编号 项目 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | |
A220 nm | 0.1021 | 0.1876 | 0.2564 | 0.2975 | 0.3685 | 0.4465 | 0.6057 | |
A275 nm | 0.0028 | 0.0092 | 0.0191 | 0.0174 | 0.0193 | 0.0233 | 0.0408 | |
As | 0.0966 | 0.1692 | 0.2182 | 0.2627 | 0.3299 | 0.3999 | 0.5241 | |
空白试样 | A220 nm = 0.0279,A275 nm = 0.0088则Ab = 0.0103 | |||||||
Ar | 0.0863 | 0.1589 | 0.2079 | 0.2524 | 0.3196 | 0.3896 | 0.5138 | |
硝酸盐氮含量μg∙L−1 | 50 | 100 | 150 | 200 | 250 | 300 | 400 | |