Table 7 Heavy metal content in irrigation water in all counties (districts) of Nanning city (mg * 10–3/kg).
From: Assessment of environmental impacts of heavy metal pollution in rice in Nanning, China
Area | Sample number | PH | Total mercury | Lead | Cadmium | Selenium | Zinc | Total arsenic |
|---|---|---|---|---|---|---|---|---|
Long’an County | 25 | 7.5 | – | - | – | – | 33.44 | 3.64 |
Hengxian County | 20 | 6.9 | 1.30 | 19.28 | 1.52 | 8.41 | 18.73 | 13.63 |
Shanglin County | 20 | 7.8 | – | – | – | 1.10 | 38.40 | 1.66 |
Mashan County | 20 | 7.7 | – | 2.33 | 1.35 | 1.69 | 14.24 | 4.45 |
Wuming County | 20 | 6.9 | – | 3.30 | – | 2.24 | 11.25 | 5.83 |
Binyang County | 20 | 7.3 | 1.80 | 2.95 | 1.12 | 3.51 | 11.21 | 8.87 |
Liangqing district | 10 | 7.2 | – | – | – | 1.67 | 6.84 | 3.80 |
Jiangnan district | 10 | 7.1 | 1.3 | 26.09 | 2.02 | 10.48 | 22.73 | 24.65 |
XiXiangTang area | 10 | 7.2 | – | – | – | – | 40.00 | 10.50 |
Yongning district | 10 | 7.0 | – | – | – | 2.05 | 5.53 | 0.91 |
Xingning district | 10 | 6.7 | – | – | – | - | 11.95 | 8.86 |
Qingxiu district | 10 | 7.3 | – | – | – | 11.53 | 7.12 |
