摘要
为了解淮安市粮食种植区稻田土壤和稻谷中重金属的污染现状,采集淮安市5个县区(淮阴区、淮安区、洪泽区、清江浦区、涟水县)40组稻谷和土壤样品,并测定Pb、Cd、Cr、As、Hg 5种重金属的含量。采用单因子污染指数法和内梅罗综合指数法对土壤样品中的重金属含量水平进行分析和评价,利用富集因子法对5种重金属在稻谷中的富集状况进行评价。结果表明,淮安市稻田土壤和稻谷中5种重金属元素的平均含量均在国家标准限值范围内;稻田土壤的Cd和As的单因子污染指数较高;土壤和稻谷中Pb、Cd、Cr、As 4种重金属含量呈微弱相关;稻谷富集Cd和As的水平较高。研究区土壤-水稻系统5种重金属累积程度低,安全性较好。
40 groups of rice and paddy soil samples were collected from five districts of Huai’an City(Huaiyin District,Huai’an District,Hongze District,Qingjiangpu District,and Lianshui County).The content of Pb、Cd、Cr、As and Hg were detected.The single factor pollution index method and Nemero comprehensive index method were used to analyze and evaluate the heavy metal content level in soil samples.The enrichment status of five heavy metals in rice was evaluated by the enrichment factor method.The results showed that the average content of five heavy metal elements in paddy soil and rice in Huai’an was within the national standard limit range.The single factor pollution index of Cd and As in paddy soil was high.The contents of Pb,Cd,Cr and As in soil and rice were weakly correlated.The concentration of Cd and As in rice was high.The accumulation of five heavy metals in the soil-rice system in the study area is low,and the study area is safe.
作者
王芹
徐瑞
袁爱菊
吴珺玮
张芹
Wang Qin;Xu Rui;Yuan Aiju;Wu Junwei;Zhang Qin(Huai’an Center for Disease Control and Prevention,Huai’an 223003,Jiangsu,China)
出处
《分析仪器》
CAS
2023年第6期72-77,共6页
Analytical Instrumentation
基金
淮安市突发公共卫生事件应急检测重点实验室培优课题项目(ETPHI-P-14)。
关键词
土壤
稻谷
重金属
含量水平
富集特征
Soil
Rice
Heavy metals
Content level
Enrichment characteristics
