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Vertical distribution and release characteristics of phosphorus forms in the sediments from the river inflow area of Dianchi Lake, China.
- Source :
-
Chemical Speciation & Bioavailability . December 2018, Vol. 30 Issue 1, p14-22. 9p. - Publication Year :
- 2018
-
Abstract
- Columnar sediment samples were collected from five representative river inflow areas of Dianchi Lake, China. The vertical distribution of each form of P were tested. Results showed that the concentration of TP in the sediments from areas A, B, C, D and E in the order of D > B > A > C > E, and the average concentration of D, B, A, C and E were 2991, 2064, 1308, 879, and 759 mg•kg−1, respectively. The concentration of Ex-P, Fe/Al-P, Ca-P and Org-P all decreased with increasing depth. The release of Ex-P was significantly related to TP whereas the Fe/Al-P was not significantly related to TP in the samples from areas polluted by domestic sewage. However, the release of Ex-P and Fe/Al-P were both significantly related to TP in the samples from areas polluted by phosphate mining and phosphate fertilizer application. The results of equilibrium P concentration (EPC0) analysis showed that P in the sediments of areas A, D and E were the source of P in Dianchi Lake, and the P in the sediments of areas B and C were in relative equilibrium with the overlying water. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09542299
- Volume :
- 30
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Chemical Speciation & Bioavailability
- Publication Type :
- Academic Journal
- Accession number :
- 133291144
- Full Text :
- https://doi.org/10.1080/09542299.2018.1446766