Liu Changbing, Xu Jian, Liu Chunguang, Zhang Ping, Dai Mingxin
Tianjin Research Institute of Water Transport Engineering, Tianjin, 300456, China.
Bull Environ Contam Toxicol. 2009 Jan;82(1):26-30. doi: 10.1007/s00128-008-9563-x. Epub 2008 Sep 20.
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.
采用电感耦合等离子体原子发射光谱法（ICP-AES）对兰州段黄河表层沉积物中的砷（As）、铅（Pb）、锌（Zn）、铬（Cr）、铜（Cu）和锰（Mn）等重金属污染及其形态进行了监测。沉积物中各重金属的平均含量（以μg/g干重计）范围为：砷13.68 - 48.11、铅26.39 - 77.66、锌89.80 - 201.88、铬41.49 - 128.30、铜29.72 - 102.22、锰773.23 - 1459.69。空间分布表明，该河段各重金属浓度几乎保持恒定。相关系数表明，金属与沉积物砂含量或有机碳含量（f(oc)）没有很强的相关性。不稳定形态（可交换态 + 碳酸盐态 + 铁锰氧化物态）与砂含量或f(oc)也没有显著相关性。本研究结果有助于了解湍急河流沉积物环境中的重金属分布情况。
