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Bioavailability of organic phosphorus in the water level fluctuation zone soil and the effects of ultraviolet irradiation on it in the Three Gorges Reservoir, China.
Sci Total Environ. 2020 Oct 10; 738:139912.ST

Abstract

Ultraviolet (UV) irradiation is an abiotic pathway for the transformation of complex phosphorus (P) components into inorganic P in ecosystems. To explore the effect of UV irradiation on organic P (OP) bioavailability in the water level fluctuation zone (WLFZ) soil, we collected representative soil samples from WLFZ of the Pengxi River, a tributary of the TGR, China. We determined the contents of different forms of OP in the WLFZ soil through sequential extraction. The bioavailability of different forms of OP and the effect of UV light were characterised using a combination of enzymatic hydrolysis and UV irradiation. The OP contents of the different extracts (Po) were ranked as NaOH-Po > NaHCO3-Po > H2O-Po, whereas those of enzymatically hydrolysable organic P (EHP) were ranked as NaOH-EHP > NaHCO3-EHP > H2O-EHP. UV irradiation was found to improve OP bioavailability, as demonstrated by increased levels of UV-sensitive P (UV-P) and EHP in the extracts after irradiation. The total contents of bioavailable Po in extracts were 5.6-35.3% higher after UV irradiation than before irradiation. Thus, the effect of UV irradiation on the OP bioavailability and release activity cannot be neglected in TGR WLFZ soil.

Authors+Show Affiliations

Key Laboratory of the Three Gorges Reservoir Region's EcoEnvironments of MOE, Chongqing University, Chongqing 400045, China.Key Laboratory of the Three Gorges Reservoir Region's EcoEnvironments of MOE, Chongqing University, Chongqing 400045, China.Key Laboratory of the Three Gorges Reservoir Region's EcoEnvironments of MOE, Chongqing University, Chongqing 400045, China.Key Laboratory of the Three Gorges Reservoir Region's EcoEnvironments of MOE, Chongqing University, Chongqing 400045, China. Electronic address: fangfangcq@cqu.edu.cn.Key Laboratory of the Three Gorges Reservoir Region's EcoEnvironments of MOE, Chongqing University, Chongqing 400045, China.Key Laboratory of the Three Gorges Reservoir Region's EcoEnvironments of MOE, Chongqing University, Chongqing 400045, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32531607

Citation

Gao, Jun-Min, et al. "Bioavailability of Organic Phosphorus in the Water Level Fluctuation Zone Soil and the Effects of Ultraviolet Irradiation On It in the Three Gorges Reservoir, China." The Science of the Total Environment, vol. 738, 2020, p. 139912.
Gao JM, Chen ZM, Wang C, et al. Bioavailability of organic phosphorus in the water level fluctuation zone soil and the effects of ultraviolet irradiation on it in the Three Gorges Reservoir, China. Sci Total Environ. 2020;738:139912.
Gao, J. M., Chen, Z. M., Wang, C., Fang, F., Huang, J. J., & Guo, J. S. (2020). Bioavailability of organic phosphorus in the water level fluctuation zone soil and the effects of ultraviolet irradiation on it in the Three Gorges Reservoir, China. The Science of the Total Environment, 738, 139912. https://doi.org/10.1016/j.scitotenv.2020.139912
Gao JM, et al. Bioavailability of Organic Phosphorus in the Water Level Fluctuation Zone Soil and the Effects of Ultraviolet Irradiation On It in the Three Gorges Reservoir, China. Sci Total Environ. 2020 Oct 10;738:139912. PubMed PMID: 32531607.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bioavailability of organic phosphorus in the water level fluctuation zone soil and the effects of ultraviolet irradiation on it in the Three Gorges Reservoir, China. AU - Gao,Jun-Min, AU - Chen,Zhu-Man, AU - Wang,Chao, AU - Fang,Fang, AU - Huang,Jun-Jie, AU - Guo,Jin-Song, Y1 - 2020/06/02/ PY - 2020/04/06/received PY - 2020/05/25/revised PY - 2020/06/01/accepted PY - 2020/6/13/pubmed PY - 2020/8/19/medline PY - 2020/6/13/entrez KW - Bioavailability KW - Enzymatic hydrolysis KW - Organic phosphorus KW - Ultraviolet light KW - Water level fluctuation zone SP - 139912 EP - 139912 JF - The Science of the total environment JO - Sci Total Environ VL - 738 N2 - Ultraviolet (UV) irradiation is an abiotic pathway for the transformation of complex phosphorus (P) components into inorganic P in ecosystems. To explore the effect of UV irradiation on organic P (OP) bioavailability in the water level fluctuation zone (WLFZ) soil, we collected representative soil samples from WLFZ of the Pengxi River, a tributary of the TGR, China. We determined the contents of different forms of OP in the WLFZ soil through sequential extraction. The bioavailability of different forms of OP and the effect of UV light were characterised using a combination of enzymatic hydrolysis and UV irradiation. The OP contents of the different extracts (Po) were ranked as NaOH-Po > NaHCO3-Po > H2O-Po, whereas those of enzymatically hydrolysable organic P (EHP) were ranked as NaOH-EHP > NaHCO3-EHP > H2O-EHP. UV irradiation was found to improve OP bioavailability, as demonstrated by increased levels of UV-sensitive P (UV-P) and EHP in the extracts after irradiation. The total contents of bioavailable Po in extracts were 5.6-35.3% higher after UV irradiation than before irradiation. Thus, the effect of UV irradiation on the OP bioavailability and release activity cannot be neglected in TGR WLFZ soil. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/32531607/Bioavailability_of_organic_phosphorus_in_the_water_level_fluctuation_zone_soil_and_the_effects_of_ultraviolet_irradiation_on_it_in_the_Three_Gorges_Reservoir_China_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(20)33432-X DB - PRIME DP - Unbound Medicine ER -