Scholarlink

<p>This study investigated contamination of heavy metals (HMs) in urban and rural water networks of Hamadan province, west of Iran, and their attributed health risks through the ingestion of tap drinking water. This is a novel study that focused on a comprehensive investigation of HMs in the province. A total of 109 samples were collected and the concentrations of As, Hg, Cr, Cu, Pb, Cd, Zn, and Ni were determined by polarography. The values for As in 26% of the studied rural areas were higher than the national and WHO guidelines. It concluded that the tap water in rural areas had higher levels of As compared to urban areas. Also, the HMs concentrations were used to compute their average daily dose (ADD<sub>ing.</sub>), hazard quotient (HQ) and Excess Lifetime Cancer Risk (ELCR) according to the EPA. Finally, sensitivity analysis and uncertainty of the effective variables were performed using Monte Carlo simulation. HQs were found in the order of As &gt; Hg &gt; Zn &gt; Pb &gt; Cr &gt; Cu &gt; Cd &gt; Ni in both urban and rural areas. The HQ indices and ELCR values for As in 16 villages were found above 1.0 and 1.0 × 10<sup>−4</sup> (the acceptable values for adults), respectively, while these values were below in the rest of the samples. Therefore, these villages have significant chronic and carcinogenic health effects on local inhabitants due to exposure to As via tap&#xa0;water ingestion. Emergency efforts should be made to provide safe potable water to the residents of these areas.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Contamination and health risk assessment of heavy metals in tap drinking water consumed by urban and rural inhabitants in the west of Iran: a case study

  • 期刊论文

  • 发表日期：

    2025年7月27日

查看全文
  • Seyyed Bahman Aleseyyed,
  • Mohammad Khazaei,
  • Sara Heidari,
  • Mehdi Khodabakhshi

摘要

This study investigated contamination of heavy metals (HMs) in urban and rural water networks of Hamadan province, west of Iran, and their attributed health risks through the ingestion of tap drinking water. This is a novel study that focused on a comprehensive investigation of HMs in the province. A total of 109 samples were collected and the concentrations of As, Hg, Cr, Cu, Pb, Cd, Zn, and Ni were determined by polarography. The values for As in 26% of the studied rural areas were higher than the national and WHO guidelines. It concluded that the tap water in rural areas had higher levels of As compared to urban areas. Also, the HMs concentrations were used to compute their average daily dose (ADDing.), hazard quotient (HQ) and Excess Lifetime Cancer Risk (ELCR) according to the EPA. Finally, sensitivity analysis and uncertainty of the effective variables were performed using Monte Carlo simulation. HQs were found in the order of As > Hg > Zn > Pb > Cr > Cu > Cd > Ni in both urban and rural areas. The HQ indices and ELCR values for As in 16 villages were found above 1.0 and 1.0 × 10−4 (the acceptable values for adults), respectively, while these values were below in the rest of the samples. Therefore, these villages have significant chronic and carcinogenic health effects on local inhabitants due to exposure to As via tap water ingestion. Emergency efforts should be made to provide safe potable water to the residents of these areas.