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J Hazard Mater. 2014 Apr 15;270:102-9. doi: 10.1016/j.jhazmat.2014.01.044. Epub 2014 Feb 2.

Heavy metals in surface sediments of the Jialu River, China: their relations to environmental factors.

Author information

1
State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, China; Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL 36849, United States.
2
State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, China.
3
Department of Mathematics and Statistics, Auburn University, Auburn, AL 36849, United States.
4
College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China. Electronic address: liuchunshengidid@126.com.
5
Laboratory of General & Inorganic Chemical Technology, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece.
6
Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL 36849, United States.
7
State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210093, China. Electronic address: zhuhl@nju.edu.cn.

Abstract

This work investigated heavy metal pollution in surface sediments of the Jialu River, China. Sediment samples were collected at 19 sites along the river in connection with field surveys and the total concentrations were determined using atomic fluorescence spectrometer and inductively coupled plasma optical emission spectrometer. Sediment samples with higher metal concentrations were collected from the upper reach of the river, while sediments in the middle and lower reaches had relatively lower metal concentrations. Multivariate techniques including Pearson correlation, hierarchical cluster and principal components analysis were used to evaluate the metal sources. The ecological risk associated with the heavy metals in sediments was rated as moderate based on the assessments using methods of consensus-based Sediment Quality Guidelines, Potential Ecological Risk Index and Geo-accumulation Index. The relations between heavy metals and various environmental factors (i.e., chemical properties of sediments, water quality indices and aquatic organism indices) were also studied. Nitrate nitrogen, total nitrogen, and total polycyclic aromatic hydrocarbons concentrations in sediments showed a co-release behavior with heavy metals. Ammonia nitrogen, total nitrogen, orthophosphate, total phosphate and permanganate index in water were found to be related to metal sedimentation. Heavy metals in sediments posed a potential impact on the benthos community.

KEYWORDS:

Benthos; Canonical correspondence analysis; Environmental factors; Heavy metals; Sediments

PMID:
24561322
DOI:
10.1016/j.jhazmat.2014.01.044
[Indexed for MEDLINE]

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