| 检测项目 | 限值 | W1 | W2 | W3 | W4 | W5 | W6 |
测定值 | 铜 | 0.1 | ND | ND | ND | 0.07 ± 0.01 | ND | 0.08 ± 0.01 |
锌 | 0.05 | ND | ND | ND | ND | ND | ND | |
砷 | 0.05 | ND | ND | ND | 7 ± 1 × 10−4 | ND | ND | |
汞 | 5 × 10−5 | ND | 5.3 ± 0.1 × 10−5 | ND | 9 ± 0.1 × 10−5 | ND | ND | |
铬(VI) | 0.01 | ND | ND | ND | ND | ND | ND | |
Pi | 铜 | - | 0 | 0 | 0 | 0.7 | 0 | 0.8 |
锌 | - | 0 | 0 | 0 | 0 | 0 | 0 | |
砷 | - | 0 | 0 | 0 | 0.014 | 0 | 0 | |
汞 | - | 0 | 1.1 | 0 | 1.8 | 0 | 0 | |
铬(VI) | - | 0 | 0 | 0 | 0 | 0 | 0 |