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

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 (omega(NAP)) varies greatly from 6.05 to 194.37 mg kg(-1), showing a significant correlation with the total maximal amount of phosphorus adsorbed (TQ(max)). Adsorption efficiency (m) ranges from 574.79 to 3,220.68 l kg(-1) and zero equilibrium phosphorus concentration (C(EPC)) 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.

Citing Articles

Distribution characteristics and pollution risk evaluation of the nitrogen and phosphorus species in the sediments of Lake Erhai, Southwest China.

Pan X, Lin L, Huang Z, Liu M, Dong L, Chen J Environ Sci Pollut Res Int. 2019; 26(22):22295-22304.

PMID: 31152427 DOI: 10.1007/s11356-019-05489-0.

Aquatic plant debris changes sediment enzymatic activity and microbial community structure.

Xue W, Pan W, Lu Q, Xu Q, Wu C, Du S Environ Sci Pollut Res Int. 2018; 25(22):21801-21810.

PMID: 29796882 DOI: 10.1007/s11356-018-2310-x.

Analysis of point source pollution and water environmental quality variation trends in the Nansi Lake basin from 2002 to 2012.

Wang W, Liu X, Wang Y, Guo X, Lu S Environ Sci Pollut Res Int. 2015; 23(5):4886-97.

PMID: 26545892 DOI: 10.1007/s11356-015-5625-x.

Distribution and accumulation of polycyclic aromatic hydrocarbons (PAHs) in the food web of Nansi Lake, China.

Zhang G, Pan Z, Wang X, Mo X, Li X Environ Monit Assess. 2015; 187(4):173.

PMID: 25762425 DOI: 10.1007/s10661-015-4362-4.

Study on heavy metal levels and its health risk assessment in some edible fishes from Nansi Lake, China.

Zhu F, Qu L, Fan W, Wang A, Hao H, Li X Environ Monit Assess. 2015; 187(4):161.

PMID: 25740685 DOI: 10.1007/s10661-015-4355-3.

References

1.

Zhou Q, Gibson C, Zhu Y . Evaluation of phosphorus bioavailability in sediments of three contrasting lakes in China and the UK. Chemosphere. 2001; 42(2):221-5. DOI: 10.1016/s0045-6535(00)00129-6. View

2.

Kim L, Choi E, Stenstrom M . Sediment characteristics, phosphorus types and phosphorus release rates between river and lake sediments. Chemosphere. 2003; 50(1):53-61. DOI: 10.1016/s0045-6535(02)00310-7. View

3.

Wang S, Jin X, Pang Y, Zhao H, Zhou X, Wu F . Phosphorus fractions and phosphate sorption characteristics in relation to the sediment compositions of shallow lakes in the middle and lower reaches of Yangtze River region, China. J Colloid Interface Sci. 2005; 289(2):339-46. DOI: 10.1016/j.jcis.2005.03.081. View

4.

Kaiserli A, Voutsa D, Samara C . Phosphorus fractionation in lake sediments--lakes Volvi and Koronia, N. Greece. Chemosphere. 2002; 46(8):1147-55. DOI: 10.1016/s0045-6535(01)00242-9. View

5.

Zhang T, Wang X, Jin X . Variations of alkaline phosphatase activity and P fractions in sediments of a shallow Chinese eutrophic lake (Lake Taihu). Environ Pollut. 2007; 150(2):288-94. DOI: 10.1016/j.envpol.2007.01.007. View

Phosphate Adsorption Characteristics at the Sediment-water Interface and Phosphorus Fractions in Nansi Lake, China, and Its Main Inflow Rivers