广州市城市公园绿地土壤重金属污染评价  

Evaluation of heavy metal element pollution in soil of urban parks in Guangzhou

作　　者：郭宇 李茹 王钊 郑小战 张俊岭[2] 欧阳婷萍 朱照宇[2] GUO Yu;LI Ru;WANG Zhao;ZHENG Xiaozhan;ZHANG Junling;OUYANG Tingping;ZHU Zhaoyu(Guangzhou Geological Survey,Guangzhou 510440,China;Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China;School of Geography,South China Normal University,Guangzhou 510631,China)

机构地区：[1]广州市地质调查院,广东广州510440 [2]中国科学院广州地球化学研究所,广东广州510640 [3]华南师范大学地理科学学院,广东广州510631

出　　处：《安徽大学学报（自然科学版）》2023年第6期81-92,共12页Journal of Anhui University(Natural Science Edition)

基　　金：中国地质调查局项目及其子项目(DD20190291,DD20190291-2);广州市国土资源和规划委员会项目([2017]03);广州市“岭南英杰”后备人才资助项目([2019]928)。

摘　　要：城市土壤重金属污染已引起广泛的社会关注.笔者对广州市主城区133组公园绿地土壤样品开展重金属污染元素测定.结果表明,Hg,Cd,Zn,As,Pb,Cu均超过背景值;雕塑公园样点As含量超过风险管制值;单因子污染指数法表明雕塑公园、儿童公园和越秀公园的土壤环境质量为Ⅱ等,属轻微及以上污染,其他公园为Ⅰ等;根据地累积指数法统计结果显示,荔湾湖公园出现Cd,Zn极强污染,Hg强污染,人民公园和越秀山公园出现Hg极强污染;潜在生态危害评价总体以轻微风险为主,中等风险与Cd,Hg污染有关;土壤污染元素对儿童存在潜在非致癌风险,对三类人群存在致癌风险,主要致癌因子为As,Cr污染;As元素超过风险管制值,或与输入型污染有关,Hg,Cd超标与人类活动有关.Heavy metal element pollution in urban soil has aroused widespread social concern.The 133 soil samples from green land of urban park in Guangzhou were collected.Hg、Cd、Zn、As、Pb、Cu exceeded the background values.The As content in the sculpture park sample points exceeded the risk control value;the single factor pollution index showed that the soil quality of the sculpture park,children's park and Yuexiu Park was the second-class,belonging to the slight pollution or above,while the other parks were the first-class quality.The geo-accumulation index indicated that Cd and Zn pollution in Liwan Lake Park was extremely serious,and Hg pollution was serious.An extremely serious Hg pollution occurred in People's Park and Yuexiu Mountain Park.The potential ecological risk index was mainly slight risk and the medium risk and above were caused by Cd and Hg;human health assessment showed that heavy metals in urban park soil had potential non-carcinogenic risk to children and carcinogenic risk to all three groups of people,and the main carcinogenic factors were As and Cr.The exogenous factors make the As content exceed the risk control value;the Hg and Cd pollutions were closely related to the human activities.

关 键 词：公园绿地 土壤 重金属 风险评估 健康评价 

分 类 号：X82[环境科学与工程—环境工程] X83