摘要
以四川江安县耕地土壤为研究对象,研究耕地土壤中重金属污染状况并探讨其污染源,为污染治理提供科学依据。采用X荧光光谱法、电感耦合等离子体发射光谱法、原子荧光法,分别检测岩石、土壤样品的As和重金属元素组成。运用GIS分析功能提取出耕地土壤中As和重金属元素异常信息。结合岩石和耕地土壤样品的测试数据,对所获得的多源信息进行了综合研究。全区耕地土壤中,As、Cr、Cu、Zn、Ni无污染。Cd、Hg、Pb普遍有中度污染。污染源探讨结果表明,污染源与土壤的母岩无关。污染源很可能主要来自含Cd、Hg、Pb的工业废水、劣质化肥、农药,以及农用塑料薄膜等固体污染物等。
The farm soil samples in Jiang'an County of Sichuan Province have been taken for studying the pollution of heavy metals in farm soils,in order to discuss their pollution sources of heavy metals and to provide scientific basis for the treatment of polluted soils.X-fluorescence spectrometry,inductively coupled plasma emission spectrometry and atomic fluorescence spectrometry have been used to determine contents of As and heavy metal elements of rock and soil samples in this paper.The GIS analysis function was used to extract the information of anomalies of As and heavy metal elements in farm soils.Combining with the test data of rock and cultivated soil samples,a comprehensive study on the obtained various information has been carried out.The results show that there is no pollution for elements of As,Cr,Cu,Zn and Ni,but medium pollution for elements of Cd,Hg,and Pb in farm soils in the whole area.A discussion regarding on the pollution sources of some elements shows that the pollution of farm soils is not originally caused by the weathered rocks.The pollution of farm soils are likely caused by Cd,Hg,and Pb-bearing industrial wastewater,inferior quality chemical fertilizers and pesticides,and solid pollutants such as plastic film and others.
作者
何沛南
何明友
白宪洲
HE Pei-nan;HE Ming-you;BAI Xian-zhou(Civil Aviation Flight University of China,Guanghan Siehuan 618307,China;Chengdu University of Technology,Chengdu 610059,China)
出处
《矿物岩石地球化学通报》
CAS
CSCD
北大核心
2018年第5期967-972,共6页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
四川省“金土地工程”区域农业地质调查子项目(J-05)
关键词
GIS
耕地土壤
重金属元素
异常信息提取
污染源
GIS
farm soil
heavy metals
extraction of information of anomalies
pollution source
