尼日利亚拉各斯Ikorodu打火机码头泻湖水中重金属、理化参数和微生物的人体安全评价

T. Yahaya, Khadijat Balogun, M. Danlami, U. Shemishere, Y. Abdulganiyu, Olatunji Ola-Buraimo
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引用次数: 1

摘要

Ikorodu打火机码头是尼日利亚拉各斯一个重要的泻湖港口。然而,在港口周围发生的激烈的人为活动可能会污染水。这项研究评估了人类接触港口周围水域的安全性。测定样品的理化参数:电导率、生化需氧量(BOD)、总悬浮固体(TSS)、总溶解固体(TDS)、pH、浊度、硬度、钙、氯化物、硫酸盐、亚硝酸盐和磷酸盐。此外,对铅、锰、铜、镉、镍和铬等重金属进行了分析,并利用它们的值来估计潜在的健康风险。还检测了微生物的存在。水样中亚硝酸盐、油脂和生化需氧量超标。除Ni外,其余重金属的浓度、日平均摄食量和日平均皮肤暴露量均在可容忍范围内。然而,它们的危害商和通过摄入和皮肤接触的致癌风险超过了可容忍的限度。在水中检测到安全水平的细菌、大肠菌群和真菌。根据这些结果,这些水可能使使用者面临健康危害。有必要制定针对人类接触水的安全的政策。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Human Safety Evaluation of Heavy Metals, Physicochemical Parameters, and Microorganisms in Lagoon Water at Ikorodu Lighter Terminal in Lagos, Nigeria
Ikorodu Lighter Terminal is an important lagoon port in Lagos, Nigeria. However, the intense anthropogenic activities that take place around the port could potentially pollute the water. This study assessed the safety of human exposure to the water around the port. Samples of the water were assayed for physicochemical parameters, namely: electrical conductivity, biochemical oxygen demand (BOD), total suspended solids (TSS), total dissolved solids (TDS), pH, turbidity, hardness, calcium, chloride, sulphate, nitrite, and phosphate. Moreover, heavy metals, including lead, manganese, copper, cadmium, nickel, and chromium, were analyzed, and their values were used to estimate potential health risks. Also assayed was the presence of microorganisms. The water samples had non-permissible levels of nitrite, oil and grease, and BOD. The concentrations of the heavy metals as well as their average daily ingestion and average daily dermal exposure were within the tolerable limits, except Ni. However, their hazard quotient and carcinogenic risk via ingestion and dermal contact exceeded the tolerable limits. Safe levels of bacteria, coliforms, and fungi were detected in the water. Based on these results, the water may expose users to health hazards. There is a need for policies geared towards the safety of human exposure to the water.
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