Application of ion-exchange cartridge clean-up in food analysis. I. Simultaneous determination of thiabendazole and imazalil in citrus fruit and banana using high-performance liquid chromatography with ultraviolet detection.
A simple, rapid and reproducible analytical method for thiabendazole (TBZ) and imazalil (IMA) in citrus fruit and banana has been developed. The method involves the use of an ion-exchange cartridge for sample clean-up followed by ion-pair high-performance liquid chromatography with ultraviolet detection. The recoveries of TBZ and IMA from citrus fruits spiked at levels of 10 microgram/g and 5 microgram/g were in the range of 94-98% and 93-98% with coefficients of variation of 0.5-2.2% and 1.6-2.7%, respectively. The recoveries of TBZ and IMA from banana spiked at levels of 3 microgram/g and 2 microgram/g were 94% and 94% with coefficients of variation 1.1% and 4.9%, respectively. The detection limits for TBZ and IMA were 0.1 microgram/g in citrus fruit and 0.05 microgram in banana.
Aichi Prefectural Institute of Public Health, Nagoya, Japan.
Y
Y
Ito
Y
Y
Ikai
H
H
Oka
J
J
Hayakawa
T
T
Kagami
D000871:Anthelmintics / Q000032:analysis*; D002138:Calibration; D002851:Chromatography, High Pressure Liquid; D002852:Chromatography, Ion Exchange; D002957:Citrus / Q000737:chemistry*; D005504:Food Analysis; D005659:Fungicides, Industrial / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D007093:Imidazoles / Q000032:analysis*; D007202:Indicators and Reagents; D013056:Spectrophotometry, Ultraviolet; D013827:Thiabendazole / Q000032:analysis*; D019862:Zingiberales / Q000737:chemistry*
D000871:Anthelmintics; D005659:Fungicides, Industrial; D007093:Imidazoles; D007202:Indicators and Reagents; C017435:enilconazole; D013827:Thiabendazole