搅拌棒吸附萃取-LC-MS/MS测定二氯吡啶酸
施晓婷

Determination of clopyralid by liquid chromatography-mass spectrometry combined with stir bar sorptive extraction
Xiaoting Shi
表3 加标回收率和相对标准偏差(n=6)
序号 加标质量浓度/(μg·L-1 测定值/(μg·L-1 平均测定值/(μg·L-1 平均回收率/% RSD/%
1 2 3 4 5 6
样品1 1.00 0.84 0.87 0.89 0.94 0.88 0.91 0.89 88.83 3.9
50.00 46.89 48.17 46.87 54.25 48.01 47.06 49.21 98.42 5.9
100.00 94.84 97.24 96.36 99.44 94.72 97.31 96.65 96.65 1.8
样品2 1.00 0.88 0.96 0.92 0.89 0.88 0.91 0.91 90.67 3.4
50.00 49.15 48.51 49.13 50.21 49.68 49.71 49.40 98.80 1.2
100.00 94.64 99.12 96.64 95.83 97.44 95.68 96.56 96.56 1.6
样品3 1.00 0.94 0.96 0.89 0.93 0.92 0.93 0.93 92.83 2.5
50.00 47.21 45.16 48.64 49.13 50.21 48.18 48.09 96.18 3.6
100.00 99.17 97.46 96.49 94.87 94.18 99.14 96.89 96.89 2.2