摘要
将太原市汾河支流南沙河(建设路以西、滨河路以东)河段按照进水到出水的方向划分四个断面,采用平板菌落计数法测定四个断面水体微生物类群;采用碱性过硫酸钾消解紫外分光光度法、钼酸铵分光光度法、火焰原子吸收分光光度法,测定四个断面水体中污染物含量;利用综合污染指数法评价南沙河水质;采用SPSS15.0统计分析软件,分析南沙河污染物总氮(TN)、总磷(TP)、Cd、Cr和Pb与细菌、真菌、放线菌的相关性。结果表明:南沙河各类群微生物数量依次为:细菌>真菌>放线菌;污染物的含量为TN>TP>Pb>Cr>Cd;其污染指数均大于1,超过了太原市地表水各水体执行标准,为国家地表水Ⅴ类水;污染负荷比依次为TP>Pb>TN>Cr>Cd;四个断面S1、S2、S3和S4的水质综合指数分别为10.4007、10.9775、10.0878和9.6713,污染严重程度为S2>S1>S3>S4;相关性研究结果表明,南沙河水体中的细菌、真菌与水体中的污染物TN和TP含量呈显著正相关(P<0.01),与Cr和Pb含量呈显著负相关(P<0.01)。水体中的污染物Cd含量与细菌(P<0.01)、真菌(P<0.05)呈显著负相关。水体中的放线菌与污染物TN含量呈显著正相关(P<0.01),与重金属Cd、Cr和Pb含量为显著负相关(P<0.05)。但放线菌与TP相关不显著。TN含量与重金属Cd含量(P<0.01)、Cr含量及TP含量与重金属Cd、Cr含量之间(P<0.05)呈显著负相关。
The Nansha River, a branch of Fenhe River located in west of Jianshe Road and east of Binhe Road in Taiyuan, was seperated into four sections according to the flow direction. The plate colony -counting method was used to determine the microbial groups in the four sections; alkaline potassium pursulfate digestion- UV spectrophotometric method, ammonium molybdate spectrophotometric method and FAAS were adopted to determine the concentration of water pollutants of the four sections ; the comprehensive pollution in- dex method was taken to assess the water quality of Nansha River; the correlations between pollutants （TN, TP, Cd, Cr and Pb） and bacteria, eumycota and actinomycetes were also analyzed by SPSS15.0 software. The results showed that the microorganism quantity of Nansha River was ordered as bacteria 〉 eumycota 〉 actinomycetes ; the concentration of pollutants was ordered as TN 〉 TP 〉 Pb 〉 Cr 〉 Cd ; the pollution index was larger than 1, which was more than the surface water standards in Taiyuan city, belonging to V - level of na- tional surface water; the pollution load ratio was ordered as TP 〉 Pb 〉 TN 〉 Cr 〉 Cd ; the water quality compre- hensive indeies of the four sections （S1, $2, $3 and $4） were 10.4007. 10. 9775. 10.0878 and 9.6713 respectively, and the pollution situation was ordered as $2 〉 S1 〉 $3 〉 $4. Moreover, the correlation analysis in- dicated that significant positive correlations existed between TN, TP （ P 〈 O. 01 ） and bacteria, eumycota, wh- lie significant negative correlations existed between Cd, Cr, Pb （ P 〈 0.01 ） and bacteria, eumycota. The sig- nificant negative correlations existed between Cd and bacteria （ P 〈 0.01 ） and eumycota （ P 〈 0.05 ）. The significant positive correlations existed between TN （P 〈 0.01 ） and actinomycetes, while significant negative correlations existed between Cd, Cr, Pb （ P 〈 0.05 ） and actinomycetes. There were no significant correla- tions between actinomycetes and TP. There were significant negative correlations between pollutants TN, TP and heavy metal Cd, Cr, Pb.
出处
《山东农业科学》
2013年第3期83-87,90,共6页
Shandong Agricultural Sciences
基金
太原市环境保护局研究项目([2010]234)
关键词
南沙河
微生物
污染物
综合污染指数法
相关性
The Nansha River
Microbial
Pollutant
Comprehensive pollution index method
Correlation
