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DGT induced fluxes in sediments model for the simulation of phosphorus process and the assessment of phosphorus release risk.
Environ Sci Pollut Res Int. 2016 Jul; 23(14):14608-20.ES

Abstract

Diffusive gradients in thin films (DGT)-induced flux in sediments (DIFS) (DGT-DIFS) model for phosphorus (P) has been investigated to provide a numerical simulation of a dynamic system of the DGT-pore water-sediment in Dianchi Lake (China). Kinetic parameter-T C (33-56,060 s), distribution coefficient-K d (134.7-1536 cm(3)g(-1)), and resupply parameter-R (0.189-0.743) are derived by DGT measurement, the sediment/pore water test, and the DIFS model. The changes of dissolved concentration in DGT diffusive layer and pore water and sorbed concentration in sediment, as well as the ratio of C DGT and the initial concentration in pore water (R) and mass accumulated by DGT resin (M) at the DGT-pore water-sediment interface (distance) of nine sampling sites during DGT deployment time (t) are derived through the DIFS simulation. Based on parameter and curves derived by the DIFS model, the P release-transfer character and mechanism in sediment microzone were revealed. Moreover, the DGT-DIFS parameters (R, T C , K -1 , C DGT), sediment P pool, sediment properties (Al and Ca), and soluble reactive P (SRP) in overlying water can be used to assess "P eutrophication level" at different sampling sites with different types of "external P loading." The DGT-DIFS model is a reliable tool to reveal the dynamic P release in sediment microzone and assess "internal P loading" in the plateau lake Dianchi.

Authors+Show Affiliations

State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China. State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-environment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China. Dongtinghu Lake Ecological Observation and Research Station (DEORS), Yueyang, Hunan Province, 41400, People's Republic of China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China. wangsr@craes.org.cn. State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-environment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China. wangsr@craes.org.cn. Dongtinghu Lake Ecological Observation and Research Station (DEORS), Yueyang, Hunan Province, 41400, People's Republic of China. wangsr@craes.org.cn.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China. State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-environment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China. Dongtinghu Lake Ecological Observation and Research Station (DEORS), Yueyang, Hunan Province, 41400, People's Republic of China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China. State Environmental Protection Key Laboratory for Lake Pollution Control, Research Center of Lake Eco-environment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China. Dongtinghu Lake Ecological Observation and Research Station (DEORS), Yueyang, Hunan Province, 41400, People's Republic of China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27068919

Citation

Wu, Zhihao, et al. "DGT Induced Fluxes in Sediments Model for the Simulation of Phosphorus Process and the Assessment of Phosphorus Release Risk." Environmental Science and Pollution Research International, vol. 23, no. 14, 2016, pp. 14608-20.
Wu Z, Wang S, Zhang L, et al. DGT induced fluxes in sediments model for the simulation of phosphorus process and the assessment of phosphorus release risk. Environ Sci Pollut Res Int. 2016;23(14):14608-20.
Wu, Z., Wang, S., Zhang, L., & Jiao, L. (2016). DGT induced fluxes in sediments model for the simulation of phosphorus process and the assessment of phosphorus release risk. Environmental Science and Pollution Research International, 23(14), 14608-20. https://doi.org/10.1007/s11356-016-6651-z
Wu Z, et al. DGT Induced Fluxes in Sediments Model for the Simulation of Phosphorus Process and the Assessment of Phosphorus Release Risk. Environ Sci Pollut Res Int. 2016;23(14):14608-20. PubMed PMID: 27068919.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - DGT induced fluxes in sediments model for the simulation of phosphorus process and the assessment of phosphorus release risk. AU - Wu,Zhihao, AU - Wang,Shengrui, AU - Zhang,Li, AU - Jiao,Lixin, Y1 - 2016/04/12/ PY - 2015/12/27/received PY - 2016/04/05/accepted PY - 2016/4/13/entrez PY - 2016/4/14/pubmed PY - 2017/4/14/medline KW - DGT induced flux in sediments (DIFS) KW - Diffusive gradients in thin films (DGT) KW - External P loading KW - Internal P loading KW - Phosphorus (P) SP - 14608 EP - 20 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 23 IS - 14 N2 - Diffusive gradients in thin films (DGT)-induced flux in sediments (DIFS) (DGT-DIFS) model for phosphorus (P) has been investigated to provide a numerical simulation of a dynamic system of the DGT-pore water-sediment in Dianchi Lake (China). Kinetic parameter-T C (33-56,060 s), distribution coefficient-K d (134.7-1536 cm(3)g(-1)), and resupply parameter-R (0.189-0.743) are derived by DGT measurement, the sediment/pore water test, and the DIFS model. The changes of dissolved concentration in DGT diffusive layer and pore water and sorbed concentration in sediment, as well as the ratio of C DGT and the initial concentration in pore water (R) and mass accumulated by DGT resin (M) at the DGT-pore water-sediment interface (distance) of nine sampling sites during DGT deployment time (t) are derived through the DIFS simulation. Based on parameter and curves derived by the DIFS model, the P release-transfer character and mechanism in sediment microzone were revealed. Moreover, the DGT-DIFS parameters (R, T C , K -1 , C DGT), sediment P pool, sediment properties (Al and Ca), and soluble reactive P (SRP) in overlying water can be used to assess "P eutrophication level" at different sampling sites with different types of "external P loading." The DGT-DIFS model is a reliable tool to reveal the dynamic P release in sediment microzone and assess "internal P loading" in the plateau lake Dianchi. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/27068919/DGT_induced_fluxes_in_sediments_model_for_the_simulation_of_phosphorus_process_and_the_assessment_of_phosphorus_release_risk_ DB - PRIME DP - Unbound Medicine ER -