云南化工2026，Vol.53Issue(3)：56-59,4.DOI:10.3969/j.issn.1004-275X.2026.03.12
液相色谱-三重四极杆质谱法测定滇池水体中3种微囊藻毒素
Determination of Three Microcystins in Dianchi Lake Water by Liquid Chromatography-Triple Quadrupole Mass Spectrometry
左李美 1刘平 1张旭 1魏薇1
作者信息
- 1. 昆明市城市排水监测站,云南 昆明 650100
- 折叠
摘要
Abstract
A method based on liquid chromatography-tandem quadrupole mass spectrometry(LC-QQQ-MS)was established for the detec-tion of three important microcystins(MCs)in Dianchi Lake water.The water samples were frozen and thawed three times at-20 ℃,then fil-tered through a 0.22 μmpoly ethersulfone membrane and directly injected for analysis,eliminating the need for complex pretreatment steps.Quantification was performed using the external standard method,and the analysis time for a single sample was only 7 minutes.The results showed that the linear correlation coefficients(R2)of the standard curves of the three MCs were all greater than 0.999;the method detection limits were 0.002-0.003 μg/L,with relative standard deviations(RSD)ranging from 0.4％to 1.9％,indicating good precision;the spiked recoveries of actual water samples from Dianchi Lake were 83.4％-108％.This method is simple,rapid,and sensitive,and can be effectively applied to the rapid detection of microcystins in Dianchi Lake water.关键词
微囊藻毒素/液相色谱-三重四极杆质谱法/直接进样/滇池Key words
Microcystin/Liquid Chromatography-triple Quadrupole Mass Spectrometry/Direct Injection/Dianchi Lake分类
能源科技引用本文复制引用
左李美,刘平,张旭,魏薇..液相色谱-三重四极杆质谱法测定滇池水体中3种微囊藻毒素[J].云南化工,2026,53(3):56-59,4.
