大石桥地区与镁相关元素的相互关系及其影响因素  

Correlativity and influence of metal elements and magnesium of Dashiqiao Area

作　　者：刘宇英[1] 王恩德[1] 李勇[1] 付建飞[1] 

机构地区：[1]东北大学资源与土木工程学院,沈阳110004

出　　处：《安全与环境学报》2006年第6期50-53,共4页Journal of Safety and Environment

基　　金：辽宁省重大攻关项目(20014011043)

摘　　要：大石桥地区以丰富的菱镁矿资源而著称,但资源的开采也给当地生态环境带来负面的影响。以大石桥地区为研究背景,分析研究菱镁矿开采对当地地球化学环境造成的影响。采用数学统计和相关分析方法研究10种元素在不同生态环境因子中的相互关系及土壤试样中的含量变化曲线;重点分析了9种元素在土壤中的相互关系及其制约因素。结果表明,大石桥地区的菱镁矿开采严重影响了研究区域内的地球化学环境以及各种金属非金属元素在不同生态环境因子中的含量;Mg在土壤中的含量变化会不同程度地影响土壤对其他金属非金属元素的吸收;土壤中一部分地球化学性质相近元素的相关性并没有达到显著水平;元素在土壤环境中的相互关系与其外部环境有一定的关系。镁元素对动植物而言是不可缺少的常量元素,但高镁环境不利于动植物正常的生长发育,威胁到了人类健康,容易产生一些地方性疾病。Dashiqiao Area in Liaoning Province is known as the rich- est magnesite reserves in the world in its Lower-Middle Proterozoic rocks. However, their prospecting and exploration has also brought about eco-environmental influence and the living conditions of the people. The present article is inclined to report the authors＇ studies on the geochemical effect due to the magnesite exploration. At the same time, correlation and concomitant factors between the metals and other elements in the mineral, soil and the water of the area, have also been comprehensively studied. In addition, the paper has also studied the mutual influence of the 10 elements in different environmental factors by means of statistics and co, relative comparison with the values curve of the metal and other elements in the 16 soilsamples analyzed. Based on the study of the accumulation characteristics of the 10 related elements in the soil samples, 9 kinds of metal elements in the soils have been mainly analyzed with the focused discussion on the correlativity and restricting factors in the 9 metal elements of the above-mentioned soils. Analysis results show that the exploitation of magnesite seriously affects the content of each element in different factors and the geochemical environment conditions of the area. The content of magnesium can influence differently the other elements in the soils, the most serious of which is Pb, whose content depends on the Mg in the soils, Though the corrclativity of parts of these elements with the nearly same geochemistry characteristics is not so obvious, the outer feature of the environment proves to affect the corrolativity of the elements and their relation with the soils. Although magnesium is an essential, though small in amount, and constantly and inherently needed to the animals and plants, harm would be also brought about and even lead to some illnesses. On the other hand, superfluous magnesium does harm, too, and even cause local diseases.

关 键 词：地球化学 菱镁矿 镁 元素的相互关系 相关性 大石桥地区 

分 类 号：X142[环境科学与工程—环境科学]