| Decomposition of algal lipids in clay-enriched marine sediment under oxic and anoxic conditions | |
| Lue Dongwei1,2,3; Song Qian1; Wang Xuchen1,4 | |
| 2010 | |
| 发表期刊 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 卷号 | 28期号:1页码:131-143 |
| 文章类型 | Article |
| 摘要 | A series of laboratory incubation experiments were conducted to examine the decomposition of algal organic matter in clay-enriched marine sediment under oxic and anoxic conditions. During the 245-day incubation period, changes in the concentrations of TOC, major algal fatty acid components (14: 0, 16: 0, 16: 1, 18: 1 and 20: 5), and n-alkanes (C(16)-C(23)) were quantified in the samples. Our results indicate that the organic matters were degraded more rapidly in oxic than anoxic conditions. Adsorption of fatty acids onto clay minerals was a rapid and reversible process. Using a simple G model, we calculated the decomposition rate constants for TOC, n-alkanes and fatty acids which ranged from 0.017-0.024 d(-1), 0.049-0.103 d(-1) and 0.011 to 0.069 d(-1), respectively. Algal organic matter degraded in two stages characterized by a fast and a slow degradation processes. The addition of clay minerals montmorillonite and kaolinite to the sediments showed significant influence affecting the decomposition processes of algal TOC and fatty acids by adsorption and incorporation of the compounds with clay particles. Adsorption/association of fatty acids by clay minerals was rapid but appeared to be a slow reversible process. In addition to the sediment redox and clay influence, the structure of the compounds also played important roles in affecting their degradation dynamic in sediments. |
| 关键词 | Algal Organic Matter Decomposition Marine Sediments Clay Minerals |
| DOI | 10.1007/s00343-010-9226-8 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000275654100018 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/32718 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Marine Biogeochem Lab, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.China Agr Univ Yantai, Coll Food & Wine, Yantai 264670, Peoples R China 4.Univ Massachusetts, Dept Environm Earth & Ocean Sci, Boston, MA 02125 USA |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Lue Dongwei,Song Qian,Wang Xuchen. Decomposition of algal lipids in clay-enriched marine sediment under oxic and anoxic conditions[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2010,28(1):131-143. |
| APA | Lue Dongwei,Song Qian,&Wang Xuchen.(2010).Decomposition of algal lipids in clay-enriched marine sediment under oxic and anoxic conditions.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,28(1),131-143. |
| MLA | Lue Dongwei,et al."Decomposition of algal lipids in clay-enriched marine sediment under oxic and anoxic conditions".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 28.1(2010):131-143. |
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