| 史艳萍,张 洁,毛 苇,严如玉,胡克龙,凌 铭,计 勇.南昌市湖泊重金属源识别及污染特征风险评价[J].江西水利科技,2022,(3): |
| 南昌市湖泊重金属源识别及污染特征风险评价 |
| Source identification and risk assessment for the pollution characteristic of heavy metal in the lakes of Nanchang city |
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| DOI： |
| 中文关键词: 南昌市 城市湖泊 重金属 污染特征 风险评价 |
| 英文关键词: Nanchang Urban lake Heavy metal Pollution characteristics Risk assessment |
| 基金项目: |
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| 中文摘要: |
| 为了解南昌市湖泊重金属污染特征现状，论文以青山湖、象湖及前湖为研究对象，在分析湖泊水体及沉积物重金属Cr、Ni、Cu、Zn、Cd、Pb水平的基础上，采用因子分析、地质累积指数与综合潜在生态风险指数对湖泊重金属污染水平进行评价，并结合主成分分析等统计方法判别各研究水域重金属污染源。结果表明水域中Cr、Cd与Pb为主要重金属污染元素，前湖面临着最为严重的水体重金属污染。沉积物中Ni、Cu、Zn、Cd、Pb存在不同程度风险，各湖泊中沉积重金属风险程度从大到小均为Cd>Cu>Pb>Ni>Zn。前湖生态风险程度最大，其次是象湖。主成分分析表明湖泊重金属主要来源于交通运输与废水废气排放。因此为避免进一步污染，应合理规划交通，控制汽车尾气排放，提升污水治理水平。 |
| 英文摘要: |
| In order to reveal the distribution characteristics and sources of heavy metal in urban lakes,water and sediments from Lake Qingshan,Xianghu and Qianhu located in Nanchang were sampled and analyzed.After chemical analysis for Cr,Ni,Cu,Zn,Cd and Pb,factor analysis,geological accumulation index and comprehensive potential ecological risk index were used to evaluate the heavy metal pollution levels.The statistical methods including principal component analysis were applied to identify the sources of heavy metal pollution for studied water area.The results indicated that Cr,Cd and Pb were the main heavy metal pollution elements,and heavy metal pollution from Lake Qianhu was the most serious.Meanwhile,Ni,Cu,Zn,Cd and Pb in sediment were also faced with different levels of pollution.The pollution levels of different lakes were as follows:Cd>Cu>Pb>Ni>Zn.Lake Qianhu has the greatest ecological risk,followed by Lake Xianghu.Principal component analysis revealed that heavy metals were mainly derived from transportation the emissions of waste water and waste gas.In order to reduce pollution,more measures should be taken in terms of transportation planning,vehicle exhaust emissions and sewage treatment. |
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