攀枝花木棉树芯中化学元素含量与环境变化关联性  

Relationship between contents of some chemical elements in the ceiba tree rings and changes of environment in Panzhihua,Sichuan,China

作　　者：罗辉[1] 庹先国[1] 李哲[1] 穆克亮[1] 徐争启[1] 

机构地区：[1]成都理工大学"地质灾害防治与地质环境保护"国家重点实验室,成都610059

出　　处：《成都理工大学学报（自然科学版）》2010年第3期315-321,共7页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家自然科学基金资助项目(40673058);四川省科技支撑计划项目(2008GZ0040)

摘　　要：以攀枝花市采矿区、选矿区、冶炼区和对照区的木棉树为研究对象,通过ICP-MS分析方法测量树芯中钛、钒、铁三种元素含量,并对各元素含量历年变化情况进行分析。结果表明:三种元素的质量分数平均值在冶炼区和选矿区均较大,特别是冶炼区尤为明显,比对照区的平均值高出1～2倍,Fe有时甚至高出数倍;采矿区和对照区的比较接近,且均较小。总体上,对照区和采矿区树芯样品年份分布散乱,波动较大,可是在1979～1983年、1989～1991年、1997～2004年3个时间段4个区域都出现相对高值,一致性较好。通过相关性分析,结合攀枝花市工业活动可知,树芯中钛、钒、铁元素含量与攀枝花市钒钛磁铁矿区的开采、冶炼密切相关。用ICP-MS方法分析攀枝花市木棉树芯中元素含量来研究攀枝花市的工业生产环境污染问题是有效的。This paper studies the ceiba trees from four different area（nearby mine area,beneficiating area,smelter area and control area）in Panzhihua of Sichuan Province,determines Ti,V,Fe in the tree-rings by ICP-MS,and analyzes the historical changes of the elements respectively.The results show that the mass fraction averages of the three elements in the beneficiating area and the smelter area are large.Especially in the smelter area,the average of that is higher than that in the control area 1-2 times,and sometimes Fe even is higher than several times.The content of elements in the nearby mine area and the control area are quite close,being considerably smaller.In general,the year of tree core sample is distributed scatter and volatile.But in the three time periods of 1979-1983,1989-1991 and 1997-2004,the four regions have a relatively high-value and good consistency.Through the correlation analysis and combined with the industrial activities in Panzhihua,people can see that the contents of Ti,V,Fe in tree cores are related to the mining and smelting of V-Ti magnetite in Panzhihua.At the same time,it is effective to analyze the element contents of the ceiba tree-core by ICP-MS to study environmental problems of industrial production of Panzhihua.

关 键 词：攀枝花市 树木年轮 元素含量 ICP-MS 环境污染 

分 类 号：X173[环境科学与工程—环境科学]