十月
表1 工作曲线砷浓度与对应的荧光强度
序号 | 砷标准浓度xi | 荧光强度Ifi | a+bxi | [Ifi-(a+bxi)]2 | [xi- ]2 |
(μg/L) | |||||
1 | 1.0 | 463.339 | 510.753 | 2248.087 | 17.361 |
2 | 1.0 | 472.016 | 510.753 | 1500.555 | 17.361 |
3 | 2.0 | 911.989 | 922.682 | 114.340 | 10.028 |
4 | 2.0 | 925.874 | 922.682 | 10.189 | 10.028 |
5 | 4.0 | 1762.396 | 1746.540 | 251.413 | 1.361 |
6 | 4.0 | 1748.999 | 1746.540 | 6.047 | 1.361 |
7 | 6.0 | 2651.069 | 2570.398 | 6507.810 | 0.694 |
8 | 6.0 | 2624.594 | 2570.398 | 2937.206 | 0.694 |
9 | 8.0 | 3485.114 | 3394.256 | 8255.176 | 8.028 |
10 | 8.0 | 3396.394 | 3394.256 | 4.571 | 8.028 |
11 | 10.0 | 4213.023 | 4218.114 | 25.918 | 23.361 |
12 | 10.0 | 4070.676 | 4218.114 | 21737.964 | 23.361 |
∑ | 62.00 | - | - | 43599.276 | 121.667 |
表2 考核样重复性试验结果
重复次数 | 1 | 2 | 3 | 4 | 5 |
荧光强度If | 2585.639 | 2552.273 | 2539.503 | 2540.327 | 2582.756 |
砷浓度Cx(μg/L) | 6.037 | 5.956 | 5.925 | 5.927 | 6.030 |
砷浓度Ci(μg/L) | 60.37 | 59.56 | 59.25 | 59.27 | 60.30 |
重复次数 | 6 | 7 | 8 | 9 | 10 |
荧光强度If | 2611.591 | 2594.291 | 2596.351 | 2571.634 | 2568.751 |
砷浓度Cx(μg/L) | 6.100 | 6.058 | 6.063 | 6.003 | 5.996 |
砷浓度Ci(μg/L) | 61.00 | 60.58 | 60.63 | 60.03 | 59.96 |
附件: