图1 黄曲霉毒素B1、B2、G1、G2工作曲线
表2 空白值测定结果
空白测定次数(n) | 峰面积 | 浓度(mg/L) |
1 | 0 | 0 |
2 | 0 | 0 |
3 | 0 | 0 |
平均值 | 0 |
表3 试样测定结果
B1 | B2 | G1 | G2 | ||||||
回收率 | RSD | 回收率 | RSD | 回收率 | RSD | 回收率 | RSD | ||
试剂加标(2ppb) | 1 | 93.13 | 3.36 | 95.60 | 2.46 | 92.73 | 3.91 | 98.07 | 2.38 |
2 | 100.28 | 100.16 | 100.44 | 98.44 | |||||
3 | 98.76 | 97.86 | 99.46 | 99.12 | |||||
4 | 98.02 | 99.93 | 93.09 | 92.81 | |||||
5 | 97.82 | 98.74 | 99.09 | 96.61 | |||||
6 | 92.24 | 94.17 | 92.71 | 95.82 | |||||
基质加标(0.5ppb) | 1 | 64.40 | 3.97 | 70.46 | 3.87 | 78.92 | 4.31 | 73.43 | 4.89 |
2 | 60.80 | 67.21 | 77.63 | 79.60 | |||||
3 | 57.53 | 65.32 | 75.80 | 75.14 | |||||
4 | 62.46 | 72.38 | 82.59 | 80.17 | |||||
5 | 59.36 | 71.56 | 75.16 | 76.85 | |||||
6 | 60.03 | 69.67 | 83.25 | 83.96 | |||||
基质加标(2ppb) | 1 | 75.59 | 3.25 | 81.29 | 3.54 | 82.07 | 4.62 | 82.05 | 4.31 |
2 | 73.30 | 79.14 | 75.16 | 79.44 | |||||
3 | 71.36 | 80.80 | 80.06 | 81.56 | |||||
4 | 75.81 | 83.16 | 81.36 | 81.28 | |||||
5 | 70.91 | 81.44 | 81.53 | 76.06 | |||||
6 | 70.48 | 74.98 | 73.60 | 73.70 | |||||
基质加标(5ppb) | 1 | 85.29 | 3.27 | 89.74 | 2.90 | 100.80 | 4.80 | 92.30 | 3.02 |
2 | 90.27 | 95.90 | 109.18 | 92.65 | |||||
3 | 87.58 | 93.70 | 108.12 | 93.29 | |||||
4 | 90.80 | 95.68 | 97.19 | 85.75 | |||||
5 | 93.57 | 94.54 | 107.71 | 90.93 | |||||
6 | 91.40 | 90.16 | 100.78 | 90.19 |
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