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モアティゼ (モザンビーク) の水質の評価:石炭の採掘と使用による人間の健康への潜在的なリスク
Micaela Arlete José Chapo Cossa1, Hassina Mouri2, Robert B Finkelman3
1Department of Geology, Faculty of Science, University of Johannesburg, Johannesburg, 2006, South Africa.
Environmental geochemistry and health
|February 12, 2026
まとめ
モザンビークのモアティゼの鉛やセレニウムのような有害な元素
科学分野:
- 環境科学と健康環境科学と健康
- 地質化学 地質化学
- 水質評価 水質評価について
背景:
- モアティゼ,モザンビークは,水汚染による潜在的な健康リスクに直面しています.
- 石炭採掘活動は,潜在的に有毒な元素 (PTEs) のレベルが高くなるのに寄与する可能性があります.
- 水の化学を理解することは,公衆衛生と環境保護にとって極めて重要です.
研究 の 目的:
- モアティゼの地表水と地下水中の有害な要素と関連する健康リスクの評価をするために.
- 持続可能な開発目標 (SDGs) 3と6に関連して水の質を評価する.
- 水の化学と汚染レベルに影響を与える主要なイオンとPTEを特定する.
主な方法:
- 雨季と乾季の間に30個の水サンプルを採取した.
- イオンクロマトグラフィ (IC) を使用したメジャーイオンの分析.
- ICP-MS.を使用した水,石炭,灰のサンプルにおけるPTE濃度の決定.
主要な成果:
- 石炭と石炭灰のPTE濃度は世界平均を超えた;水の化学は主に岩石の気象による影響を受けている.
- ほとんどの水サンプルにおける鉛 (Pb) とセレン (Se) の濃度は,WHOとモザンビークの水質限界値 (MWQL) を超えた.
- 汚染指数 (PI) は,Pb,Se,Mn,Cuを主要な汚染物質として,さまざまなレベルの汚染を示した.
結論:
- ニート (NO3-),銅 (Cu),セレニウム (Se) の経口曝露は,特に子供にとって,潜在的な非発がん性健康リスクをもたらす.
- 皮膚への曝露は健康に重大なリスクをもたらさなかった.
- モアティゼの水質は,PTEに関連する健康リスクを軽減するために慎重に管理する必要があります.
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