浙江南部近海沉积物柱状样中脂类生物标志物的组成及形态分布

王江涛; 杨庶; 谭丽菊; 胡佶

浙江南部近海沉积物柱状样中脂类生物标志物的组成及形态分布

中国海洋大学化学化工学院,山东青岛 266100

基金项目: 国家重点基础研究发展计划(2010CB428701;2001CB409703);国家自然科学基金项目(41076065)。

计量
- 文章访问数: 1393
- HTML全文浏览量: 32
- PDF下载量: 1316
- 被引次数: 0
出版历程
- 收稿日期: 2010-09-03

Composition and form distribution of lipids biomarkers in a sediment core from southern coastal area of Zhejiang Province

College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China

摘要

摘要: 分析了浙江南部近海(东海陆架泥质区)沉积物柱状样中游离态和碱不稳定结合态脂类生物标志物的组成。沉积物中的脂肪酸呈现以C16脂肪酸为主峰的单峰形分布趋势,具明显偶碳优势,除表层沉积物中脂肪酸以游离态为主外,结合态为柱状样中脂肪酸的主要存在形态,脂肪酸的垂直分布主要由降解作用控制;以甾醇和脂肪醇为主体的醇酮组分主要以游离态形式存在于沉积物中,但植醇主要分布于结合态中,降解作用同样是决定醇酮组分垂直分布的主要因素,只是对于烯酮来说,东海水体的富营养化很可能也极大影响了其垂直分布,另外在1950-1969年左右的沉积物中,多种脂类物质的含量出现异常,经分析这很可能反映了1954年长江特大洪水和1969年长江中下游洪水对当时东海上层水体生态系统的影响;烷烃呈现以C29,C31和C17烷烃为主峰的双峰形分布趋势,游离态为烷烃的主要存在形式,且UCM(不可分辨成分)峰仅出现在游离态烷烃组分的气相色谱图中。
- 东海陆架泥质区 /
- 沉积物 /
- 脂类生物标志物 /
- 形态分布
Abstract: Previous studies show that: the composition and form distribution of lipids vary distinctly in different sediments, so to study the composition and form distribution of lipids biomarkers in southern coastal area of Zhejiang Province (the mud areas of the East China Sea shelf), a sediment core is collected, free and OH^--labile lipids of the core are released via sequential treatments. Results show that fatty acids are in obvious even carbon number predominance, and characteristic of single peak with C16-fatty acids as the main peak, the vertical content distribution of fatty acids is mainly controlled by degradation, bound form is the main existent form of fatty acids in the core except in surficial sediment, where fatty acids mainly exist in free forms. A&K (fractions of alcohols and ketones) which are constituted mainly by sterols and fatty alcohols exist as free forms in majority, but phytols perform distinctly which mainly exist in bound forms, degradation mightily affects their vertical content distributions, but for ketones, eutrophication of the upper water in the East China Sea probably also play an important role, and in sediments of about 1950-1969, the contents of many lipids vary abnormally, we consider that this may illuminate the possible change of the ecosystem of upper water in the East China Sea caused by Changjiang River floods in 1954 and 1969. Hydrocarbons are characteristic of double peaks, and the concentration of C29,C31 are higher than other hydrocarbons, hydrocarbons are mainly exist in free forms, and UCM (Unresolved Complex Mixtures) peaks only emerge in chromatograms of free hydrocarbons fractions. Fatty acids and A&K in each form are mainly from marine sources while terrestrial input is the main source of hydrocarbons.
- the mud areas of the East China Sea shelf /
- sediments /
- lipids biomarkers /
- form distribution

HTML全文

参考文献(26)

EGLINTON G, BRADSHAW S A, ROSELL A, et al. Molecular record of secular sea surface temperature changes on 100-year timescales for glacial terminations[J]. Nature, 1987, 356: 423-426.

ZHANG Z H, ZHAO M X, EGLINTON G, et al. Leaf wax lipids as paleovegetational and paleoenvironmental proxies for the Chinese Loess Plateau over the last 170 kyr[J]. Quat Sci R, 2006, 25: 575-594.

SCHUBERT C J, VILLANUEVA J, CALVERT S E, et al. Stable phytoplankton community structure in the Arabian Sea over the past 200,000 years[J]. Nature, 1998, 394: 563-566.

WERNE J P, HOLLANDER D J, LYONS T W, et al. Climate-induced variations in productivity and planktonic ecosystem structure from the Younger Dryas to Holocene in the Cariaco Basin, Venezuela[J]. Paleoceanog, 2000, 31: 577-588.

