Evolution Characteristics and Environmental Significance of Heavy Metals in Sediments of Yanma Reservoir

1st International Global on Renewable Energy and Development

Ding, Zhaoyun^1 ; Wei, Wenjing^1 ; Li, Huihui^1

School of Tourism, Resources and Environment, Zaozhuang University, Zaozhuang, Shandong

277160, China^1

关键词: Ecological managements;    Environmental significance;    Evolution characteristics;    Heavy metal concentration;    Heavy metal elements;    Heavy metal pollutants;    Natural environments;    Vertical distributions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/100/1/012203/pdf
DOI  :  10.1088/1755-1315/100/1/012203

来源: IOP

【 摘 要 】

The sediment column samples of Yanma reservoir were collected. The sedimentary age of the column sediments were confirmed based on radioisotope210Pb dating means to calculate the deposition rate and to draw out the age trend chart of the quality changes of heavy metal elements and to analyse their related factors. According to the above data this study comparatively analysed the vertical distribution characteristics of five heavy metal elements ( Cr, Cu, Zn, As, Pb) and investigated the relationship between the change of heavy metal concentration and the changes of natural environment, human activities as well as explore its referential meaning, provided the basis for the ecological management of Yanma reservoir. The results showed that the main heavy metal pollutants of the Yanma reservoir were Zn and Cr, followed by Cu, Pb and As. The water environment has been polluted gradually since 1958 the Yanma reservoir established. During 1993-1997, the metal elements were obviously enriched and the water quality of the reservoir deteriorated obviously. During 1994-2010, the water pollution of the reservoir had been weakened, and the water environment had been improved effectively.