Characteristicsofphosphorus,fluorineandsulfurinsurfacesedimentsfromyangzonghailake,China

Zhang yuxi，Liu jingtao，Xiang xiaoping

Abstract

The content and characteristics of phosphorus, fluorine and sulfur in surface sediments fromYangzonghai Lake inYunnan, Chinawere analyzed and the single standard index to assess the contamination degree was utilized. The results showed that the average concentrations of phosphorus, fluorine and sulfur in surface sediments of Yangzonghai Lake were up to 1041.3, 1074.8 and 2743.1mg/kg, respectively. It is considered that human activities, such as sanitarywaste, production waste, process gas, powerboat, fish culture in net pen were the major sources of phosphorus, fluorine and sulfur inYangzonghai Lake. The mean standard indexes of phosphorus, fluorine, sulfur were up to 1.74, 1.34 and 1.31 respectively, which indicated that the contaminations of phosphorus, fluorine and sulfur were all serious in Yangzonghai Lake. The control of pollutant sources and the treatment of sediments in the high contamination regions of Yangzonghai Lake should be implemented urgently.