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Updated: Jun 1, 2026
Natural Product Discovery with LC-MS/MS Diagnostic Fragmentation Filtering: Application for Microcystin Analysis
Published on: May 31, 2019
[Determination of five microcystins in water using liquid chromatography-diode array detection/ion trap mass
Chao Wang1, Yibing Lü, Renji Xu
1China National Environmental Monitoring Center, Beijing 100012, China. preparing@126.com
Abstract:
A method for the determination of five microcystins (MCs) in water was established using liquid chromatography (LC)-diode array detection (DAD)/ion trap mass spectrometry (IT MS). The five MCs in water were enriched and purified by solid phase extraction, and determined by LC-DAD/IT MS. DAD was used for both qualitative and quantitative analysis, and IT MS was used for qualitative analysis only. Under the optimized conditions, the detection limits of 5 MCs in water were 0.1 microg/L. The average recoveries of the three spiked levels (0.2, 0.8 and 5 microg/L) were 52.2% - 115.2% with the relative standard deviations (RSDs) of 1.2% - 10.0%. This method uses UV absorption spectrum and MS spectrum in the qualitative and quantitative analysis, and can be applied in the determination of various MCs in both surface water and drinking water.
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