The Importance of H in Particulate Organic Matter Stoichiometry, Export and Energy Flow.
The Importance of H in Particulate Organic Matter Stoichiometry, Export and Energy Flow.
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DOI：
10.3389/fmicb.2017.00826
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发表时间：
2017
影响因子：
5.2
通讯作者：
Grabowski E
中科院分区：
文献类型：
--
作者：
Karl DM;Grabowski E
海洋生态化学计量学在过去的二十年里发展迅速，并继续处于微生物海洋学的前沿。大多数研究工作集中在碳（C）和氮（N）元素上，较少关注磷（P）元素，很少考虑氢（H）或有机物池的氧化还原状态，尽管H是地球化学中最丰富的元素，也可能是最重要的元素。获得有机物的H含量的准确估计，无论是在悬浮或下沉颗粒，是一个重大的分析挑战。虽然许多水产科学实验室可以使用商业“C-H-N元素分析仪”，但由于难以获得H的准确估计值，因此很少有研究人员报告H值。由于有机化合物的H：C比例差异很大，因此其能量含量也很大，因此最终需要测量H与C特定热量估计相结合，以更全面地了解生态系统动态。
The discipline of marine ecological stoichiometry has progressed rapidly over the past two decades, and continues to be at the forefront of microbial oceanography. Most of this effort has been focused on the elements carbon (C) and nitrogen (N), and to a lesser extent phosphorus (P), with little consideration of hydrogen (H), or the redox state of the organic matter pools despite the fact that H is the most abundant, and possibly the most important, element in biogeochemistry. Obtaining accurate estimates of the H content of organic matter, either in suspended or sinking particles, is a major analytical challenge. While many aquatic science laboratories have access to commercial “C–H–N elemental analyzers,” few investigators report H values due to analytical difficulties in obtaining accurate estimates of H. Because organic compounds vary considerably in their H:C ratio and therefore in their energy content, measurements of H combined with C-specific caloric estimates will ultimately be required for a more comprehensive understanding of ecosystem dynamics.