摘要
采用主成分分析法,结合SPSS分析软件,对金沙江流域攀枝花段各监测断面(对照断面、控制断面及出境断面)在非讯水期和讯水期水体中的TN、TP、DO、CODCr、CODMn、NH3-N、BOD5等7项监测指标进行分析,对金沙江攀枝花段水质进行了综合评价。结果表明:1金沙江攀枝花段水体主要受有机污染,且NH3-N、BOD5、CODCr为主要特征污染物;2不同水期,各断面水体主要污染物不同;3各监测断面在讯水期的水质污染情况比在非讯水期的水质污染程度大,且倮果(控制断面)水质污染程度较其他断面水质污染程度大;4与综合污染指数法相比,主成分分析法是一种较可靠且较实际的水质评价方法。
With the help of SPSS software,the TP、TN、NH3 -N、BOD5、CODMn、CODCr and DO from three monitoring sites of Panzhihua section in Jinshajiang River from November 2013 to October 2014 were analyzed and calculated using the principal component analysis method.The results showed that the major pollution indictors were NH3 -N,BOD5 and CODCr.Organic pollution was serious in Jinshajiang River.The comprehensive assess-ment indicated that the pollution degree in flood period was higher than that in normal river flow period.The pollu-tion degree of Controlled Section was the highest.Compared with comprehensive pollution index method,the prin-cipal component analysis was a more effective method to evaluate the water quality.
出处
《环境科学导刊》
2016年第2期61-66,共6页
Environmental Science Survey
关键词
主成分分析法
SPSS
水质评价
综合污染指数法
金沙江
principal components analysis
SPSS
water quality assessment
comprehensive pollution index
Jinshajiang River
