Methodology for sampling and analysis of lipids in aerosols from the remote marine atmosphere
Peltzer, Edward T.
Alford, Jame B.
Gagosian, Robert B.
MetadataShow full item record
A procedure is described for the collection of remote marine aerosol samples by high-volume filtration, cascade impaction, dry fallout collection and rain. Samples were analyzed quantitatively for five classes of naturally occurring lipids (n-alkanes, wax esters, fatty alcohols, sterols, and fatty acids) and polycyclic aromatic hydrocarbons (PAHs). Air samples (4,000-10,000 m3) were collected on glass fiber filters under automatic control. Rain samples of 1-5 L were collected on an event basis. Filters and rain samples were extracted with methylene chloride. The extracts were fractionated into discrete chemical classes by silca-gel absorption chromatography. The fractions were derivatized if necessary and analyzed by HRGC and HRGC/MS. A second fiter extraction was required for fatty acid salt analysis. Internal standards were used to quantify recoveries and concentrations. Mean recoveries relative to the internal standards were 96.5% for C12-C36 n-alkanes, 96.4% for C12-C30 n-fatty acids, 92.5% for C12-C30 n-fatty alcohols and 93.3% for cholesterol. Typical blanks and concentrations for remote marine aerosol and rain samples are described and compared with other methods used in coastal marine, rural and suburban sampling locations.
Showing items related by title, author, creator and subject.
Methods for the sampling and analysis of marine aerosols : results from the 2008 GEOTRACES aerosol intercalibration experiment Morton, Peter L.; Landing, William M.; Hsu, Shih-Chieh; Milne, Angela; Aguilar-Islas, Ana M.; Baker, Alexander R.; Bowie, Andrew R.; Buck, Clifton S.; Gao, Yuan; Gichuki, Susan; Hastings, Meredith G.; Hatta, Mariko; Johansen, Anne M.; Losno, Remi; Mead, Chris; Patey, Matthew D.; Swarr, Gretchen J.; Vandermark, Amanda; Zamora, Lauren M. (Association for the Sciences of Limnology and Oceanography, 2013-02)Atmospheric deposition of trace elements and isotopes (TEI) is an important source of trace metals to the open ocean, impacting TEI budgets and distributions, stimulating oceanic primary productivity, and influencing ...
Transfer of organic carbon through marine water columns to sediments – insights from stable and radiocarbon isotopes of lipid biomarkers Wakeham, Stuart G.; McNichol, Ann P. (Copernicus Publications on behalf of the European Geosciences Union, 2014-12-10)Compound-specific 13C and 14C compositions of diverse lipid biomarkers (fatty acids, alkenones, hydrocarbons, sterols and fatty alcohols) were measured in sinking particulate matter collected in sediment traps and from ...
Transcriptional profiling of reproductive development, lipid storage and molting throughout the last juvenile stage of the marine copepod Calanus finmarchicus Tarrant, Ann M.; Baumgartner, Mark F.; Hansen, Bjørn Henrik; Altin, Dag; Nordtug, Trond; Olsen, Anders J. (BioMed Central, 2014-12-16)Calanus finmarchicus, a highly abundant copepod that is an important primary consumer in North Atlantic ecosystems, has a flexible life history in which copepods in the last juvenile developmental stage (fifth copepodid, ...