大气干湿沉降重金属元素通量及对农田土壤的影响——以四川崇州为例

叶娇珑, 钟红梅, 徐争强, 马婵华

Flux of heavy metals in atmospheric dry and wet precipitation and their effects on farmland soil: A case study of Chongzhou,Sichuan

YE Jiao-Long, ZHONG Hong-Mei, XU Zheng-Qiang, MA Chan-Hua

表1 研究区大气干湿沉降重金属含量

Table 1 The content of heavy metals deposed by dry and wet precipitation in the study area mg/kg

As Hg Cd Cr Cu Ni Pb Zn 湿物质 最大值 0.00059 - 0.00027 0.07544 0.00672 0.00156 0.01920 0.32167 最小值 - - 0.00008 0.00276 0.00089 0.00033 0.00073 0.01148 平均值 0.00046 - 0.00012 0.01288 0.00308 0.00063 0.00376 0.05807 干物质 最大值 6.65358 0.16257 1.99882 62.99439 50.64183 20.86872 163.72294 420.90655 最小值 1.21612 0.04969 0.55682 15.32678 12.19508 5.02972 20.35649 102.76901 平均值 2.46887 0.10948 1.35057 41.21737 32.86500 13.38574 66.39179 271.63615 研究区土壤平均值 11.72 0.17 0.42 93.54 38.46 33.97 41.86 104.50 四川省土壤背景值 10.4 0.061 0.079 79 31.1 32.6 30.9 86.5 风险筛选值 35 0.6 0.6 200 200 100 120 250