标准溶液浓度/(mg/L) | 标准溶液浓度回读值及回收率 | |
标准溶液浓度回读值/(mg/L) | 回收率 | |
0.5 | 0.47 | 94.0% |
1.0 | 0.94 | 94.0% |
2.0 | 2.02 | 101.0% |
5.0 | 5.20 | 104.0% |
标准曲线线性方程 | Response=2.044e-002*Amt-2.507e-002 | |
线性相关系数R2 | 0.995 |
试验次数 | 加标水平/(mg/kg) | |||||
5.0 | 10.0 | 50.0 | ||||
测定值 | 回收率 | 测定值 | 回收率 | 测定值 | 回收率 | |
1 | 3.82 | 76.4% | 6.90 | 69.0% | 32.03 | 64.06% |
2 | 3.67 | 73.4% | 7.09 | 70.9% | 32.21 | 64.42% |
3 | 3.78 | 75.6% | 7.20 | 72.0% | 33.63 | 67.26% |
4 | 3.95 | 79.0% | 6.98 | 69.8% | 30.92 | 61.84% |
5 | 3.87 | 77.4% | 7.13 | 71.3% | 32.09 | 64.18% |
6 | 4.03 | 80.6% | 7.02 | 70.2% | 31.82 | 63.64% |
平均值/(mg/kg) | 3.85 | 7.05 | 32.12 | |||
平均回收率 | 77.07% | 70.53% | 64.23% | |||
标准偏差SD | 0.12 | 0.10 | 0.80 | |||
相对标准偏差RSD | 3.01% | 1.40% | 2.49% |
检测项目 | 检测结果 | |||
人员1 | 人员2 | |||
1 | 2 | 1 | 2 | |
4-氨基偶氮苯 | 6.24 | 6.39 | 6.20 | 5.99 |
平均值 | 6.31 | 6.10 | ||
相对标准偏差 | 1.69% |
加标浓度/(mg/kg) | 5.0 |
样品中4-氨基偶氮苯检测值/(mg/kg) | |
1 | 3.82 |
2 | 3.67 |
3 | 3.78 |
4 | 3.95 |
5 | 3.87 |
6 | 4.03 |
7 | 3.92 |
8 | 3.88 |
9 | 4.01 |
10 | 3.90 |
平均值/(mg/kg) | 3.88 |
标准偏差SD/(mg/kg) | 0.10 |
方法检出限3×SD/(mg/kg) | 0.30 |