文献类型：期刊文献

中文题名：河北衡水湖湿地汞污染现状及生态风险评价

英文题名：Contamination and Ecological Risk Assessment of Mercury in Hengshuihu Wetland,Hebei Province

作者：王乃姗[1,2,3] 张曼胤[1,2,3] 崔丽娟[1,2,3] 马牧源[1,2,3] 颜亮[1,2,3] 穆泳林[1,2,3] 秦鹏[1,2,3]

第一作者：王乃姗

通信作者：Zhang, Man-Yin|[a00051fe3588fbc8d8c88]张曼胤;

机构：[1]中国林业科学研究院湿地研究所;[2]北京汉石桥湿地生态系统国家定位观测研究站;[3]河北衡水湖湿地生态系统定位观测研究站

年份：2016

卷号：0

期号：5

起止页码：1754-1762

中文期刊名：环境科学

外文期刊名：Environmental Science

收录：MEDLINE(收录号：27506028);CSTPCD;;EI(收录号：20162202440185);Scopus(收录号：2-s2.0-84969752582);北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；PubMed;

基金：中央级公益性科研院所基本科研业务费专项(CAFINT2014K05)

语种：中文

中文关键词：衡水湖湿地;汞;污染现状;分布特征;生态风险

外文关键词：Hengshuihu wetland; mercury; contamination status; distribution characteristics; ecological risk

分类号：X524;X820.4

摘要：以河北衡水湖湿地为调查对象,采用均匀设点采样分析,研究了衡水湖湿地大气、表层水和土壤/沉积物中总汞含量及其分布特征;同时采用地积累指数法和潜在生态风险指数法进行衡水湖湿地汞污染的生态风险评价.结果表明:衡水湖湿地大气总汞含量变化范围为1.0~5.0 ng·m^(-3),平均值为(2.9±0.85)ng·m^(-3);表层水总汞含量变化范围为0.010~0.57μg·L^(-1),平均值为(0.081±0.053)μg·L^(-1);土壤/沉积物总汞含量变化范围为0.001 0~0.058 mg·kg^(-1),平均值为(0.027±0.013)mg·kg^(-1).衡水湖湿地汞污染分布特征为,表层水总汞浓度岸边显著高于湖中(P<0.05),湖中沉积物总汞浓度显著高于岸边土壤(P<0.05);岸边大气总汞浓度与土壤总汞浓度呈正相关关系;高浓度汞富集总伴随剧烈的人为活动.地积累指数法表明衡水湖湿地地区汞污染为清洁程度;潜在生态风险指数法表明衡水湖湿地地区汞污染风险为低生态风险.
Investigation on the concentrations and the distribution characteristics of total mercury in atmosphere,water surface and soil/sediments of Hengshuihu wetland was carried out based on a uniform set point sampling method. The geoaccumulation index and potential ecological risk index methods were simultaneously used to assess the mercury pollution in Hengshuihu wetland ecosystem. The results showed that： the total mercury content in Hengshuihu wetland atmosphere ranged from 1. 0 to 5. 0 ng·m^-3,with an average of（ 2. 9 ± 0. 85） ng·m^-3; the total mercury content in water surface ranged from 0. 010 to 0. 57 μg·L^-1,with the average value of（ 0. 081 ± 0. 053） μg·L^-1; the total mercury content in soil/sediment ranged from 0. 001 0 to 0. 058 mg·kg^-1,with an average of（ 0. 027 ± 0. 013） mg·kg^-1. The distribution features of total mercury in Hengshuihu wetland were as follows： the total mercury concentration in surface water of the shore was significantly higher than that in the center（ P〈0. 05）,but the total mercury concentration of sediments in the center of the lake was significantly higher than that at the shore（ P〈0. 05）; the total mercury in the soil of shore had a consistent trend with that in the atmosphere; high concentrations of total mercury pollution were accompanied by severe human activities. The geoaccumulation index showed that mercury pollution in Hengshuihu wetland was at clean level; potential ecological risk index showed mercury contamination had a low ecological risk in Hengshuihu wetland.