Hydrogen peroxide in deep waters of the North Pacific Ocean
Hydrogen peroxide in deep waters of the North Pacific Ocean
复制标题
北太平洋深水中的过氧化氢
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
A. Shiller
中科院分区：
文献类型：
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作者：
Jinchun Yuan;A. Shiller
过氧化氢是一种活性氧中间体，可以在各种氧化还原循环中发挥作用。在海洋中，一般认为它主要是由光产生的，在沃茨中的浓度可以忽略不计。我们利用高灵敏度的分析方法对北太平洋深层沃茨中的过氧化氢进行了研究。我们目前的证据表明，过氧化氢存在于低纳摩尔浓度在这些深沃茨与一个明显的最低限度的深度范围内的氧气最低。对可能的机制和速率的考虑表明，这种深层过氧化氢的停留时间很短（约12天），也有生物来源。过氧化氢可能是次要的金属循环在深海中，除了在低氧环境。
Hydrogen peroxide is a reactive oxygen intermediate that can play a role in a variety of redox cycles. In the ocean, it is generally considered to be dominantly photo‐produced with negligible concentrations in deep waters. We have utilized a highly sensitive analytical method to investigate hydrogen peroxide in deep waters of the North Pacific Ocean. We present evidence that hydrogen peroxide exists in low nanomolar concentrations in these deep waters with an apparent minimum in the depth range of the oxygen minimum. A consideration of possible mechanisms and rates suggests both a short (∼12 day) residence time as well as a biological origin for this deep hydrogen peroxide. Hydrogen peroxide is probably of minor importance to metal cycling in the deep ocean except in low oxygen environments.