Geochemical characteristics of dissolved heavy metals in Zhujiang River, Southwest China: spatial-temporal distribution, source, export flux estimation, and a water quality assessment.

ABSTRACT: To investigate the sources and spatial-temporal distribution of dissolved heavy metals in river water, and to evaluate the water quality, a total of 162 water samples were collected from 81 key sampling points in high and low flow seasons separately in the Zhujiang River, Southwest China. Ten dissolved heavy metals (V, Cr, Mn, Co, Ni, Cu, Mo, Cd, Ba, and Pb) in the Zhujiang River water exhibit little variation at temporal scale, but vary with a significant spatial heterogeneity. Furthermore, different metals present different variation trends along the main channel of the Zhujiang River. Our results suggest that Ba (14.72 μg L^-1 in low flow season and 12.50 μg L^-1 in high flow season) and Cr (6.85 μg L^-1 in low flow season and 7.52 μg L^-1 in high

SUBMITTER: Zeng J 

PROVIDER: S-EPMC6420802 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature