Citation: LIAN Li-Li, GUO Ting-Xiu, WU Yu-Qing, JIN Li, LOU Da-Wei, SUN Da-Zhi. Determination of Microcystin-LR in Environmental Water by Magnetic Solid Phase Extraction-High Performance Liquid Chromatography[J]. Chinese Journal of Analytical Chemistry, ;2015, 43(12): 1876-1881. doi: 10.11895/j.issn.0253-3820.150567 shu

Determination of Microcystin-LR in Environmental Water by Magnetic Solid Phase Extraction-High Performance Liquid Chromatography

LIAN Li-Li ¹ ,
GUO Ting-Xiu ¹ ,
WU Yu-Qing ² ,
JIN Li ¹ ,
LOU Da-Wei ^1,, ,
SUN Da-Zhi ^1,,

1.
¹ Department of Analytical Chemistry, Jilin Institute of Chemical Technology, Jilin 132022, China;

Corresponding author: LOU Da-Wei, SUN Da-Zhi,
Received Date: 15 July 2015
Available Online: 18 September 2015
Fund Project: 本文系国家自然科学基金(Nos.21375046,21405058) (Nos.21375046,21405058)吉林省科技发展计划项目(No.20130521024JH) (No.20130521024JH)吉林省教育厅"十二五"科学技术研究项目(No.2015438)资助 (No.2015438)

A rapid analytical method was established for the determination of trace amounts of microcystins(MC-LR) in environmental water samples by magnetic solid phase extraction(MSPE) coupled with HPLC/UV based on a magnetic bentonite sorbent fabricated by solvothermal synthesis method. Several factors influencing the extraction efficiency of MC-LR, such as sorbent amount, pH condition, sample volume, adsorption and desorption time, and desorption solvent were investigated and optimized. Under the optimal extraction conditions, the limits of detection and quantification for the method were 0.75 ng/L and 1.5 ng/L respectively, which was far below the guideline recommended by the World Health Organisation. The method showed a good linearity(R²=0. 9993) in the ranges of 0.25-250μg/L for MC-LR. The MSPE sorbent was simple in preparation, low cost and magnetizable, and the developed MSPE-HPLV method was suitable for the rapid and sensitive determination of MC-LR in nature water samples.
- Magnetic,
- Solid phase extraction,
- Microcystins,
- High performance liquid chromatography
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