title: Determination of hexaconazole in surface water samples from river and the sea by liquid chromatography-electrospray tandem mass spectrometry.
abstract: 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.
authors.affiliation: Fukuoka Institute of Health and Environmental Sciences, Dazaifu, Fukuoka, Japan. tsukatani@fihes.pref.fukuoka.jp
authors.forename: Hiroko
authors.initials: H
authors.lastname: Tsukatani
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Tobiishi
authors.forename: Yoshito
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Kenji
authors.initials: K
authors.lastname: Sakuragi
authors.forename: Tasoh
authors.initials: T
authors.lastname: Ikeura
authors.forename: Matayoshi
authors.initials: M
authors.lastname: Nakamura
mesh_terms: 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*
chemical_list: D014230:Triazoles; D014867:Water; C409722:hexaconazole