期刊论文

中文

湖泊科学

1003-5427

2011

23

5

695-700

10.18307/2011.0505

2006FYl10600:国家科技基础性工作专项 973;2012CB417004:国家重点基础研究发展计划（973计划）

本校为其他机构

本文研究了洞庭湖平原10个中小型湖泊沉积物砷的空间分布特征，并采用地累积指数法对其污染进行了评价．结果表明:各湖表层沉积物中砷浓度在10．1 33．7 mg/kg之间变化，平均值为15．8 mg/kg，砷含量水平较低;在空间上表层沉积物中砷含量次序为岳阳南湖＞芭蕉湖＞黄盖湖＞安乐湖＞毛里湖＞柳叶湖＞东湖＞珊珀湖＞大通湖＞北民湖，表现为澧水水系湖泊(均值13．1 mg/kg)和藕池河水系湖泊(均值13．4 mg/kg)＜沅水水系湖泊(均值16．2 mg/kg)＜洞庭湖湖口附近湖泊(均值22．4 mg/kg)，基本遵循从洞庭湖水系上游到下游逐渐加重的趋势;大通湖、黄盖湖、芭蕉湖和珊珀湖4个湖泊柱状样数据显示洞庭湖区中小...

Spatial distribution of arsenic （As） concentrations of sediments collected form ten medium-small scale lakes in Lake Dongting Plain was investigated, and the As pollution degree was evaluated using the geo-accumulation index. Average value of As sediment concentration from 10 lakes was 15.8 mg/kg, which varied from 10.1 to 33.7 mg/kg. It indicated that As sediment con- tamination was relative low. As to spatial distributions, the average contents of As in the superficial sediments were from high to low in the sequence of Yueyang South Lake, B...