重金属 | As | Cd | Cr | Cu | Pb | Zn |
浓度范围 | 1.55~16.20 | 0.00~0.11 | 0.00~0.42 | 0.06~7.85 | 0.01~0.47 | 0.61~9.39 |
均值(n = 108) | 5.40 | 0.03 | 0.14 | 0.88 | 0.10 | 3.20 |
标准偏差 | 3.65 | 0.03 | 0.07 | 0.75 | 0.08 | 1.74 |
GB 3838-2002 (III)a | 50 | 5 | 50 | 1000 | 50 | 1000 |
GB 5749-2006b | 10 | 5 | 50 | 1000 | 10 | 1000 |
巢湖 [20] | 3.735 | 0.088 | - | 1.494 | 1.484 | - |
淮河(淮南段) [21] | 0.141 | 0.011 | 0.147 | 0.153 | 0.121 | - |