Black carbon in marine sediments

被引：239

作者：

Middelburg, JJ ^{[1
]}

Nieuwenhuize, J ^{[1
]}

van Breugel, P ^{[1
]}

机构：

[1] Netherlands Inst Ecol, Ctr Estuarine & Coastal Ecol, NL-4400 AC Yerseke, Netherlands

来源：

MARINE CHEMISTRY | 1999年 / 65卷 / 3-4期

关键词：

black carbon; soot carbon; organic carbon; sediments; degradation; Black Sea; turbidite; North Sea; Scheldt Estuary; Eastern Mediterranean;

D O I：

10.1016/S0304-4203(99)00005-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Concentrations of black carbon were determined for a number of marine sediments. A comparison of black carbon based on thermal oxidation and hot concentrated nitric acid pretreatments revealed that the latter significantly overestimates combustion derived carbon phases. Black carbon accounts for about 15 to 30% of total organic carbon and therefore reduces the fraction of unidentified sedimentary organic carbon. Examination of a relict oxidation front in a Madeira Abyssal Plain turbidite provided the first evidence for significant black-carbon degradation (about 64%) in marine sediments given time (10-20 kyr) and oxygen exposure. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：245 / 252

页数：8

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