Sources and Variation Characteristics of Dissolved Lipid Biomarkers in a Typical Karst Underground River

Water samples in Qingmuguan underground river were collected to determine the concentration of dissolved lipids, and their sources, composition and migration characteristics in underground river were studied. The results were obtained as follows. (1) The average content of various dissolved lipids d...

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Published inHuanjing kexue Vol. 37; no. 5; p. 1814
Main Authors Liang, Zuo-bing, Sun, Yu-chuan, Li, Jian-hong, Wang, Zun-bo, Xje, Zheng-lan, Zhang, Mei, Liao, Yu, Jiang, Ze-li
Format Journal Article
LanguageChinese
Published China 15.05.2016
Subjects
Alkanes - analysis
China
Environmental Monitoring
Fatty Acids - analysis
Groundwater - chemistry
Rivers - chemistry
China
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Summary:Water samples in Qingmuguan underground river were collected to determine the concentration of dissolved lipids, and their sources, composition and migration characteristics in underground river were studied. The results were obtained as follows. (1) The average content of various dissolved lipids decreased with increasing distance of migration in Qingmuguan underground river, and the most distinctive was dissolved saturated straight chain fatty acids with its content decreasing by about 81.71%, from the initial 5,704 ng · L⁻¹ to 1,043 ng · L⁻¹. (2) N-alkane could indicate the sources of dissolved organic matter in underground river, but saturated straight chain fatty acid and fatty alcohol had the advantage in indicating algae, bacteria and other microorganisms. (3) With the increasing migration distance of Qingmuguan underground river, the input type of dissolved organic matter in underground river was different, which might be resulted from the heterogeneity of karst surface. (4) In ternary plot of alkane
ISSN:0250-3301
DOI:10.13227/j.hjkx.2016.05.027