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    Methodology for sampling and analysis of lipids in aerosols from the remote marine atmosphere

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    WHOI-84-9.pdf (10.25Mb)
    Date
    1984-04
    Author
    Peltzer, Edward T.  Concept link
    Alford, Jame B.  Concept link
    Gagosian, Robert B.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/1346
    DOI
    10.1575/1912/1346
    Keyword
     Lipids; Aerosols; Marine 
    Abstract
    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.
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    • WHOI Technical Reports
    • Marine Chemistry and Geochemistry (MC&G)
    Suggested Citation
    Technical Report: Peltzer, Edward T., Alford, Jame B., Gagosian, Robert B., "Methodology for sampling and analysis of lipids in aerosols from the remote marine atmosphere", 1984-04, DOI:10.1575/1912/1346, https://hdl.handle.net/1912/1346
     

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