Assessment and Health Risks of Glyphosate Residues and Traces Metals Elements in Groundwater Arround Abidjan Region, Côte d’Ivoire

Béa Gouanda Thibaut, Ouffoué Koffi Sébastien, Yapo Ossey Bernard, Ouattara Lassiné
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Abstract

Hydraulic networks from groundwater are the resources most exploited by the population for their daily needs. These water tables are constantly under pressure from pollution caused by human activities. In the tropical zone, more particularly in Ivory Coast, very few studies have been carried out on glyphosate, aminomethylphosphonic acid (AMPA), glufosinate and metallic trace elements (ETM) in groundwater. This study aims to determine the level of vulnerability of groundwater by these compounds. The study covered the waters of thirteen boreholes with an average depth of 69.26 meters near the Abidjan region (5°25'0" N / 4°1'60" W ) and the analyzes were carried out using the chromatographic method with detection by spectrophotometry. The results revealed the presence of glyphosate in all the samples analyzed at average concentrations of: 0.12±0.02 µg/L (minimum) and 1.9 ±0.1 µg/L (maximum), all higher than the water potability threshold value (0.1 µg/L) defined by the WHO. As for ETM, they are present in these boreholes at high concentrations of: 39±2 µg/L (As), 130±3 µg/L (Pb), 80±1 µg/L (Cu), 73±3 µg /L (Ni), 200±3 µg/L (Zn) at FILTISSAC, 20±2 µg/L (Cr) at Vridi and 21000 ±200 µg/L (S) in the Koumassi borehole. The health risk linked to the consumption of groundwater by the population, according to the mathematical calculation model used, is not acceptable. This study deserves to be conducted throughout the national territory.
阿比让地区周边地下水中草甘膦残留物和微量金属元素的评估和健康风险,Côte科特迪瓦
地下水水力管网是人们为满足日常需要而开发最多的资源。这些地下水位不断受到人类活动造成的污染的压力。在热带地区,特别是在科特迪瓦,很少对地下水中的草甘膦、氨基甲基膦酸、草铵膦和金属微量元素进行研究。本研究旨在确定这些化合物对地下水的脆弱性程度。研究覆盖了阿比让地区(5°25′0”N / 4°1′60”W)附近13个平均深度为69.26米的钻孔水域,采用色谱法和分光光度法进行分析。结果显示,所有分析样品中草甘膦的平均浓度为:0.12±0.02µg/L(最低)和1.9±0.1µg/L(最高),均高于世界卫生组织规定的饮用水阈值(0.1µg/L)。至于ETM,它们在这些钻孔中以高浓度存在:FILTISSAC的39±2µg/L (As)、130±3µg/L (Pb)、80±1µg/L (Cu)、73±3µg/L (Ni)、200±3µg/L (Zn)、Vridi的20±2µg/L (Cr)和Koumassi的21000±200µg/L (S)。根据所使用的数学计算模型,与人口消耗地下水有关的健康风险是不可接受的。这项研究应该在全国范围内进行。
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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