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Figure 9. Gas chromatograms of aliphatic and aromatic hydrocarbons of surface sediments from inner Discharge Canal. The sam-pling site is in the process water discharge drainage canal for an oil refinery in the Bayou Casotte region. The integers in aliphaticchromatograms refer to n-alkane carbon number. Other abbreviations are: Internal standard I.S.! for arornatics, n-eicosane;I.S. aliphatics!, fluorene; 4MB, tetramethylbenzene; NAP, naphthalene; MNA, methytnaphthalene; DIVIN, dimethylnaphthalene;ACE, acenaphthene; DBF, dibenzofuran; TIVIN, trimethylnaphthalene; DBT, dibenzothiophene; FLU, fluorene; IVIDB, methyldi-benzofuran; DMD, dimethyldibenzofuran; PHE, phenanthrene; ANT, anthracene; TMD, trimethyldibenzofuran; POI, polyolefinicisoprenoid; F LA, flu orant hene; P RY, pyrene; B 1F, 23benzoflu oranthene; BZA, benzaanthracene; CH R, chrysene. Gas chromato-graphic conditions are described in the text.

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Figure 10. Gas chromatograms of aliphatic and aromatic hydrocarbons of surface sedimentsfrom Mary Walker Bayou. The sampling site is in the West Pascagoula River near several boatmarinas. Abbreviations: Internal standard I.S.! aromatics, n-eicosane; I.S, aiiphatics!, fluorene;4MB, tetramethylbenzene; NAP, naphthalene; MhlA, methylnaphthalene; DMN, dimethylnaph-thalene; ACE, acenaphthene; DBF, dibenzofuran; TMN, trimethylnaphthalene; DBT, dibenzo-thiophene; FLU, fluorene; IVIDB, methyldibenzofuran; DMD, dimethyldibenzofuran; PHE,phenanthrene; ANT, anthracene; TMD, trimethyldibenzofuran; POI, polyolefinic isoprenoid;FLA, fluoranthene; PRY, pyrene; BZF, 2,3-benzofluoranthene; BZA, benz-a-anthracene; CHR,chry ene. Gas chromatographic conditions are described in the text.

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Figure 11. Gas chromatograms of aliphatic and aromatic hydrocarbons of surface sediments fromGriffin Point. The sampling site is at the confluence of Escatawpa and East Pascagoula riversand near a sewage outfall. Abbreviations: internal standard I,S,! aromatics, n-eicosane; I.S. aliphatics!, fluorene; 4MB, tetramethylbenzene; NAP, naphthalene; IVINA, methylnaphthalene;DIVIN, dimethylnaphthalene; ACE, acenaphthene; DBF, dibenzofuran; TIVIN, trimethylnaph-thaiene; DBT, dibenzothiophene; FLU, fluorene; MDB, methyldibenzofuran; DMD, dimethyl-dibenzofuran; PHE, phenanthrene; ANT, anthracene; TIVID, trimethyldibenzofuran; POI, poly-olefinic isoprenoid; FLA, fluoranthene; PRY, pyrene; BZF, 2,3-benzofluoranthene; BZA, benz-a-anthracene; CHR, chrysene. Gaschromatographic conditions are described in the text.

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Figure 12. Gas chromatograms of aliphatic and aromatic hydrocarbons of surface sediments from Cooling Tower Canal in BayouCasotte. Abbreviations: Internal standard I.S.! for aromatics, n-eicosane; I,S. aliphatics!, fluorene; 4MB, tetramethylbenzene;NAP, naphthalene; MNA, methylnaphthalene; DMN, dimethylnaphthalene; ACE, acenaphthene; DBF, dibenzofuran; TMN, tri-methylnaphthalene; DBT, dibenzothiophene; FLU, fluorene; MDB, methyldibenzofuran; DMD, dimethyldibenzofuran; PHE,phenanthrene; ANT, anthracene; TIVID, trimethyldibenzofuran; POI, polyolefinic isoprenoid; FLA, fiuoranthene; PYR, pyrene;BZF, 2,3-benzofluoranthene; BZA, benz-a-anthracene; CHR, chrysene.

PHENOLIC DISTRIBUTIONS

p � HYDROXYL SYRINGYL VANILLYL

5AAR INE

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Figure l3, Stylized gas chromatograms of lignin structural units in vascular and nonvascular plants. The specific names within thethree groups p-hydroxy, syringyl and vanillyl! of aldehydes, ketones and acids are listed in the test and shown in Figure 15,

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Figure 14. Analysis procedure for sedimentary lignin residues.

TEST FORPROPER pH

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