title: [Analysis of disulfoton sulfoxide in chingentsuai by pulsed splitless mass spectrometry using programmed temperature vaporization (PTV) inlet].
abstract: A peak considered to be due to disulfoton sulfoxide as a metabolite of disulfoton was detected in the analysis of the chingentsuai extraction solution of vegetables by GC-FPD. In the analysis by GC/MS for identification, though the retention time and the mass spectrum were the same as those of the standard, the spectrum was different from MS library data. It appeared that decomposition of disulfoton sulfoxide occurred at the inlet. Therefore, we used a programmed temperature vaporization (PTV) inlet in the pulsed splitless mode to achieve a low inlet temperature and high injection pressure. As a result, the expected mass spectrum of disulfoton sulfoxide was obtained. Under this condition, the peak obtained from chingentsuai was identified as disulfoton sulfoxide. Disulfoton sulfoxide was detected from 2 of 25 chingentsuai samples, at concentrations of 0.66 microg/g and 0.14 microg/g.
authors.affiliation: Yokohama City Institute of Health: 1-2-17, Takigashira, Isogo-ku, Yokohama 235-0012, Japan.
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Kyoko
authors.initials: K
authors.lastname: Takahashi
authors.forename: Tadashi
authors.initials: T
authors.lastname: Kirigaya
authors.forename: Shiro
authors.initials: S
authors.lastname: Hosoi
authors.forename: Toshio
authors.initials: T
authors.lastname: Hidaka
authors.forename: Hirosi
authors.initials: H
authors.lastname: Kanda
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Nakazawa
mesh_terms: D004222:Disulfoton / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D007306:Insecticides / Q000032:analysis*; D012451:Safrole / Q000031:analogs & derivatives / Q000032:analysis; D014675:Vegetables / Q000737:chemistry*
chemical_list: D007306:Insecticides; D004222:Disulfoton; D012451:Safrole; C005746:sulfoxide