Development of a high-sensitivity quantitative analytical method for determining polycarbamate by gas chromatography-mass spectrometry incorporating temperature-programmable inlet on-column injection

  • Kawamoto T
  • Yano M
  • Makihata N
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Abstract

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. © 2005 Published by Elsevier B.V.

Author-supplied keywords

  • Dimethyl ethylenebisdithiocarbamate
  • Methyl dimethyldithiocarbamate
  • Polycarbamate in tap water
  • Temperature-programmable inlet on-column GC/MS

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Authors

  • Tatsuhiko Kawamoto

  • Miho Yano

  • Nobuko Makihata

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