Abstract：As playa is the typical characteristic in “Big Ear” Region of Lop Nor Lake, it is significant for enriching playa heavy metal earth environmental chemical data by analyzing species distribution of heavy metal among this district. In this thesis, heavy metal Cd，Pb，Ni，Cu in L07-11 Profile Sediments of “Big Ears” Region of Lop Nor Lake are considered as research objects. Tessier sequential extraction and Graphite furnace atomic absorption method(GF-990) are used to discuss and analyze five forms of Cd，Pb，Ni，Cu among sediments. The results show that the content of Cd, Pb, Ni and Cu is in the range from 1.10～2.54, 9.18～20.02，9.88～17.15，4.43～21.11 mg·kg-1, respectively. The value of organic matter range from 8.71～54.72 g·kg-1. The order of the bioavailable state in heavy metals is Cd＞Pb＞Cu＞Ni. Pb and Cd mainly exist in exchangeable form including water-soluble, and that Ni is in residual form, and that Cu is mostly in Fe-Mn oxide bound iron-manganese oxides or in residual form. Among surface sediments, effective content of heavy metal is more than 80%. Except Cu, the content of heavy metal Cd，Pb，Ni in exchangeable form is more than 60%. Heavy metal Cd and Pb has higher secondary release potential. The content of heavy metal and organic material has some correlation.
Key words：Lop Nor;sediment;Heavy metals;Organic material
朱新萍，张良绘，蒋平安*，贾宏涛，郑春霞，樊舜会. 罗布泊“大耳朵”地区L07-11剖面沉积物重金属赋存形态研究 [J]. 光谱学与光谱分析, 2014, 34(12): 3340-3344.
ZHU Xin-ping, ZHANG Liang-hui, JIANG Ping-an*, JIA Hong-tao, ZHENG Chun-xia, FAN Shun-hui. Analysis of Chemical Speciation of Heavy Metals in L07-11 Profile Sediments of “Big Ear” Region of Lop Nor Lake. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(12): 3340-3344.
