Determination of hexaconazole in surface water samples from river and the sea by liquid chromatography-electrospray tandem mass spectrometry.
A simple and selective method was developed for determining the concentration of hexaconazole in river and sea water samples by using liquid chromatography/tandem mass spectrometry with an electrospray ionization interface in the positive ion mode and selective reaction monitoring mode. Trace amounts of hexaconazole were collected in a Sep-Pak Plus tC18 cartridge that was eluted with methanol. The detection limit for hexaconazole was 6 ng/l. The recovery of a standard aqueous solution containing 1 microg/l was 96%. The recovery of hexaconazole in the river and sea water samples was 95% and 90%, respectively. Hexaconazole was not detected in the sea water samples. Trace peaks of hexaconazole were found in the river water samples, the concentration being less than 6 ng/l in all cases. The biological degradation of hexaconazole was tested by using river water. No degradation of hexaconazole was apparent in river water incubated at 20 degrees C for 3 weeks.
Tsukatani
Hiroko
H
Fukuoka Institute of Health and Environmental Sciences, Dazaifu, Fukuoka, Japan. tsukatani@fihes.pref.fukuoka.jp
Tobiishi
Kazuhiro
K
Tanaka
Yoshito
Y
Sakuragi
Kenji
K
Ikeura
Tasoh
T
Nakamura
Matayoshi
M
D001673:Biodegradation, Environmental; D002853:Chromatography, Liquid / Q000379:methods; D005618:Fresh Water / Q000032:analysis; D012623:Seawater / Q000032:analysis; D012680:Sensitivity and Specificity; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods; D013499:Surface Properties; D014230:Triazoles / Q000032:analysis*; D014867:Water / Q000032:analysis*
D014230:Triazoles; D014867:Water; C409722:hexaconazole