Rapid simultaneous determination of o-phenylphenol, diphenyl, thiabendazole, imazalil and its major metabolite in citrus fruits by liquid chromatography-mass spectrometry using atmospheric pressure photoionization.
A simple and rapid simultaneous analytical method of four post-harvest fungicides, o-phenylphenol (OPP), diphenyl (DP), thiabendazole (TBZ), imazalil (IMZ) and its major metabolite R14821 (IMZ-M) in citrus fruits was developed. These compounds were extracted under basic conditions with diethyl ether. The organic layer was washed with water and evaporated at moderate pressure adding methanol. These compounds were determined by liquid chromatography-mass spectrometry (LC-MS) using atmospheric pressure photoionization (APPI). The recoveries of the five compounds added to citrus fruits at 1 microg/g ranged from 67 to 100%, with relative standard deviations (R.S.D.) ranging from 2 to 8%. The detection limits (S/N = 3) were 0.01 microg/g and 0.05 microg/g (DP).
Yoshioka
Naoki
N
Hyogo Prefectural Institute of Public Health and Environmental Sciences, 2-1-29, Arata-cho, Hyogo-ku, Kobe 652-0032, Japan. naoki_yoshioka@pref.hyogo.jp
Akiyama
Yumi
Y
Teranishi
Kiyoshi
K
D001274:Atmospheric Pressure; D001713:Biphenyl Compounds / Q000032:analysis*; D007093:Imidazoles / Q000032:analysis*; D013058:Mass Spectrometry / Q000379:methods*; D010777:Photochemistry; D012680:Sensitivity and Specificity; D013827:Thiabendazole / Q000032:analysis*
D001713:Biphenyl Compounds; D007093:Imidazoles; D013827:Thiabendazole; C010574:biphenyl; C017435:enilconazole; C004369:2-phenylphenol