期刊
GEOPHYSICAL RESEARCH LETTERS
卷 37, 期 -, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2010GL043963
关键词
-
资金
- Keck Carbon Cycle AMS Lab at UC Irvine
- Jenkins Foundation
- US-NSF OCE division
Produced on land by incomplete combustion of organic matter, black carbon (BC) enters the ocean by aerosol and river deposition. It has been postulated that BC resides in the marine dissolved organic carbon (DOC) pool before sedimentary deposition and may attribute to its great C-14 age (1500-6500 C-14 years). Here we report the first radiocarbon measurements of BC in high molecular weight DOC (UDOM). BC exported from rivers is highly aromatic and <500 C-14 years old, while open ocean samples contain less aromatic BC and have an age of 18,000 +/- 3,000 C-14 years. The low abundance of BC in UDOM (0.5-3.5%) suggests that it is more labile than presently believed and/or the low molecular weight DOC contains a larger proportion of aged BC. Citation: Ziolkowski, L. A., and E. R. M. Druffel (2010), Aged black carbon identified in marine dissolved organic carbon, Geophys. Res. Lett., 37, L16601, doi:10.1029/2010GL043963.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据