NDLI: Phosphate adsorption characteristics at the sediment–water interface and phosphorus fractions in Nansi Lake, China, and its main inflow rivers

Content Provider	Springer Nature Link
Author	An, W. C. Li, X. M.
Copyright Year	2008
Abstract	Phosphorus fractions and phosphate adsorption characteristics of 16 sediments from a shallow freshwater lake (Nansi Lake, China) and its inflow estuaries were investigated. In the present study, the sediment phosphorus is fractionated into exchangeable P (exch-P), Al–P, Fe–P, Ca–P, organic P (OP), inorganic P (IP) and total P (TP). The results show that the total phosphorus (TP) content in the sediments ranges from 571.67 to 1,113.55 mg kg−1, and calcium bound phosphorus (Ca–P) is the main fraction of IP. The biologically available phosphorus (BAP) ranges from 32.02 to 229.67 mg kg−1 in the Nansi Lake sediments. Phosphate adsorption on the sediments mainly occurs within 10 h and is completed within 48 h. The content of native adsorbed phosphorus (ωNAP) varies greatly from 6.05 to 194.37 mg kg−1, showing a significant correlation with the total maximal amount of phosphorus adsorbed (TQmax). Adsorption efficiency (m) ranges from 574.79 to 3,220.68 l kg−1 and zero equilibrium phosphorus concentration (CEPC) ranges from 0.010 to 0.157 mg l−1. After the South-to-North Water Diversion Project, the inherent phosphorus present in sediments will be a major threat to the diverted water quality and be a predominant factor determining the trophic status of the lake even if the external load is reduced.
Starting Page	173
Ending Page	184
Page Count	12
File Format	PDF
ISSN	01676369
Journal	Environmental Monitoring and Assessment
Volume Number	148
Issue Number	1-4
e-ISSN	15732959
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-03-15
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Inflow rivers Nansi Lake Phosphate adsorption Phosphorus fractions Sediment Environmental Management Ecology Atmospheric Protection/Air Quality Control/Air Pollution Ecotoxicology
Content Type	Text
Resource Type	Article
Subject	Pollution Medicine Management, Monitoring, Policy and Law

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