| 王向辉1，2，李莹莹1，王燕莹1，王秀婉1，王香梅1，史载锋1.海口市龙华区河道底泥重金属污染生态风险评价[J].海南师范大学学报自科版,2019,32(3):349-354 |
| 海口市龙华区河道底泥重金属污染生态风险评价 |
| Ecological Risk Assessment on Heavy Metals in the Sediments of theRiver in Longhua District, Haikou |
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| DOI：10.12051/j.issn.1674-4942.2019.03.015 |
| 中文关键词: 底泥 重金属 潜在生态风险指数 污染负荷指数 |
| 英文关键词: sediment heavy metal potential ecological risk index pollution load index |
| 基金项目:海南省重点研发计划项目-社会发展方向（ZDYF2018170）；海口市重点科技计划项目（2017048）；海南省精细
化工工程技术研究中心开放课题 |
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| 摘要点击次数: 537 |
| 全文下载次数: 366 |
| 中文摘要: |
| 选取龙华区河湖等11个水体，设计20个取样断面进行底泥采样，分析底泥样品重金属
（锌、铜、镍、镉、铅、汞、砷、总铬）含量，采用潜在生态风险指数法和污染负荷指数法对其重金属污
染状况进行评价。潜在生态风险指数评价结果表明，底泥中重金属镉污染较为严重，11个水体中
有9个水体底泥样品中镉污染因子Cif＞1，其余重金属中除锌表现出轻微污染外，均未发现污染情
况，综合评价指标污染度Cd＜8，潜在生态风险指数RI＜150，表明测试底泥样品属于低风险水平；
污染负荷指数法评价结果表明，底泥样品中锌、铜、镉和铅的最高污染系数最高，综合评价参数点
位污染指数（PLI）和区域污染指数（PLIzone）均小于1，表明测试底泥样品整体无污染。 |
| 英文摘要: |
| Eleven rivers and lakes in Longhua district were selected and twenty sampling sections were designed to get
sediment samples, and the contents of heavy metals (zinc, copper, nickel, cadmium, lead, mercury, arsenic, total chromium)
in sediments were analyzed. The potential ecological risk index and pollution load index were used to evaluate the pollution
status of heavy metals in sediment samples. Potential ecological risk index evaluation results showed that cadmium pollu⁃
tion in sediment was the most serious. Cadmium pollution factor Cif＞1 was found in 9 sediment samples of 11 water bodies,
and no pollution was found in other heavy metals except zinc. The pollution degree of comprehensive evaluation index Cd＜ 8 and the potential ecological risk index RI＜150, which indicates that the tested sediment samples belong to the low risk
level. The results of pollution load index method show that the highest pollution coefficients of zinc, copper, cadmium which
lead in sediment samples are the highest, and the comprehensive evaluation parameters of point pollution index (PLI) and
regional pollution index (PLIzone) are all less than 1, indicated that the tested sediment samples are non-pollution. |
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