| 华北平原典型城市(石家庄)地下水重金属污染源解析与健康风险评价 |
| 摘要点击 1453 全文点击 441 投稿时间：2022-10-12 修订日期：2022-11-24 |
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| 中文关键词 华北平原 城市 地下水 重金属 源解析 健康风险 |
| 英文关键词 North China Plain urban groundwater heavy metals source analysis health risks |
| 作者 | 单位 | E-mail | | 陈慧 | 河北科技大学环境科学与工程学院, 石家庄 050018 | chh1007@163.com | | 赵鑫宇 | 河北科技大学环境科学与工程学院, 石家庄 050018 | | | 常帅 | 河北科技大学环境科学与工程学院, 石家庄 050018 | | | 宋圆梦 | 河北科技大学环境科学与工程学院, 石家庄 050018 | | | 卢梦淇 | 河北科技大学环境科学与工程学院, 石家庄 050018 | | | 赵波 | 河北科技大学环境科学与工程学院, 石家庄 050018 | | | 陈昊达 | 河北科技大学环境科学与工程学院, 石家庄 050018 | | | 高赛 | 河北科技大学环境科学与工程学院, 石家庄 050018 | | | 王琳静 | 河北科技大学环境科学与工程学院, 石家庄 050018 | | | 崔建升 | 河北科技大学环境科学与工程学院, 石家庄 050018
河北省污染防治生物技术实验室, 石家庄 050018 | | | 张璐璐 | 河北科技大学环境科学与工程学院, 石家庄 050018
河北省污染防治生物技术实验室, 石家庄 050018 | zhanglulu19850703@163.com |
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| 中文摘要 |
| 地下水重金属污染已引起全球的广泛关注，重金属来源解析及其健康风险评估将为地下水中重金属污染的精准防控提供数据和方法支撑.因此，选取华北平原典型城市——石家庄作为研究区，筛选20个样点，利用APCS-MLR模型和健康风险模型解析评估了石家庄市地下水中10种重金属的污染源及其健康风险.结果表明：①石家庄市地下水中典型重金属的浓度均值排序为：Fe>Zn>Mn>Cu>Al>Pb>Cr>As>Cd>Hg，其中ρ（Fe）和ρ（Pb）的均值分别为260.3 μg ·L-1和10.01 μg ·L-1；根据单因子和内梅罗指数，Pb、Fe和Cd是石家庄市地下水主要的污染重金属；②重金属浓度范围为47.30~2560 μg ·L-1；就空间分布而言，重金属浓度在S3处最高（2560 μg ·L-1），而在S9处最低（47.30 μg ·L-1）；③污染源解析结果表明：工农业活动、交通排放和地质背景是石家庄市地下水中重金属的3个主要来源，其中工农业活动对重金属的累积贡献率最大（47.83%）；④除工农业活动来源的重金属对成人造成潜在威胁（HI>1）外，其余来源的重金属对成人和儿童造成的非致癌风险均处于可接受水平（HI<1），而致癌风险对成人和儿童均存在潜在威胁；工农业活动是非致癌风险（成人：52.46%，儿童：52.45%）和致癌风险（成人：65.22%，儿童：65.69%）的主要贡献者，其中Cd和As的致癌风险较高.因此，为了保障石家庄地下水环境安全，需严格控制污染来源，进一步加强地下水中重金属污染的风险管控. |
| 英文摘要 |
| Increasing attention has been paid to the heavy metal pollution in groundwater. The source analysis and risk assessment of heavy metals will provide data and method support for the targeted control of heavy metal pollution in groundwater. In this study, 20 sampling sites were selected in Shijiazhuang City. The APCS-MLR model and health risk model were applied to analyze and evaluate the pollution sources and health risks of 10 types of heavy metals in the groundwater of Shijiazhuang. The results showed that ① the mean concentration of heavy metals in groundwater followed the order of Fe>Zn>Mn>Cu>Al>Pb>Cr>As>Cd>Hg, and the mean ρ(Fe) and ρ(Pb) were 260.3 μg·L-1 and 10.01 μg·L-1, respectively. According to the results of the single factor and Nemerow index, Pb, Fe, and Cd primarily contributed to the heavy metal pollution in the groundwater. ② The concentration of heavy metals ranged from 47.30 to 2560 μg·L-1. In terms of spatial distribution, the highest concentration appeared at S3 (2560 μg·L-1), whereas the lowest concentration was at S9 (47.30 μg·L-1). ③ Source analysis results showed that industrial and agricultural activities, transportation emission, and geological background were the major heavy metal sources, among which the contribution of industrial and agricultural activities was the highest (47.83%). ④ The industrial-agricultural activities posed a potential threat to adults (HI>1); however, the non-cancer and the cancer risks of other sources for both adults and children were at an acceptable level (HI<1) and potential threat level, respectively; industrial-agricultural activities were the major source of non-cancer (adults:52.46%, children:52.45%) and cancer risks (adults:65.22%, children:65.69%), among which Cd and As showed high cancer risk. Therefore, to ensure the safety of the groundwater environment, strictly controlling the pollution sources and further strengthening the risk control of heavy metal pollution in groundwater are necessary. |
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