Water Quality of Different Sectors of Yangtse River Before and After Three Gorges Reservoir Keeps 135 m Water Level
- VernacularTitle:三峡水库蓄水前后长江部分江段水质变化
- Author:
Mei XING
;
Lei BAO
- Publication Type:Journal Article
- Keywords:
Water;
Water pollution;
Environmental monitoring;
Yangtse River
- From:
Journal of Environment and Health
1992;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To know water quality of different sectors of Yangtse River after the Three Gorges reservoir kept 135 m water level. Methods Eight locations in six cities sectors(Fengdu,Wushan) of Yangtse River were selected as the monitor point and water samples were collected according to the related national standard (GB12997,1991). 96 samples were collected in May and August, 16 parameters (pH, DO, BOD5, CODCr, Ar,OH, TCN,As, Hg, Cr6+, oil, Pb, Cd, NH3,N, TP, TN, CODMn) of every sample were detected based on the methods documented in the related national standards and compared the results with the results of past years. Results 135 m water level had no significant influence on the water quality of different sectors of Yangtse River(II, III grade). Water quality had no significant change before and after 135 m water level emerged the primary contaminations which effect water quality were total nitrogen and total phosphors. Conclusion No significant change of water quality of Yangtse River has been seen after the Three Gorges reservoir kept 135 m water level.
