可溶性Mn (III) 在亚箱性区域.
Robert E Trouwborst1, Brian G Clement, Bradley M Tebo
1College of Marine and Earth Studies, University of Delaware, Lewes, DE 19958, USA.
Science (New York, N.Y.)
|September 30, 2006
概括
以前被认为是不稳定的可溶 (Mn) 在黑海等自然水域中是丰富的. 这种形式在维护亚箱性区域方面发挥着关键作用.
科学领域:
- 环境化学环境化学
- 地质化学 地质化学
- 海洋化学 海洋化学
背景情况:
- 溶性 (III) [Mn (III) ]传统上被认为在自然水中不稳定,与Mn (II) 和Mn (IV) O2.O2迅速不成比例.
- 之前的研究表明, (III) 主要存在于实验室环境中,而不是在自然水生环境中.
研究的目的:
- 研究自然水体中可溶的存在和稳定性.
- 确定可溶性在水生系统中的生态化学循环中的作用.
- 了解Mn (III) 在亚盒子区域的形成和稳定机制.
主要方法:
- 从黑海和切萨皮克湾收集了水样,用于物种分析.
- 使用深度分析来绘制水柱内可溶性的分布.
- 分析了的度和物种化,以确定Mn (III) 的生产和消费区域.
主要成果:
- 在黑海中检测到高度的可溶性,高达5微米,包括100%的溶解.
- 通过在上方亚箱区的Mn(II) 氧化和在下方亚箱区的Mn(IV) O2降解,确定了Mn(III) 的产生.
- 发现可溶性 (III) 在研究的两种环境中都被未知的天然配体稳定.
- 在切萨皮克湾 (Chesapeake Bay) 观察到溶解的微分子度.
结论:
- 溶性 (III) 是自然水中溶解的中稳定且重要的成分.
- (III) 通过作为电子受体和电子捐赠体,在维持亚盒子区方面发挥着至关重要的作用.
- (III) 可能在水生环境和沉积物中的氧/无氧接口处无处不在.
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