艾比湖流域农田土壤重金属的环境风险及化学形态研究
|
张兆永, 吉力力·阿不都外力, 姜逢清, 艾尼瓦尔·买买提
|
Environment Risk and Chemical Forms of Heavy Metals in Farmland of Ebinur Basin
|
Zhao-yong ZHANG, JILILI•Abuduwailil, Feng-qing JIANG, ANWAR·Mohammed
|
|
表1 土壤重金属的描述性统计 |
Table 1 Descriptive statistics of (class) heavy elements contents in surface soil of fields |
|
元素 | 范围 (mg/kg) | 均值 (mg/kg) | 标准差 | 变异系数 (%) | 超标率 (%) | 峰度 | 偏度 | 背景值 (mg/kg) | 国家二级标准 (mg/kg) | Zn | 52.11~272.8 | 107.91 | 11.28 | 42.87 | 46.49 | 18.1 | 15.8 | 68.8 | 300 | Pb | 15.31~71.43 | 34.81 | 3.92 | 45.69 | 25.57 | 22.5 | 18.5 | 19.4 | 350 | Cu | 11.54~98.54 | 35.87 | 4.57 | 34.74 | 31.82 | 21.5 | 17.6 | 26.7 | 100 | Hg | 0.01~0.76 | 0.037 | 0.01 | 86.49 | 75.12 | 37.6 | 35.1 | 0.017 | 1.0 | Ni | 12.7~58.06 | 29.28 | 5.61 | 19.96 | 15.19 | 27.7 | 21.5 | 26.6 | 60 | As | 7.3~19.54 | 15.57 | 2.19 | 32.81 | 30.51 | 15.2 | 11.8 | 11.2 | 25 | Cd | 0.01~0.58 | 0.16 | 0.011 | 75.57 | 61.57 | 35.9 | 33.3 | 0.12 | 0.6 | Cr | 25.4~216.24 | 74.51 | 3.84 | 25.62 | 18.15 | 23.7 | 18.6 | 49.3 | 250 |
|
|
|