昆磨高速公路K5至K29两侧土壤和玉米重金属污染研究  

STUDY ON HEAVY METAL POLLUTION IN SOIL AND CORN ALONG BOTH SIDES OF THE KUNMING-MOHANEXPRESSWAY FROM K5 TO K29

作　　者：邹鲤岭[1] 李瑾[1] 郎学伟[1] ZOU Li-ling;LI Jin;LANG Xue-wei(Yunnan Land and Resources Vocational College,Kunming 650217)

机构地区：[1]云南国土资源职业学院,云南昆明650217

出　　处：《云南地质》2024年第3期341-344,共4页Yunnan Geology

摘　　要：基于昆磨高速K5至K29两侧农田土壤及玉米野外调查采样,测定分析土壤及玉米中Pb、Cd和Cu的含量。采用综合污染指数法对玉米和土壤中重金属污染状况进行评价。随着公路两侧距离的增加,土壤、玉米中Pb含量逐渐减少,说明土壤中Pb主要来源于汽车尾气排放,建议在距离公路50m外种植玉米。玉米中Cd含量非常低,不受公路远近的影响。土壤Cu污染严重,但玉米均未受到Cu污染,说明土壤Cu未迁移转化到玉米可食用部分。Based on a field survey and sampling of farmland soil and corn along both sides of the Kunming-MohanExpressway from K5 to K29,the contents of Pb,Cd,and Cu in the soil and corn were analyzed.The comprehensive pollution index method was used to evaluate the heavy metal pollution status in corn and soil.The results show that the Pb content in the soil and corn gradually decreaseswith increasing distance from both sides of the highway,indicating that Pb in the soil is primarily originated from automobile exhaust emissions.Thus,it is recommended to plant corn at least 50 meters away from the highway.The Cd content in corn is very low and unaffected by the proximity to the highway.The Cu pollution in the soil is severe,but corn has not been contaminated with Cu,suggesting that Cu in the soil has not migrated to the edible parts of corn.

关 键 词：玉米 土壤污染 重金属污染 昆磨高速公路K5至K29 云南昆明 

分 类 号：P59[天文地球—地球化学] X141[天文地球—地质学]