BARAKAT A O, RULLKOTTER J. Extractable and bound fatty acids in core sediments form the Nordlinger Ries, southern Germany[J]. Fuel, 1995, 74: 416-425.

WAKEHAM S G. Monocarboxylic, dicarboxylic and hydroxyl acids released by sequential treatments of suspended particles and sediments of the Black Sea[J]. Org Geochem, 1999, 30: 1059-1074.

SHI W, SUN M Y, MOLINA M, et al. Variability in the distribution of lipid biomarkers and their molecular isotopic composition in Altamaha estuarine sediments: implications for the relative contribution of organic matter from various sources[J]. Org Geochem, 2001, 32: 453-467.

AMBLES A, DUPAS G, JACQUESY J C. Solubilization of imahdit (Morocco) oil shale kerogen catalysed by 18-crown-6[J]. Tetrahedr L, 1987, 28: 6449-6452.

GOOSSENS H, DUREN R R, De LEEUW J W, et al. Lipids and their mode of occurrence in bacteria and sediments-Ⅱ. Lipids in the sediment of a stratified, freshwater lake[J]. Org Geochem, 1989, 14: 27-41.

GOOSSENS H, RIJPSTRA W I C, DUREN R R, et al. Bacterial contribution to sedimentary organic matter; a comparative study of lipid moieties in bacteria and recent sediments[J]. Org Geochem, 1986, 10: 683-696.

KAWAMURA K, ISHIWATARI R. Tightly bound aliphatic acids in Lake Biwa sediments: Their origin and stability[J]. Org Geochem, 1984, 7: 121-126.

LARGEAU C, DERENNE S, CASADEVALL E, et al. Pyrolysis of immature Torbanite and of the resistant biopolymer (PRBA) isolated from extant alga Botryococcus braunii. Mechanism of formation and structure of torbanite[J]. Org Geochem, 1986, 10: 1023-1032.

KAWAMURA K, TANNENBAUM E. Long chain carboxylic acids in pyrolysates of Green River kerogen[J]. Org Geochem, 1986, 10: 1059-1065.

胡建芳. 3万年来南沙海区古气候、古环境演变:分析有机地球化学研究 .广州:中国科学院广州地球化学研究所,2001.

ZEGOUAGH Y, DERENNE S, LARGEAU C, et al. A geochemical investigation of carboxylic acids released via sepuential treatments of two surficial sediments from the Changjing delta and East China Sea[J]. Org Geochem, 2000, 31: 375-388.

朱纯, 潘建明, 卢冰, 等. 长江口及邻近海域现代沉积物中正构烷烃分子组合特征及其对有机碳运移分布的指示[J]. 海洋学报, 2005, 27: 59-67.

郭志刚, 杨作升, 陈致林, 等. 东海陆架泥质区沉积有机质的物源分析[J]. 地球化学, 2001, 30: 416-424.

JENG W L, HUH C A. Lipids in suspended matter and sediments from the East China Sea shelf[J]. Org Geochem, 2004, 35: 647-660.

VOLKMAN J K, EGLINTON G, CORNER E D S, et al. Long-chain alkenes and alkenones in the marine coccolithophorid Emiliania huxleyi[J].Paleoceanog, 1980, 19: 2619-2622.

VOLKMAN J K, BARRETT S M, DUNSTAN G A, ed al. C30-C32 alkyl diols and unsaturated alcohols in microalgae of the class Eustigmatophyceae[J]. Org Geochem, 1992, 18: 131-138.

陈镇东. 三峡大坝会减小东海的上升流和生产力吗？--敬复王保栋、孙霞两位指教[J]. 海洋科学进展, 2008, 26: 109-111.

DING H B, SUN M Y. Biochemical degradation of algal fatty acids in oxic and anoxic sediment-seawater interface systems: effects of structural association and relative roles of aerobic and anaerobic bacteria[J]. Mar Chem, 2005, 93: 1-19.

HARRISON P J, HU M H, YANG Y P, et al. Phosphate limitation in estuarine and coastal waters of China[J]. J Exp Mar Biol Ecol, 1990, 140: 79-87.

郭玉洁, 杨则禹. 长江口区浮游植物的数量变动及生态分析[J]. 海洋科学集刊, 1992, 33: 167-189.

宁修仁, 史君贤, 蔡昱明, 等. 长江口和杭州湾海域生物生产力锋面及其生态学效应[J]. 海洋学报, 2004, 26: 96-106.

卢冰, 张海生, 武光海, 等. 楚科奇海和白令海沉积地层中甾醇的物源组成及其周边气候效应[J]. 极地研究, 2005, 17: 183-192.

施引文献

资源附件(0)

访问统计