Mixed-mode solid-phase extraction and cleanup procedures for the liquid chromatographic determination of thiabendazole and carbendazim in fruit juices.
Solid-phase extraction (SPE) procedures were developed for rapid cleanup and determination of thiabendazole and carbendazim in orange, apple, and grape juices. Samples were prepared by using an SPE cartridge containing a mixed-mode sorbent with both reversed-phase and strong cation-exchange chemistries. Analysis was by liquid chromatography with photodiode-array UV detection. Orange juice was analyzed by mixed-mode cation-exchange extraction with reversed-phase cleanup; the other juices were analyzed by reversed-phase extraction with cation-exchange cleanup. Recoveries >80% for carbendazim and >90% for thiabendazole. Quantitation limits were 20 microg/L for both analytes.
Young
M S
MS
Waters Corp, Milford, MA 01757, USA.
Phillips
D J
DJ
Iraneta
P C
PC
Krol
J
J
D001562:Benzimidazoles / Q000032:analysis*; D001628:Beverages / Q000032:analysis*; D002219:Carbamates; D002853:Chromatography, Liquid; D002957:Citrus / Q000737:chemistry; D005638:Fruit / Q000737:chemistry*; D005659:Fungicides, Industrial / Q000032:analysis*; D019685:Rosales / Q000737:chemistry; D013827:Thiabendazole / Q000032:analysis*
D001562:Benzimidazoles; D002219:Carbamates; D005659:Fungicides, Industrial; C006698:carbendazim; D013827:Thiabendazole