| Composition and characterization of colloidal organic matter in the coastal surface waters of Qingdao, China | |
| Liu, Chun-Ying1; Yang, Xiao-Man1,2; Yang, Gui-Peng1; Zhou, Li-Min1; Li, Pei-Feng1 | |
| 发表期刊 | MARINE CHEMISTRY
 |
| ISSN | 0304-4203 |
| 2010-08-20 | |
| 卷号 | 121期号:1-4页码:123-131 |
| 关键词 | Ultrafiltration Colloids Dissolved Organic Matter Carbohydrates Amino Acids Jiaozhou Bay |
| 产权排序 | [Liu, Chun-Ying; Yang, Xiao-Man; Yang, Gui-Peng; Zhou, Li-Min; Li, Pei-Feng] Ocean Univ China, Coll Chem & Chem Engn, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Peoples R China; [Yang, Xiao-Man] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China |
| 通讯作者 | Yang, GP, Ocean Univ China, Coll Chem & Chem Engn, Minist Educ, Key Lab Marine Chem Theory & Technol, 238 Songling Rd, Qingdao 266100, Peoples R China |
| 英文摘要 | The composition and characterization of dissolved organic matter (DOM) and colloid organic matter (COM) in the coastal surface waters of Qingdao, China were examined. Water samples were collected in Spring 2008 from the Jiaozhou Bay and its adjacent area and fractionated into total dissolved (<0.45 mu m), colloidal (10 kDa-0.45 mu m) and cutoff (<10 kDa) fractions with the cross-flow ultrafiltration (CFF) system. The excitation-emission-matrix (EEM) spectral properties, the absorbance values at 254 nm (A(254)) and dissolved organic carbon (DOC) of the DOM were observed having the colloidal ratios of 8.7%, 6.2%, and 2.2%, respectively, and exhibiting a decreasing trend. Total dissolved carbohydrates (TCHO) and total hydrolysable amino acids (THAA) comprised 24% of the bulk DOC. Among them, the free monosaccharides (MCHO) and dissolved combined amino acids (DCAA were the major fractions, followed by polysaccharides (PCHO) and dissolved free amino acids (DFAA). Colloidal TCHO and THAA concentrations were 3.2 mu M C and 0.3 mu M, respectively. They comprised similar to 35% of the colloid organic carbon (COC), among which PCHO and DCAA were the dominating fractions. The dissolved carbohydrates and amino acids are mostly concentrated in the cutoff fraction. The A(254) values and DOC concentrations inside the Jiaozhou Bay were apparently higher than those outside, while pH and salinity were slightly lower, which might be due to the influence of terrestrial input and the semi-enclosed bay. The distribution pattern of TCHO was found having basically the same as the distributions of A(254) and DOC. (C) 2010 Elsevier B.V. All rights reserved.; The composition and characterization of dissolved organic matter (DOM) and colloid organic matter (COM) in the coastal surface waters of Qingdao, China were examined. Water samples were collected in Spring 2008 from the Jiaozhou Bay and its adjacent area and fractionated into total dissolved (<0.45 mu m), colloidal (10 kDa-0.45 mu m) and cutoff (<10 kDa) fractions with the cross-flow ultrafiltration (CFF) system. The excitation-emission-matrix (EEM) spectral properties, the absorbance values at 254 nm (A(254)) and dissolved organic carbon (DOC) of the DOM were observed having the colloidal ratios of 8.7%, 6.2%, and 2.2%, respectively, and exhibiting a decreasing trend. Total dissolved carbohydrates (TCHO) and total hydrolysable amino acids (THAA) comprised 24% of the bulk DOC. Among them, the free monosaccharides (MCHO) and dissolved combined amino acids (DCAA were the major fractions, followed by polysaccharides (PCHO) and dissolved free amino acids (DFAA). Colloidal TCHO and THAA concentrations were 3.2 mu M C and 0.3 mu M, respectively. They comprised similar to 35% of the colloid organic carbon (COC), among which PCHO and DCAA were the dominating fractions. The dissolved carbohydrates and amino acids are mostly concentrated in the cutoff fraction. The A(254) values and DOC concentrations inside the Jiaozhou Bay were apparently higher than those outside, while pH and salinity were slightly lower, which might be due to the influence of terrestrial input and the semi-enclosed bay. The distribution pattern of TCHO was found having basically the same as the distributions of A(254) and DOC. (C) 2010 Elsevier B.V. All rights reserved. |
| 文章类型 | Article |
| 资助机构 | National Natural Science Foundation of China [40706040, 40525017]; Natural Science Foundation of Shandong [Y2008E04]; Scientific Research Promotional Fund for Middle-age and Young Scientists of Shandong Province [2007BS08015]; Changjiang Scholars Programme ; Ministry of Education of China ; "Taishan Scholar" Special Research Fund of Shandong Province, China |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | CROSS-FLOW FILTRATION ; GULF-OF-MEXICO ; MOLECULAR-WEIGHT ; TRACE-METALS ; CARBOHYDRATE CONCENTRATIONS ; CHEMICAL-CHARACTERIZATION ; MARINE ENVIRONMENTS ; NARRAGANSETT BAY ; AMINO-ACIDS ; SEAWATER |
| 研究领域[WOS] | Chemistry ; Oceanography |
| WOS记录号 | WOS:000286559100012 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/4423 |
| 专题 | 中国科学院烟台海岸带研究所知识产出 |
| 作者单位 | 1.Ocean Univ China, Coll Chem & Chem Engn, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Chun-Ying,Yang, Xiao-Man,Yang, Gui-Peng,et al. Composition and characterization of colloidal organic matter in the coastal surface waters of Qingdao, China[J]. MARINE CHEMISTRY,2010,121(1-4):123-131. |
| APA | Liu, Chun-Ying,Yang, Xiao-Man,Yang, Gui-Peng,Zhou, Li-Min,&Li, Pei-Feng.(2010).Composition and characterization of colloidal organic matter in the coastal surface waters of Qingdao, China.MARINE CHEMISTRY,121(1-4),123-131. |
| MLA | Liu, Chun-Ying,et al."Composition and characterization of colloidal organic matter in the coastal surface waters of Qingdao, China".MARINE CHEMISTRY 121.1-4(2010):123-131. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Composition and char（705KB） | 限制开放 | -- | 请求全文 | |||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论