Environmental Fate Modelling of Lead Contamination in Water and Sediments of Hawizeh Marshes

Mohsen Bayatzadeh, Fatemeh Karimi Organi, A. Koshafar, S. Sabzalipour, Maryam Mohammadi Rouzbahani
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Abstract

Background: This study aimed to determine the maximum concentration of lead in the water and sediments of Hawizeh Swamp during 2020-2021. Methods: The ECOFATE model was employed to calculate ecological risk parameters (RQ) along with total dissolved solids (TDS), total suspended solids (TSS), and total organic carbon (TOC) at four stations during summer and winter. Using the framework of environmental fate model of ECOFATE, comprehensive data on hydrological sections, input chemical quantities, chemical characteristics, and ecosystem attributes were measured. Results: The findings indicated that lead concentrations were at the highest level in both sediment and water samples of the wetland across three-dimensional space during summer and winter. TSS, TOC and TDS values were estimated, of which the TDS was used to measure ecological risk due to its higher values. Conclusion: The RQ values of lead indicated high and medium risk within the sedimentary and aquatic environments of the wetland ecosystem, respectively. Statistical calculations further revealed that this wetland was at risk of environmental pollution, posing potential hazards to humans through the food chain. The increase in the biological pollution of this wetland is due to the increase in the population and urban sewage. Therefore, it is imperative to raise public awareness regarding the significance of the wetland and advocate for its regular monitoring.
哈维泽沼泽地水和沉积物中铅污染的环境归宿模拟
背景:本研究旨在确定 2020-2021 年期间哈维泽沼泽水和沉积物中铅的最大浓度。研究方法:采用 ECOFATE 模型计算夏季和冬季四个站点的生态风险参数 (RQ),以及总溶解固体 (TDS)、总悬浮固体 (TSS) 和总有机碳 (TOC)。利用 ECOFATE 环境归宿模型框架,测量了水文断面、输入化学物质数量、化学特征和生态系统属性等综合数据。结果表明研究结果表明,在夏季和冬季,湿地沉积物和水样中的铅浓度在三维空间中均处于最高水平。对 TSS、TOC 和 TDS 值进行了估算,其中 TDS 因其值较高而被用于衡量生态风险。结论铅的 RQ 值分别表明该湿地生态系统的沉积环境和水生环境中存在高风险和中风险。统计计算进一步表明,这片湿地存在环境污染风险,会通过食物链对人类造成潜在危害。该湿地生物污染的增加是由于人口和城市污水的增加。因此,当务之急是提高公众对该湿地重要性的认识,并倡导对其进行定期监测。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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