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Synergetic loss of heavy metal and phosphorus: Evidence from geochemical fraction and estuary sedimentation by Yidi Wang; Wei Ouyang; Aihua Wang; Lianhua Liu; Chunye Lin; Mengchang He is a Environmental Science article available to read on EtoBox.

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The synergetic loss mechanism of heavy metals (HMs) and phosphorus (P), as well as the relationships between their different geochemical fractions remain unclear. This study employs field research, source identification and sedimentary geochemistry in Yellow River basin to investigate the internal mechanisms of the different geochemical fractions, terrestrial source signatures, and synergetic loss fluxes. The average contents of As, Cd, Cr, Cu, Pb, Zn and P in the basin were 8.29 mg/kg, 0.15 mg/kg, 47.52 mg/kg, 11.78 mg/kg, 10.65 mg/kg, 46.56 mg/kg and 578.78 mg/kg, respectively. Based on Pearson's correlation and redundancy analyses, the impact factors on the transport of HMs and P, and the internal relationships between different geochemical fractions were analyzed. According to the constant rate of supply (CRS) model, the terrestrial losses of As, Cd, Cr and Cu showed significant positive relationships with the TP flux, with r 2 value of 0.981, 0.991, 0.996 and for 0.984, respectively. It has been proven that the extensive fine particles in the Yellow River basin carry a large amount of diffuse pollutants, thus ultimately increasing the estuarine pollutant load. This research pr

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Author

Yidi Wang; Wei Ouyang; Aihua Wang; Lianhua Liu; Chunye Lin; Mengchang He

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Environmental Science (Physical Sciences)