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[Phosphorus fractions, sorption characteristics and its release in the sediments of Yangtze Estuary Reservoir, China].
Huan Jing Ke Xue. 2015 Feb; 36(2):448-56.HJ

Abstract

To analyze the sediment phosphorus (P) fractions and sorption characteristics and P release from sediment of reservoir in Yangtze estuary, the sediment was investigated during April, 2011 to January, 2012. Results of chemical fractionation analysis showed that total P (TP) content in sediment ranged from 535.07 to 910.9 mg x kg(-1), inorganic P (IP) was a dominant component of TP and the content of organic P (OP) was low. IP presented in the form of P bounded to calcium (HCl-P) and dominated 75.57% of TP. The batch experiments showed that sediments had the maximum P adsorption capacity from 9.78 to 39.84 mg x kg(-1), sorption data fitted the modified Langmuir isotherm model. However, EPC0 (equilibrium phosphorus concentration) in all sampling sites was higher than the soluble-reactive P concentration in water column, which was from 0.024-0.12 mg x L(-1). Accordingly, the sediments from those sampling sites would release phosphorus into the overlying water as a P release source. The maximum released amount from sediment was 11.03 mg x kg(-1) about 6 hours. Correlation between P released amount and NaOH-P was found (P < 0.01), and sediment P release would mainly originate from the NaOH-P, OP and HCl-P fraction. It is evident that the inherent phosphorus present in sediments would be a major threat to the water quality in Yangtze River estuary reservoir.

Authors

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Pub Type(s)

Journal Article

Language

chi

PubMed ID

26031069

Citation

Jin, Xiao-Dan, et al. "[Phosphorus Fractions, Sorption Characteristics and Its Release in the Sediments of Yangtze Estuary Reservoir, China]." Huan Jing Ke Xue= Huanjing Kexue, vol. 36, no. 2, 2015, pp. 448-56.
Jin XD, Wu H, Chen ZM, et al. [Phosphorus fractions, sorption characteristics and its release in the sediments of Yangtze Estuary Reservoir, China]. Huan Jing Ke Xue. 2015;36(2):448-56.
Jin, X. D., Wu, H., Chen, Z. M., Song, H. J., & He, Y. L. (2015). [Phosphorus fractions, sorption characteristics and its release in the sediments of Yangtze Estuary Reservoir, China]. Huan Jing Ke Xue= Huanjing Kexue, 36(2), 448-56.
Jin XD, et al. [Phosphorus Fractions, Sorption Characteristics and Its Release in the Sediments of Yangtze Estuary Reservoir, China]. Huan Jing Ke Xue. 2015;36(2):448-56. PubMed PMID: 26031069.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Phosphorus fractions, sorption characteristics and its release in the sediments of Yangtze Estuary Reservoir, China]. AU - Jin,Xiao-Dan, AU - Wu,Hao, AU - Chen,Zhi-Ming, AU - Song,Hong-Jun, AU - He,Yi-Liang, PY - 2015/6/3/entrez PY - 2015/6/3/pubmed PY - 2015/7/15/medline SP - 448 EP - 56 JF - Huan jing ke xue= Huanjing kexue JO - Huan Jing Ke Xue VL - 36 IS - 2 N2 - To analyze the sediment phosphorus (P) fractions and sorption characteristics and P release from sediment of reservoir in Yangtze estuary, the sediment was investigated during April, 2011 to January, 2012. Results of chemical fractionation analysis showed that total P (TP) content in sediment ranged from 535.07 to 910.9 mg x kg(-1), inorganic P (IP) was a dominant component of TP and the content of organic P (OP) was low. IP presented in the form of P bounded to calcium (HCl-P) and dominated 75.57% of TP. The batch experiments showed that sediments had the maximum P adsorption capacity from 9.78 to 39.84 mg x kg(-1), sorption data fitted the modified Langmuir isotherm model. However, EPC0 (equilibrium phosphorus concentration) in all sampling sites was higher than the soluble-reactive P concentration in water column, which was from 0.024-0.12 mg x L(-1). Accordingly, the sediments from those sampling sites would release phosphorus into the overlying water as a P release source. The maximum released amount from sediment was 11.03 mg x kg(-1) about 6 hours. Correlation between P released amount and NaOH-P was found (P < 0.01), and sediment P release would mainly originate from the NaOH-P, OP and HCl-P fraction. It is evident that the inherent phosphorus present in sediments would be a major threat to the water quality in Yangtze River estuary reservoir. SN - 0250-3301 UR - https://www.unboundmedicine.com/medline/citation/26031069/[Phosphorus_fractions_sorption_characteristics_and_its_release_in_the_sediments_of_Yangtze_Estuary_Reservoir_China]_ DB - PRIME DP - Unbound Medicine ER -