title: LC-MS analysis of antifouling agent Irgarol 1051 and its decyclopropylated degradation product in seawater from marinas in Hong Kong.
abstract: A method for the trace analysis of antifouling agent Irgarol 1051 and its decyclopropylated degradation product in seawater was developed by using reversed-phase LC-MS with quadrupole time-of-flight mass spectrometry detection. Atrazine-d(5) was used as the internal standard for the LC-MS determination. Irgarol 1051 and the major degradation product were detected at trace levels in seawater samples collected from several marinas in Hong Kong. The water samples were pre-concentrated by solid-phase extraction with a polystyrene-divinylbenzene cartridge. Quadrupole time-of-flight tandem mass spectrometry in positive ion electrospray ionization was used for the identification and quantitation. The recoveries of Irgarol 1051 and degradation product were >85%. Method detection limits were 0.2ngl(-1) and 0.8ngl(-1) for the antifouling agent and the decyclopropylated degradation product, respectively.
authors.affiliation: Department of Chemistry, Hong Kong Baptist University, Hong Kong, China.
authors.forename: Zongwei
authors.initials: Z
authors.lastname: Cai
authors.forename: Yun
authors.initials: Y
authors.lastname: Fun
authors.forename: Wai-Tang
authors.initials: WT
authors.lastname: Ma
authors.forename: Michael Hon-Wah
authors.initials: MH
authors.lastname: Lam
authors.forename: James
authors.initials: J
authors.lastname: Tsui