某电解铅厂周边农田土壤和玉米中铅污染评价及同位素溯源研究  

Research on Pollution Assessment and Pollution Source of Lead Isotope in Farmland Soil and Maize around an Electrolytic Lead Factory

作　　者：孙滨 都雪利 周影 李波[2] 王世成[2] 姚庆祯[1] 王颜红[2] 李国琛[2] SUN Bin;DOU Xueli;ZHOU Ying;LI Bo;WANG Shicheng;YAO Qingzhen;WANG Yanhong;LI Guochen(Ocean University of China,Qingdao,Shandong,266100,China;Institute of Applied Ecology, Chinese Academy of Science,Shenyang,Liaoning,110016,China;Zhejiang Shuimei Environmental Protection Engineering Co.,Ltd.,Hangzhou,Zhejiang,310013,China)

机构地区：[1]中国海洋大学,山东青岛266100 [2]中国科学院沈阳应用生态研究所,辽宁沈阳110016 [3]浙江水美环保工程有限公司,浙江杭州310013

出　　处：《广西科学》2019年第3期347-353,共7页Guangxi Sciences

基　　金：国家重点研发计划项目“农田和农产品重金属源解析与污染特征研究”(2016YFD0800303)资助

摘　　要：为探究铅在土壤-玉米-大气中的迁移转化行为,以某电解铅厂周边农田土壤和玉米为研究对象,采集距排烟口50m、110m、300m、500m、700m、900m和3000m处的土壤和玉米样品,利用原子吸收光谱仪(AAS)和电感耦合等离子体质谱仪(ICPMS)分别测定土壤、玉米和大气样品的铅含量和同位素比值。结果表明:电解铅厂周边的玉米均受到铅的污染,玉米根中的铅主要来自土壤,籽粒中的铅很有可能大部分来自大气,少部分来自土壤,茎中的铅很可能来自土壤而不是叶面传输;籽粒中的铅与叶片中的铅具有显著的相关关系(P<0.01),相关方程为y=-0.0002x^2+0.0461x-0.4643,R=0.9667。In order to explore the migration and transformation behavior of lead in soil maize atmosphere, the soil and maize in the farmland around an electrolytic lead plant were taken as research objects, and soil and maize samples at 50m, 110m, 300m, 500m, 700m, 900m and 3000m from the exhaust vents were collected. The lead content and isotope ratio of soil, maize and atmospheric samples were measured by atomic absorption spectrometry (AAS) and inductively coupled plasma mass spectrometry (ICP MS), respectively. The results show that the maize around the electrolytic lead plant is polluted by the lead plant, and the lead in the roots of maize mainly comes from the soil. It is very likely that the lead in the grain mostly comes from the atmosphere, and a small part comes from the soil. The lead in the stems probably comes from the soil rather than leaf transport. There is a significant correlation between the lead in the grains and the lead in the leaves (P <0.01).The correlation equation is y=-0.0002x 2+0.0461x-0.4643, R =0.9667.

关 键 词：土壤 玉米 大气 铅同位素 溯源 

分 类 号：X123[环境科学与工程—环境科学]