Study on Water Quality Assessment of Urban River

Liu Lu, C. Liang, G. Pin, Chen Gang
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引用次数: 1

Abstract

The paper presents the principle and calculation process of the principal component analysis which is a useful method of water quality assessment. Eight indicators include dissolved oxygen, permanganate index, BOD, ammonia nitrogen, copper, zinc, volatile phenol, oil in 20 monitoring sections of Ningbo urban river were analyzed by using principal component analysis. Three factors with 86.67% of accumulated contribution rates were extracted from the original data, which include organic matter factor, heavy metal matter factor, ammonia nitrogen and volatile phenol factor. The results show that 50% water sections can¡¯t reach the standards, most of them located in Yinzhou River, YinRiver and Fenghua River. The results consist with the actual situation.
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城市河流水质评价研究
本文介绍了主成分分析法的原理和计算过程,这是一种有效的水质评价方法。采用主成分分析法对宁波市城区河流20个监测断面的溶解氧、高锰酸盐指数、BOD、氨氮、铜、锌、挥发性酚、油8项指标进行了分析。从原始数据中提取出累积贡献率达86.67%的3个因子,分别为有机质因子、重金属物质因子、氨氮因子和挥发性酚因子。结果表明,有50%的水段达不到标准,其中以鄞州河、鄞河和丰华河的水段居多。结果与实际情况相符。
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