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当前位置: 首页 > 文章 > 大型铜冶炼厂周边农田区大气重金属沉降特征研究 农业环境科学学报 2014,33 (07) 1328-1334
Position: Home > Articles > Atmospheric Deposition of Heavy Metals in Farmland Area Around a Copper Smelter Journal of Agro-Environment Science 2014,33 (07) 1328-1334

大型铜冶炼厂周边农田区大气重金属沉降特征研究

作  者：
陶美娟;周静;梁家妮;崔红标;徐磊;祝振球
单  位：
中国科学院南京土壤研究所
关键词：
大气沉降;重金属;时空变异;农田区
摘  要：
为探索铜冶炼厂周边农田区大气重金属沉降的时空变异特征,以冶炼厂为中心,四周等距离均匀分设8个监测点,于2012年5月至2013年4月,根据酸沉降检测技术规范,采收大气干湿沉降混合样品,利用原子吸收分光光度法分析样品中Cu、Cd、Pb、Zn、Cr含量,计算各监测点所代表区域各类重金属沉降通量。结果显示,研究区重金属Cu、Cd、Pb、Zn、Cr的年沉降通量分别为638、6.56、70.0、225、22.7 mg·m-2·a-1。五种重金属沉降量具有一定的时间变化特征,其中Cd、Zn和Cr的月际间变化显著(P<0.05,n=96),Pb、Zn、Cr季节间变化显著(P<0.05,n=32),而Cu无显著的月间或季间变化。空间上,Cu、Cd、Pb年沉降通量有极显著性差异(P<0.01,n=8),以铜冶炼厂西南方向的九牛岗监测点最高,而Zn和Cr则无显著性差异。
译  名：
Atmospheric Deposition of Heavy Metals in Farmland Area Around a Copper Smelter
作  者：
TAO Mei-juan;ZHOU Jing;LIANG Jia-ni;CUI Hong-biao;XU Lei;ZHU Zhen-qiu;Institute of Soil Science Chinese Academy of Sciences;National Engineering Research and Technology Center for Red Soil Improvement Red Soil Ecological Experiment Station, Chinese Academy of Sciences;University of Chinese Academy of Sciences;
关键词：
atmospheric deposition;;heavy metals;;spatial-temporal variation;;farmland area
摘  要：
Atmospheric deposition is one of transport approaches of heavy metals. Farmland is facing heavy metal pollution from the surrounding industries. In this study, we selected a typical farmland area to explore the spatial-temporal variation characteristics of heavy metal deposition around a copper smelter. Between May, 2012 to April, 2013, atmospheric deposition samples(dry and wet)were collected monthly at 8 monitoring sites. The annual deposition fluxes of heavy metals were 638.0 mg·m-2·a-1, 6.56 mg·m-2·a-1, 70.0 mg·m-2·a-1, 225.0 mg·m-2·a-1, and 22.7 mg·m-2·a-1for Cu, Cd, Pb, Zn and Cr, respectively. These heavy metals showed temporal variations. Zinc and Cr depositions had significant monthly and seasonal variations(P<0.05), but Cd showed significant monthly variation only(P<0.05, n=96), and Pb seasonal differences only(P<0.05, n=32). However, no significant monthly or seasonal variations were found for Cu deposition. The annual deposition fluxes of Cu, Cd and Pb had markedly difference between monitoring sites(P<0.01, n=8), but not for Zn and Cr(P>0.05, n=8).

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