[1]QIN Jianqiao,HUANG Xiaoping,RUAN Wengang.Heavy Metal Pollution and Ecological Risk Assessment in Sediments of the Xiling Channel of Inland Waterway of Guangdong Province[J].Research of Soil and Water Conservation,2019,26(03):331-338.
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Heavy Metal Pollution and Ecological Risk Assessment in Sediments of the Xiling Channel of Inland Waterway of Guangdong Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 03
Page number:
331-338
Column:
Public date:
2019-04-12
- Title:
- Heavy Metal Pollution and Ecological Risk Assessment in Sediments of the Xiling Channel of Inland Waterway of Guangdong Province
- CLC:
- X53
- DOI:
- -
- Abstract:
- Based on the study of the sediment environment of the river channel in the Xiling channel, we used the Nemeru comprehensive index method, the coefficient of variation, the cumulative index method and the potential ecological hazard index method to further analyze and evaluate the heavy metal pollution of sediment. The results showed that the Nemero comprehensive index of Cr was 1.10, which was grade Ⅲ, and was mildly polluted; the coefficient of variation of Cu was 0.62, the variation degree was large, the changes of Cr and Zn was obvious, the fluctuation occurred; the enrichment of heavy metals decreased in the order:Cd > Cu > Cr > Zn > Pb > Ni > Hg > As, the accumulation of Cd the index ranged from 1.32 to 1.87, the enrichment was the highest, and it was partial pollution. The ecological hazard of heavy metal decreased in the order:Cd > Hg > Cu > Pb > As > Cr > Ni > Zn, the contribution rate of Cd to the potential ecological risk index ranged from 57.7% to 74.2%, the potential ecological hazard coefficient was as high as 135, the ecological hazard was the strongest and the main control factor on the potential ecological risk. Xiling channel inland waterway sediment was polluted heavy metals to some extent, the main pollutant was cadmium.
- References:
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