Effects of pH and Eh on release of nitrogen and phosphorus from sediments of West Lake     

胡勤海  朱荫湄  宋静  李震宇  温军杰 《Journal of Zhejiang University. Science. B》2003,(3)

INTRODUCTIONAsasinkandaninnersourceofnutrients,sedimentsplayanimportantroleinlakeeutroph ication.TheeutrophicationstatusofWestLakeisstillcriticalinrecentyearsevenaftermostpollutionsourcesaroundWestLakehavebeencontrolled(Peietal.,1998) ,mainlythroughtherel…  相似文献   

Effects of pH and Eh on release of nitrogen and phosphorus from sediments of West Lake   总被引：1，自引：0，他引：1  

胡勤海  朱荫湄  宋静  李震宇  温军杰 《浙江大学学报(A卷英文版)》2003,4(3)

The effects of pH and Eh on release of nitrogen and phosphorus from sediments of West Lake under different conditions were investigated by simulation test. Results showed that the net flux of NH4+-N release from sediments increased with pH, but NO3--N showed negative-going release at all tested pH levels. The net flux of NH4+-N release from sediments was higher under anaerobic or aerobic condition of the overlying water, but only under aerobic condition would net release of NO3--N occur. It was also shown that phosphorus released was mainly in its inorganic form, higher pH and anaerobic conditions of overlying water greatly stimulated release of phosphorus. In situ measurement at several West Lake locations indicated that sediment resuspension induced by boat propeller stimulated nutrients release from sediment into overlying water.  相似文献