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Abstract
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Article Information:
Spatial Distribution and Corresponding Factors of Heavy Metals Concentrations in the Dongjiang River Basin, Southeast China
Yuan Jiang, Zhenyu Ding, Qiuzhi Peng, Jianyu Liao and Leting Lv
Corresponding Author: Zhenyu Ding
Submitted: February 02, 2012
Accepted: March 06, 2012
Published: April 15, 2012 |
Abstract:
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The Dongjiang River Basin (Southeast China) is the world’s most populous and highly economic
development region over the last few decades. The present study is the first systematic analysis of heavy metals
of the aquatic environment in this area. Eighty seven samples were taken from the tributaries of the river
network to investigate the characteristics of heavy metal pollutants within the catchment, which suggests a
generally good water quality in terms of heavy metals, i.e., the mean metal concentrations of the tributaries are
generally well below those recommended for drinking purposes and lower than metal concentrations in other
regions and in world average background concentrations. Different multivariate statistical techniques are
combined to analyze the spatial pattern and the origin of, and the land-use effects on heavy metal pollutants.
Principal Component Analysis (PCA) and Redundant Analysis (RDA) are applied to group the different heavy
metals according to their variability at different sites. Relatively high levels of Hg originated from various
sources and cannot be quickly scavenged in the Dongjiang River system. An improved understanding of the
sources and their binding behaviors of heavy metals have implied the trend of elevated toxic potential from
certain metal groups in this aquatic ecosystem, which suggests the analysis of contaminates should probably
be combined with biological evaluations of toxicity at specific sites in future work.
Key words: Anthropogenic sources, contamination transport, PCA, pearl river delta, RDA, surface water,
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Cite this Reference:
Yuan Jiang, Zhenyu Ding, Qiuzhi Peng, Jianyu Liao and Leting Lv, . Spatial Distribution and Corresponding Factors of Heavy Metals Concentrations in the Dongjiang River Basin, Southeast China. Research Journal of Environmental and Earth Sciences, (04): 448-459.
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ISSN (Online): 2041-0492
ISSN (Print): 2041-0484 |
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