气候变化领域集成服务门户(CCPortal): Chemical characterization of dissolved organic compounds from coastal sea surface microlayers (Baltic Sea, Germany)

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.845840
	Chemical characterization of dissolved organic compounds from coastal sea surface microlayers (Baltic Sea, Germany)
	van Pinxteren; Manuela; Müller; Conny; Iinuma; Yoshiteru; Stolle; Christian; Herrmann; Hartmut
发布日期	2012-04-29
数据集类型	dataset
英文简介	The physicochemical properties of the sea surface microlayer (SML), i.e. the boundary layer between the air and the sea, and its impact on air-sea exchange processes have been investigated for decades. However, a detailed description about these processes remains incomplete. In order to obtain a better chemical characterization of the SML, in a case study three pairs of SML and corresponding bulk water samples were taken in the southern Baltic Sea. The samples were analyzed for dissolved organic carbon and dissolved total nitrogen, as well as for several organic nitrogen containing compounds and carbohydrates, namely aliphatic amines, dissolved free amino acids, dissolved free monosaccharides, sugar alcohols, and monosaccharide anhydrates. Therefore, reasonable analytical procedures with respect to desalting and enrichment were established. All aliphatic amines and the majority of the investigated amino acids (11 out of 18) were found in the samples with average concentrations between 53 ng/l and 1574 ng/l. The concentrations of carbohydrates were slightly higher, averaging 2900 ng/l. Calculation of the enrichment factor (EF) between the sea surface microlayer and the bulk water showed that dissolved total nitrogen was more enriched (EF: 1.1 and 1.2) in the SML than dissolved organic carbon (EF: 1.0 and 1.1). The nitrogen containing organic compounds were generally found to be enriched in the SML (EF: 1.9-9.2), whereas dissolved carbohydrates were not enriched or even depleted (EF: 0.7-1.2). Although the investigated compounds contributed on average only 0.3% to the dissolved organic carbon and 0.4% to the total dissolved nitrogen fraction, these results underline the importance of single compound analysis to determine SML structure, function, and its potential for a transfer of compounds into the atmosphere.
空间范围	Latitude: 54.316670 * Longitude: 12.083330
时间范围	2006-07-13T11:30:00 - 2008-05-09T10:00:00
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/215457
推荐引用方式 GB/T 7714	van Pinxteren,Manuela,Müller,et al. Chemical characterization of dissolved organic compounds from coastal sea surface microlayers (Baltic Sea, Germany).2012-04-29.https://doi.org/10.1594/PANGAEA.845840.