アルミニウムフラックの起源は,汚染された川の流れにある
Gerhard Furrer1, Brian L Phillips, Kai-Uwe Ulrich
1Institute of Terrestrial Ecology, Eidgenössische Technische Hochschule Zürich, Grabenstrasse 3, CH-8952 Schlieren, Switzerland. furrer@ito.umnw.ethz.ch
まとめ
鉱業は,流域を酸性,アルミニウム,重金属で汚染しています. これらの汚染物質は,影響を受けた流れで見つかった集積されたアルミニウム酸化水酸化物,特にAl13ナノクラスターから形成される可能性が高い.
科学分野:
- 環境化学 環境化学
- 地質化学 地質化学
- 水質 水質 水質 水質
背景:
- 鉱山活動は広大な土地を破壊し,流域の汚染につながります.
- 酸性鉱山の排水と土壌は,水体を酸性,アルミニウム,重金属で汚染しています.
- 汚染物質は,酸化アルミニウム酸化水酸化物として沈殿し,懸浮固体として流れに運ばれます.
研究 の 目的:
- 鉱山で汚染された川のアルミニウムオキシヒドロキシドフラックの組成と起源を調査する.
- の形成と汚染物質の輸送に責任を負う特定のアルミニウム種を特定する.
主な方法:
- 鉱業の影響を受けた9つの川のサンプルを分析した.
- 先進技術を用いたアルミニウムオキシヒドロキシドフラックの特徴化.
- エプシロン-ケギンのポリオキシオケーションAlO4Al12(OH) 24(H2O) 12(7+) ((aq) (Al13) をフラックス内で識別する.
主要な成果:
- 分析されたすべてのフラックは,明確なAl ((O) 4) センターを含んでいた.
- これらのセンターは,構造的にはAl13ナノクラスターで見つかったものと類似しています.
- 証拠によると,Al13ナノクラスターは,観察された酸化アルミニウム酸化水酸化物フラックの前身であることを示唆しています.
結論:
- Al13ナノクラスターは,鉱業で汚染された流域のアルミニウム酸化水酸化物フラックの形成に起因する可能性があります.
- これらのフラックは,吸収された汚染物質の輸送において重要な役割を果たします.
- の形成を理解することは,鉱業関連の水質汚染の軽減に不可欠です.
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