| 摘要: |
| 以汕头市某电子垃圾拆解活动影响的河道为研究对象，沿河道中线间隔 50 m 采集表层底泥
样品，检测分析其重金属含量，研究底泥重金属污染特征并综合评价了其生态风险。结果表明，参照GB4284—2018 中的 A 级污泥产物标准，调查区域河道底泥主要受到镉、铜、砷、镍、铅、锌等重金属污染。内梅罗综合污染指数法评价结果表明，河道底泥重金属总体呈重度污染。潜在生态危害指数范围为132.60~5 668.65，平均值为 1982.97，总体生态风险为极高风险，亟需开展河道底泥的生态修复工程。 |
| 关键词: 电子垃圾拆解 河道底泥 重金属 生态风险评价 |
| DOI： |
| 分类号: |
| 基金项目: |
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| Pollution Characteristics and Ecological Risk Assessment of Heavy Metals in River Sediment around E-waste Dismantling Area in Shantou City, Guangdong Province |
|
MAI Yongshi1, WEI Wei2
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1.Guangdong Huankeyuan Environmental Technology Co.Ltd;2.Guangdong Provincial Academy of Environmental Sciences
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| Abstract: |
| Taking the river channel aff ected by the typical e-waste dismantling activity in Shantou city as
the research object, the surface sediment samples were collected at intervals of 50 m along the middle line of
the river channel, and the heavy metal content was detected and analyzed. The pollution characteristics of heavy
metals in sediment were studied, and the ecological risk was comprehensively evaluated. The results showed
that according to the grade A sludge product standard in GB4284-2018, the river sediment in the survey area was
mainly contaminated by Cd, Cu, As, Ni, Pb, Zn, and other heavy metals. The evaluation results of the Nemero
comprehensive pollution index method showed that the heavy metals in the river sediment are generally heavily
polluted. The potential ecological hazard index ranged from 132.60-5 668.65, with an average value of 1 982.97.
The overall ecological risk was extremely high, and it was urgent to carry out ecological restoration projects of
river sediment. |
| Key words: e-waste dismantling river sediment heavy metals ecological risk assessment |
