厦门某区农田土壤中铅、镉、铬元素污染状况调查  

Investigation on the pollution status of lead,cadmium and chromium in the farmland soil of a district in Xiamen

作　　者：白艳艳[1] 黄婧 潘秋仁[1] BAI Yan-yan;HUANG Jing;PAN Qiu-ren(Xiamen Municipal Center for Disease Control and Prevention,Fujian 361021,China)

机构地区：[1]厦门市疾病预防控制中心,福建361021

出　　处：《中国卫生检验杂志》2023年第12期1516-1520,共5页Chinese Journal of Health Laboratory Technology

基　　金：厦门市重点专科建设项目资助厦卫科教[2021]215号;2022年厦门市医疗卫生指导性项目资助(3502Z20224-ZD1348)。

摘　　要：目的探讨厦门某区农田土壤中铅、镉、铬含量,描述其分布特点及规律,为土壤治理和农产品种植提供参考。方法收集某区农田土壤样品共120份,测定铅、镉、铬的含量。根据福建省土壤环境背景值、《食用农产品产地环境质量评价标准》(HJ/T 332—2006)进行检测结果评价。结果120份土壤样品中,铅和铬的检出率高于镉。与福建省土壤环境背景值相比,超标率从高到低分别为镉、铅、铬;与HJ/T 332—2006相比,仅铬未检出超标样品。不同年份土壤样品中铅、铬含量成下降趋势,不同土壤类型中的铅、铬、镉含量差异无统计学意义。汀溪镇土壤中铅、西柯镇土壤中镉和铬含量高于其他5镇,该区土壤环境质量评定均为3级,属于超标土壤。该区土壤中铅-镉、镉-铬存在相关性。结论该区土壤中存在铅、镉、铬污染,需加强监管并采取修复措施。Objective This paper aims to investigate the contents of lead,cadmium and chromium in farmland soil of a district in Xiamen and describe their distribution characteristics and patterns,so as to provide reference for soil management and agri⁃cultural product cultivation.Methods A total of 120 farmland soil samples were collected in the district,and the contents of lead,cadmium and chromium were determined.The test results were evaluated according to the background values of soil envi⁃ronment in Fujian Province and Environmental Quality Evaluation Standards for Edible Agricultural Products(HJ/T 332—2006).Results Among the 120 soil samples,the detection rates of lead and chromium were higher than that of cadmium.Compared with the background value of soil environment in Fujian Province,the exceeding rates from high to low were cadmium,lead,chromium.Compared with HJ/T 332-2006,only chromium in the soil samples didn’t exceed the standard.The contents of lead and chromium in soil samples in different years showed a decreasing trend.There was no statistical signifi⁃cance on the difference in the contents of lead,chromium and cadmium in different soil types.Lead in the soil collected from Tingxi town and cadmium and chromium in the soil collected from Xike town were higher than those of the other five towns.The soil environmental quality was rated as grade 3,and they belonged to over-standard soils.There was correlation between lead-cadmium and cadmium-chromium in the soil of this district.Conclusion There are lead,cadmium and chromium pollution in the soil of this area,so it is necessary to strengthen supervision and take remediation measures.

关 键 词：农田 土壤 重金属 

分 类 号：O657[理学—分析化学]