Heavy Metals in the Surface Sediments in Lanzhou Reach of Yellow River, China

Overview

Journal Bull Environ Contam Toxicol

Specialties Environmental Health
Toxicology

Date 2008 Sep 23

PMID 18806907

Citations 18

Authors

Changbing Liu

Jian Xu

Chunguang Liu

Ping Zhang

Mingxin Dai

Affiliations

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Abstract

The heavy metal pollution and their fractionations in the surface sediments of Yellow River in Lanzhou Reach was monitored for arsenic (As), lead (Pb), Zinc (Zn), chromium (Cr), copper (Cu) and manganese (Mn) with Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES). The mean sediment concentrations (in microg/g dry weight) ranged from 13.68-48.11 (As), 26.39-77.66 (Pb), 89.80-201.88 (Zn), 41.49-128.30 (Cr), 29.72-102.22 (Cu), and 773.23-1459.69 (Mn). Spatial distribution showed that each heavy metal concentration remained almost constant in this reach. Correlation coefficients indicated that metals were not strongly associated with sediment sand content or organic carbon content (f(oc)). Labile fractions (exchangeable + carbonate + Fe-Mn oxide) had no significant correlations with sand content or f(oc), either. Results from the present study are useful for understanding heavy metal distributions in a torrential river sediment environment.

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