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Abstract

Environmental Analysis & Ecology Studies

Phosphorus Speciation in the Pearl River Estuary of South China

  • Open or CloseChengyu Chen*

    College of Natural Resources and Environment, South China Agricultural University, China

    *Corresponding author: Chengyu Chen, College of Natural Resources and Environment, South China Agricultural University, Wushan Road, Guangzhou, Guangdong 510642, People’s Republic of China

Submission: June 18, 2018; Published: August 16, 2018

DOI: 10.31031/EAES.2018.04.000575

ISSN 2578-0336
Volume3 Issue5

Abstract

Based on information of chemical properties in the water samples in the Pearl River Estuary in South China in prior studies, the speciation of phosphorus in water samples from four sampling sites was calculated and modelled by a MINEQL+4.6 Software, in an effort to quantify the likelihood and reason of eutrophication and algal bloom in the local aquatic environment. Results showed that the dominant forms of phosphorus in local water are hydroxylapatite and H2PO4-, with the minor forms being HPO4 2- and CaHPO4. The total dissolved phosphate is 4.55, 4.59, 7.06, and 7.93, 10-6mol/L for Zones A to D, respectively. Increasing Ca2+ concentration leads to precipitation and removal of phosphorus from water, but its concentration will need to be increased by 9, 10, 14.7, and 13.8 times, respectively, in Zones A to D in order to prevent eutrophication and subsequent algal blooms [1].

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