【摘要】 本文根据1985年7月洪水期长江口南港河段水文、水质同步调查所提供的水质底质资料将二者综合进行多要素的环境质量评价,因该区段水质中的铜全部超标,故采用含铜和不含铜两种情况进行对比,各污染物权重值根据P_ij主成分——因子分析法加以确定.评价结果表明,该区段水质底质大部分介于尚清洁和微污染.局部地区出现轻污染,较客观地反映了实际情况.更多还原

【Abstract】 This paper based on the simultaneous field investigation of hydrology and water environment during the flood season in July, 1985 in the River Part of Nangang in the Yangtze Estuary, deals with the multi-factor environmental quality comprehensive assessments with consideration of water quality and sedimentary quality.The assessments including index Cu and the assessments with no consideration of index Cu are compared due to the over-standard of index Cu contained in all water samples.The contaminant weights are determined using P_ij Principal Component-Factor Analysis method.The results show that the main parts of the study area are clean or slightly polluted, and only few parts are found to be lightly polluted.It tallies with the actual conditions.更多还原