title: [Determination of diphenyl and o-phenylphenol in agricultural products by GC/MS].
abstract: A simple determination method of diphenyl (DP) and o-phenylphenol (OPP) in agricultural products by GC/MS was examined. DP and OPP were extracted with ethyl acetate in the presence of anh. sodium sulfate. After addition of n-butanol, the extract solution was concentrated. Clean-up was achieved by shaking with graphitized bulk carbon (Supelclean ENVI-Carb). Addition of polyethylene glycol sharpened the OPP peak on GC/MS analysis. The recoveries from 9 kinds of agricultural products spiked at 0.01 and 0.5 microg/g each were mostly in the range of 70 to 120%, except for 50% recovery of OPP from barley spiked at 0.01 microg/g. The quantification limits (S/N > or =10) of DP and OPP were 0.0013 and 0.005 microg/g (0.0025 and 0.01 microg/g in barley and soybean), respectively.
authors.affiliation: Saitama Institute of Public Health, Saitama 3380824, Japan.
authors.forename: Kunihiko
authors.initials: K
authors.lastname: Takahashi
authors.forename: Masakazu
authors.initials: M
authors.lastname: Horie
authors.forename: Yoshihumi
authors.initials: Y
authors.lastname: Hirose
mesh_terms: D001713:Biphenyl Compounds / Q000032:analysis*; D002849:Chromatography, Gas; D002523:Edible Grain / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry*; D013058:Mass Spectrometry; D014675:Vegetables / Q000737:chemistry*
chemical_list: D001713:Biphenyl Compounds; C010574:biphenyl; C004369:2-phenylphenol