摘要
对辽宁铁岭地区主要作物水稻及玉米中重金属元素含量分布规律研究表明,重金属元素尤其是相关关系密切的铅、锌、镉、铬等元素,分布规律有很大相同之处,高含量数据点均围绕区内的柴河铅锌矿及其下游污染严重地区分布.进一步对柴河铅锌矿与铁岭地区背景环境的对比研究发现,水稻及玉米的分布特征与其背景环境有很大相关性,即土壤、浅层地下水中重金属含量高的地区,水稻及玉米中重金属含量亦较高;水稻玉米作物中重金属元素可通过食物链进而影响人体健康.
Research on the distribution of heavy metal element Province indicate that, heavy metal elements, especially Pb, Zn, Cd contents in paddy and corn from Tieling, Liaoning and Cr, share a common distribution rule, i.e. the high content spots are all distributed around heavily polluted area, such as Chaihe lead-zinc ore field and the lower reaches of Chaihe River. Comparison between Chaihe lead-zinc ore filed and Tieling area as background value shows that the distribution of heavy metal elements in paddy and corn is much correlated to the background environment such as soil and shallow groundwater. The heavy metal elements in paddy and corn can enter human body through food chain and harm the health.
出处
《地质与资源》
CAS
2008年第4期302-306,共5页
Geology and Resources
基金
中国地质调查局地质大调查项目(1212010511209)资助.
关键词
铁岭地区
水稻及玉米
重金属元素
背景环境
Tieling
paddy and corn
heavy metal element
distribution
background environment
