CAJ | 학술논문

以罗布泊“大耳朵”地区从湖心至湖岸7个典型剖面为研究对象,采用石墨炉(GF-990)原子吸收分光光度法测定了119个沉积物样品中 Cd 元素的含量,并对其进行系统分析.结果显示,各剖面沉积物样品中 Cd 含量在盐壳层较高,往下各层 Cd 含量相对盐壳层含量较小且分布较均匀,其中 L07-10盐壳层 Cd 含量达到10．38 mg/kg,远超过了环境系统所能承载的能力,存在一定的生态风险性；水平方向 Cd 含量变化为湖中＞湖心＞湖岸.
이라포박“대이타”지구종호심지호안7개전형부면위연구대상,채용석묵로(GF-990)원자흡수분광광도법측정료119개침적물양품중 Cd 원소적함량,병대기진행계통분석.결과현시,각부면침적물양품중 Cd 함량재염각층교고,왕하각층 Cd 함량상대염각층함량교소차분포교균균,기중 L07-10염각층 Cd 함량체도10．38 mg/kg,원초과료배경계통소능승재적능력,존재일정적생태풍험성；수평방향 Cd 함량변화위호중＞호심＞호안.
The aim of this research was to reveal seven typical profiles from the center of the lake to shore of the lake of “Big Ear”region of Lop Nor,the Cd content among 1 1 9 sediment samples were measured and systematically analyzed by using graphite oven GF-990 atomic absorption spectromery.The results showed that the Cd contend of following different layers in salt crusted layer was distributed relatively less and more equally,of which Cd content of L07-10 salt crusted layer was 10.38 mg/kg,which was far more over the bearing capacity of the environment,so some ecological risks existed.In horizontal direction,the chan-ges of Cd content were as following:the middle of the lake>the center of the lake>the shore of the lake.