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<p>Anthropogenic pollution of border waters can be a source of contention between neighboring countries. However, little information is available on West African transboundary lagoon contamination by trace metals. The objectives of this research were to investigate into the spatial and seasonal fluctuations of mercury, arsenic, lead, and cadmium, the amount of metal pollution, and the potential health risks involved with cutaneous contact in the waters of the Aby Lagoon, a border lagoon in West Africa. The water samples were collected from February 2020 to October 2020. A one-way analysis of variance was used to investigate differences in trace metal total concentration between stations and, between seasons. Trace metal evaluation index and Human Health Risk Indices were used to assess the quality of water and the potential human health risk, respectively. Overall, the amounts of mercury, lead, cadmium, and arsenic did not vary between the stations, indicating that human activities in the area around these stations are similar. Throughout the research period, there was no seasonal change in total mercury and lead concentrations. However, total arsenic and cadmium concentrations differed greatly from season to season. The averages mercury, arsenic, cadmium, and lead concentrations were 2.28 ± 1.37&#xa0;µg/L, 9.58 ± 5.80&#xa0;µg/L, 0.72 ± 0.68&#xa0;µg/L, and 1.16 ± 1.24&#xa0;µg/L, respectively. Dermal contact with the water may expose the population to arsenic and cadmium-related cancers, as indicated by the results of the prospective human health risk indices. Based on the trace metal pollution index, most of the water is moderately to severely polluted. This study provides preliminary data on trace metals concentrations in the Côte d’Ivoire portion of the Aby Lagoon.</p>

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Trace metals distribution and potential human health risks in transboundary lagoon: a case study in West Africa

  • 期刊论文

  • 发表日期：

    2025年12月25日

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  • E. A. A. Yapi,
  • N. L. B. Kouassi,
  • B. L. G. L Zanli,
  • K. M. Yao,
  • B. J. G. Irié,
  • S. Sanogo,
  • A. S. Coulibaly

摘要

Anthropogenic pollution of border waters can be a source of contention between neighboring countries. However, little information is available on West African transboundary lagoon contamination by trace metals. The objectives of this research were to investigate into the spatial and seasonal fluctuations of mercury, arsenic, lead, and cadmium, the amount of metal pollution, and the potential health risks involved with cutaneous contact in the waters of the Aby Lagoon, a border lagoon in West Africa. The water samples were collected from February 2020 to October 2020. A one-way analysis of variance was used to investigate differences in trace metal total concentration between stations and, between seasons. Trace metal evaluation index and Human Health Risk Indices were used to assess the quality of water and the potential human health risk, respectively. Overall, the amounts of mercury, lead, cadmium, and arsenic did not vary between the stations, indicating that human activities in the area around these stations are similar. Throughout the research period, there was no seasonal change in total mercury and lead concentrations. However, total arsenic and cadmium concentrations differed greatly from season to season. The averages mercury, arsenic, cadmium, and lead concentrations were 2.28 ± 1.37 µg/L, 9.58 ± 5.80 µg/L, 0.72 ± 0.68 µg/L, and 1.16 ± 1.24 µg/L, respectively. Dermal contact with the water may expose the population to arsenic and cadmium-related cancers, as indicated by the results of the prospective human health risk indices. Based on the trace metal pollution index, most of the water is moderately to severely polluted. This study provides preliminary data on trace metals concentrations in the Côte d’Ivoire portion of the Aby Lagoon.