Hydrochemical processes controlling arsenic and selenium in the Changjiang River (Yangtze River) system

Qing Zheng Yao; Jing Zhang; Ying Wu; Hui Xiong

doi:10.1016/j.scitotenv.2007.01.088

Hydrochemical processes controlling arsenic and selenium in the Changjiang River (Yangtze River) system

Qing Zheng Yao^*
, Jing Zhang
, Ying Wu
, Hui Xiong

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

The hydrochemistry of arsenic and selenium in the Changjiang (Yangtze River) was studied, based on continuously monitored data at Nantong station (i.e. 180 km inland from river mouth), the main Changjiang channel and 10 major tributaries. The dissolved inorganic arsenic (DIAs) and selenium (DISe) concentrations of the Changjiang are related to water discharge, rock type of drain basin, anthropogenic influences etc. The DIAs and DISe levels vary over an order of magnitude throughout the basin (i.e. 6.95-68.9 nmol/L for DIAs, 1.16-9.92 nmol/L for DISe). Source rock composition is the primary control on the concentrations of DIAs and DISe in the Changjiang. Several tributaries (e.g. Xiangjiang River, Minjiang River and Tuojiang River) are contaminated by human activities. Flux calculations from hydrographic data at Datong (the most downstream main channel station without tidal influence) indicate that the Changjiang transports 234.8 × 10⁵ mol/yr of DIAs and 49.6 × 10⁵ mol/yr of DISe to the East China Sea.

Original language	English
Pages (from-to)	93-104
Number of pages	12
Journal	Science of the Total Environment
Volume	377
Issue number	1
DOIs	https://doi.org/10.1016/j.scitotenv.2007.01.088
State	Published - 1 May 2007
Externally published	Yes

Keywords

As
Changjiang(Yangtze River)
Se
Source

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10.1016/j.scitotenv.2007.01.088

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title = "Hydrochemical processes controlling arsenic and selenium in the Changjiang River (Yangtze River) system",

abstract = "The hydrochemistry of arsenic and selenium in the Changjiang (Yangtze River) was studied, based on continuously monitored data at Nantong station (i.e. 180 km inland from river mouth), the main Changjiang channel and 10 major tributaries. The dissolved inorganic arsenic (DIAs) and selenium (DISe) concentrations of the Changjiang are related to water discharge, rock type of drain basin, anthropogenic influences etc. The DIAs and DISe levels vary over an order of magnitude throughout the basin (i.e. 6.95-68.9 nmol/L for DIAs, 1.16-9.92 nmol/L for DISe). Source rock composition is the primary control on the concentrations of DIAs and DISe in the Changjiang. Several tributaries (e.g. Xiangjiang River, Minjiang River and Tuojiang River) are contaminated by human activities. Flux calculations from hydrographic data at Datong (the most downstream main channel station without tidal influence) indicate that the Changjiang transports 234.8 × 105 mol/yr of DIAs and 49.6 × 105 mol/yr of DISe to the East China Sea.",

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author = "Yao, \{Qing Zheng\} and Jing Zhang and Ying Wu and Hui Xiong",

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doi = "10.1016/j.scitotenv.2007.01.088",

language = "英语",

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TY - JOUR

T1 - Hydrochemical processes controlling arsenic and selenium in the Changjiang River (Yangtze River) system

AU - Yao, Qing Zheng

AU - Zhang, Jing

AU - Wu, Ying

AU - Xiong, Hui

PY - 2007/5/1

Y1 - 2007/5/1

N2 - The hydrochemistry of arsenic and selenium in the Changjiang (Yangtze River) was studied, based on continuously monitored data at Nantong station (i.e. 180 km inland from river mouth), the main Changjiang channel and 10 major tributaries. The dissolved inorganic arsenic (DIAs) and selenium (DISe) concentrations of the Changjiang are related to water discharge, rock type of drain basin, anthropogenic influences etc. The DIAs and DISe levels vary over an order of magnitude throughout the basin (i.e. 6.95-68.9 nmol/L for DIAs, 1.16-9.92 nmol/L for DISe). Source rock composition is the primary control on the concentrations of DIAs and DISe in the Changjiang. Several tributaries (e.g. Xiangjiang River, Minjiang River and Tuojiang River) are contaminated by human activities. Flux calculations from hydrographic data at Datong (the most downstream main channel station without tidal influence) indicate that the Changjiang transports 234.8 × 105 mol/yr of DIAs and 49.6 × 105 mol/yr of DISe to the East China Sea.

AB - The hydrochemistry of arsenic and selenium in the Changjiang (Yangtze River) was studied, based on continuously monitored data at Nantong station (i.e. 180 km inland from river mouth), the main Changjiang channel and 10 major tributaries. The dissolved inorganic arsenic (DIAs) and selenium (DISe) concentrations of the Changjiang are related to water discharge, rock type of drain basin, anthropogenic influences etc. The DIAs and DISe levels vary over an order of magnitude throughout the basin (i.e. 6.95-68.9 nmol/L for DIAs, 1.16-9.92 nmol/L for DISe). Source rock composition is the primary control on the concentrations of DIAs and DISe in the Changjiang. Several tributaries (e.g. Xiangjiang River, Minjiang River and Tuojiang River) are contaminated by human activities. Flux calculations from hydrographic data at Datong (the most downstream main channel station without tidal influence) indicate that the Changjiang transports 234.8 × 105 mol/yr of DIAs and 49.6 × 105 mol/yr of DISe to the East China Sea.

KW - As

KW - Changjiang(Yangtze River)

KW - Se

KW - Source

UR - https://www.scopus.com/pages/publications/33947167753

U2 - 10.1016/j.scitotenv.2007.01.088

DO - 10.1016/j.scitotenv.2007.01.088

M3 - 文章

C2 - 17346780

AN - SCOPUS:33947167753

SN - 0048-9697

VL - 377

SP - 93

EP - 104

JO - Science of the Total Environment

JF - Science of the Total Environment

IS - 1

ER -

Hydrochemical processes controlling arsenic and selenium in the Changjiang River (Yangtze River) system

Abstract

Keywords

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