摘要：
采用搅拌棒吸附萃取，建立液相色谱-质谱法（LC-MS/MS）测定环境水体中二氯吡啶酸残留量。结果表明：二氯吡啶酸在1.0~100.0 μg/L内与其质谱响应值呈线性关系，线性回归方程为y=7.28×107x+1.02×106，相关系数为0.999 8，检出限（3S/N）为0.3 μg/L，定量限（10S/N）为1.0 μg/L。在1.0、50.0、100.0 μg/L水平的添加浓度下，加标回收率在88.83%~98.80%，相对标准偏差（n=6）为1.2%~5.9%。
关键词:
搅拌,
吸附萃取,
液相色谱-质谱法,
二氯吡啶酸
Abstract:
The residual clopyralid in environment water was determined by liquid chromatography-mass spectrometry combined with stir bar sorptive extraction. The results showed that the concentration of clopyralid was linearly related to the mass spectrometry response in the range from 1.0 μg/L to 100.0 μg/L, and the linear regression equation was y=7.28×107x +1.02×106, and the correlation coefficient is 0.999 8. The limits of detection(3S/N) and the limits of quantitation(10S/N) were 0.3 μg/L and 1.0 μg/L, respectively. The recovery rate ranged from 88.83% to 98.80%, and the relative standard deviations ranged from 1.2% to 5.9%.
Key words:
stirring,
sorptive extraction,
liquid chromatography-mass spectrometry,
clopyralid
中图分类号:
施晓婷. 搅拌棒吸附萃取-LC-MS/MS测定二氯吡啶酸[J]. 工业水处理, 2021, 41(4): 117-120.
Xiaoting Shi. Determination of clopyralid by liquid chromatography-mass spectrometry combined with stir bar sorptive extraction[J]. Industrial Water Treatment, 2021, 41(4): 117-120.