沱江水质现状评价与变化趋势分析  

Evaluation of Water Quality in Tuojiang River and Analysis on Its Variation Trend

作　　者：肖玖金[1,2] 李旭东[1] 王红磊 谭周亮[1] 

机构地区：[1]中国科学院成都生物研究所,四川成都610041 [2]中国科学院研究生院,北京100049 [3]四川省环境评估中心,四川成都610000

出　　处：《中国给水排水》2010年第22期119-121,共3页China Water & Wastewater

基　　金：国家高技术发展计划(863)项目(2008AA06A409);"十一五"国家科技支撑计划项目(2008BAK51B07);四川省科技支撑计划项目(2009SZ0215);中国科学院知识创新工程重要方向资助项目(KSCX2-YW-G-055)

摘　　要：收集了沱江2000年—2008年共9年的出口水质监测数据,利用内梅罗综合指数法和Spearman秩相关系数分析了沱江水质现状与变化趋势(分丰水期、枯水期、平水期和全年)。结果表明,2008年沱江出口丰水期、枯水期、平水期和全年的内梅罗综合指数均小于0.70,表明没有超标的污染项,说明沱江出口水质状况良好。对水质现状健康风险分析表明,化学致癌物是主要的风险来源,个人总年风险超过ICRP标准。变化趋势分析显示:沱江出口在丰水期、平水期和全年水质的内梅罗指数呈不显著性上升趋势,水质呈逐年不显著性变差;枯水期水质的内梅罗指数呈不显著性下降趋势,水质呈逐年不显著性好转趋势。Based on the monitoring data of water quality at the outlet of Tuojiang River from 2000 to 2008, the current situation of water quality and its variation trends during low flow period, average flow period, high flow period and whole year were analyzed using Nemerow composite index and Spearman rank correlation coefficient. The results show that the Nemerow composite index during low flow period, average flow period, high flow period and whole year at the outlet of Tuojiang River in 2008 is less than 0.70, showing the water quality is good without exceeding-standard pollution term. The present health risk analysis shows that the annual individual health risk exceeds the standards recommended by ICRP because chemical carcinogen is the main risk source. The variation trend analysis indicates that the Nerocrow composite index during average flow period, high flow period and whole year has no significant increase, and the water quality is not significantly worse year by year. The Nemerow composite index during low flow period has no significant decrease, and the water quality is not significantly better year by year.

关 键 词：沱江 水质现状 健康风险 趋势 

分 类 号：X824[环境科学与工程—环境工程]