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| 海河流域地表水中微囊藻毒素的测定 |
| Determination of Microcystins in Surface Water in Haihe River Basin |
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| DOI： |
| 中文关键词: 微囊藻毒素 固相萃取 液相色谱-串联质谱法 地表水 海河流域 |
| 英文关键词: Microcystins Solid phase extraction Liquid chromatography tandem mass spectrometry Haihe river basin Surface water |
| 基金项目:长江水利委员会长江科学院开放研究基金资助项目(CKWV2018495/KY)；国家国际科技合作专项基金资助项目(2013DFA71340)；海河流域水质监测基金资助项目（126204012002170001） |
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| 中文摘要: |
| 水样酸化过滤后用Oasis HLB固相萃取小柱净化富集，采用液相色谱-串联质谱法同时测定地表水中微囊藻毒素(MC-LR和MC-RR)，通过优化试验条件，使方法在100 μg/L~100 μg/L范围内线性良好。MC-LR和MC-RR在水中的方法检出限为012 ng/L和02 ng/L，空白加标回收率为727%～885%，3次测定结果的RSD为91%~107%。将该方法用于6个海河流域部分重要水源地水样的监测，虽然部分水样中检测出MC-LR和MC-RR，但检出值均低于标准限值。 |
| 英文摘要: |
| After acidification and filtration, the water samples were purified and enriched by Oasis HLB solid phase extraction column, microcystins(MC LR and MC RR) in surface water were simultaneously determined by liquid chromatography tandem mass spectrometry. By optimizing the experimental conditions, the method had good linearity in the range of 1.00 μg/L to 100 μg/L. The detection limits of MC LR and MC RR were 0.12 ng/L and 0.2 ng/L. The recoveries of blank standard addition were 72.7%~88.5%. The RSDs of three repeated measurements were 9.1%~10.7%. The method was applied to the water samples from six important water sources in Haihe river basins. Although MC LR and MC RR were detected in some samples, measurements were lower than the standard limits. |
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