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M/V Alvenus

Mail from WILEY  at 22:26 on 09/05/84 Copies sent to: TODD WILEY There appears to be no
easy, rapid and inexpensive way to analyze for dispersants in seawater. As an alternative
to the analyses of dispersants, analyses of dispersed oil may yield some useful
information. A suggested analytical protocal is as follows:  1) filter the water through
teflon filters to remove oily droplets;  2) extract the water with methylene chloride(
20-30ml CH2Cl2 to 100ml H2O);  3) concentrate the extract and displace with normal hexane;
4) fractionate the extract on silica gel into saturate(f1) and aromatic(f2) fractions;
5)analyze each fraction by capillary GC;  6)analyze the f2 fraction by GCMS for the 2, 3,
and 4 ring polynuclear aromatic hydrocarbons and their C1 to C3 alkyl homologs;  7)
compare results between water accomodated oil and water containing dispersed oil.