title: Determinations of MC-LR and [Dha(7)] MC-LR concentrations and physicochemical properties by liquid chromatography-tandem mass spectrometry.
abstract: A liquid chromatography electrospray mass spectrometry (LC/ESI/MS) method working in multiple reactions monitoring mode for the determination of trace amounts of microcystin variants (MC-LR and [Dha(7)] MC-LR) in waters was developed. The limit of quantification was 0.05 microg/L and the limit of detection was 0.015 microg/L for MC-LR and [Dha(7)] MC-LR, respectively. Recoveries for MCs were in the range of 68%-81%. MC-LR and [Dha(7)] MC-LR were chemically stable with similar physiochemical behavior.
authors: Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology of China, Institute of Hydrobiology, Chinese Academy of Science, Wuhan 430072, People's Republic of China. fs-6215550@yeah.net
authors: Ting
authors: T
authors: Yu
authors: Ping
authors: P
authors: Xie
authors: Ming
authors: M
authors: Dai
authors: Gaodao
authors: G
authors: Liang
mesh_terms: D002853:Chromatography, Liquid / Q000379:methods*; D008387:Marine Toxins; D052998:Microcystins / Q000032:analysis*; D015203:Reproducibility of Results; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D008387:Marine Toxins; D052998:Microcystins; C057862:cyanoginosin LR