Determination of carbofuran and its metabolites in rice paddy water by using solid phase extraction and liquid chromatography.
A procedure for the determination of carbofuran and its metabolites (carbamate and phenolic) in rice paddy water is described. Water samples are concentrated on a C-18 solid phase extraction (SPE) column and eluted with methanol-water. The eluate is analyzed by reverse-phase liquid chromatography (LC) and measured by a wavelength programmable ultraviolet (UV) detector. The limit of detection for the method is 0.4 micrograms/L. Recovery studies were carried out at levels ranging from 1 to 15 micrograms/L in both rice paddy water and distilled water; recoveries ranged from 85.9 to 112.9%.
Beauchamp
K W
KW
FMC Corp., Agricultural Chemical Group, Princeton, NJ 08543.
Liu
D D
DD
Kikta
E J
EJ
D002235:Carbofuran / Q000031:analogs & derivatives / Q000032:analysis*; D002853:Chromatography, Liquid; D005618:Fresh Water / Q000032:analysis*; D007202:Indicators and Reagents; D007306:Insecticides / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet; D014867:Water / Q000032:analysis*
D007202:Indicators and Reagents; D007306:Insecticides; D014867:Water; D002235:Carbofuran