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http://dx.doi.org/10.5806/AST.2011.24.3.225

Analysis of anatoxin-a in aqueous and cyanobacterial samples from korean lakes by liquid chromatography with fluorescence detection  

Lee, In-Jung (Nakdong River Environment Research Center, National Institute of Envirnonmental Research)
Lee, Chul-Gu (Nakdong River Environment Research Center, National Institute of Envirnonmental Research)
Heo, Seong-Nam (Nakdong River Environment Research Center, National Institute of Envirnonmental Research)
Lee, Jae-Gwan (Nakdong River Environment Research Center, National Institute of Envirnonmental Research)
Publication Information
Analytical Science and Technology / v.24, no.3, 2011 , pp. 225-230 More about this Journal
Abstract
Anatoxin-a is a cyanobacterial neurotoxin with a high toxicity produced by Anabaena, Aphanizomenon and Oscillatoria. Water bloom, formed by Anabaena has been occurring frequently in Lake Yeongchun. It is need to develop a sensitive method for determination of anatoxin-a to control potential hazard in raw water resources. In this study, we developed a highly sensitive analytical method of anatoxin-a using solid phase extraction (SPE) and high performance liquid chromatography (HPLC) with fluorescence detection. Anatoxin-a was converted into a highly fluorescent derivative using 4-fuoro-7-nitro-2,1,3-benzoxadiazole (NBF-F). The method was evaluated in terms of linearity of calibration curve, recovery and repeatability, and the adequate values were obtained. The method detection limit was $0.034\;{\mu}g/g$ and $0.022\;{\mu}g/L$ for algal and water samples, respectively. The concentrations of anatoxin-a were measured in algal and water samples from Lake Andong, Yeongchun and Daechung and ranged from $0.135\;{\mu}g/g$ to $10.979\;{\mu}g/g$ in algal samples and not detected in water samples.
Keywords
anatoxin-a; SPE; HPLC; fluorescence detection;
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