dimethyl.