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Extra resources for Analytical Techniques in Environmental Chemistry. Proceedings of the International Congress, Barcelona, Spain, November 1978

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Data from a previous storage stability study on a similar tissue homogenate also revealed an increase of approximately two times the total hydrocarbon value after a 40 day study. The reasons for this increase are currently under investigation. The percent relative standard deviations for the analyses of Alaskan and Santa Barbara mussels after the initial two months of storage were 14 percent and 18 percent, respectively. 5 percent for the Santa Barbara sample. The interlaboratory comparison results for total hydrocarbons in the GC elution range, total extractable hydrocarbons, and pristane/phytane ratio are given in Tables 3 and 4.

Connan (1977). Changes Tn composition of polycyclic alkanes by thermal maturation. In R. Campos and J . ), Advances in Organic Geochemistry 1975, 53-59. ENADIMSA. Van Dorsselaer, A . , P. Albrecht and G. Ourisson (1977). I d e n t i f i c a t i o n of novel 17a(H)-hopanes in shales, coals, l i g n i t e s , sediments and petroleum. France, ( 1 - 2 , P t . 2 ) , 165-170. P. E. Inkson (1976). The aerobic bacterial f l o r a of a raised bog. , 8, 453-460. 31 Patterns of Hydrocarbon Contamination in California Coastal Waters R.

The oven temperature was programmed from 40°C to 80°C at 2°/min. Gas Chromatography-Mass Spectrometry A l l samples were analysed using a Finnigan 9610 gas Chromatograph coupled d i r e c t l y to a Finnigan 4000 mass spectrometer. The Chromatograph was f i t t e d with an 0V-1 glass c a p i l l a r y column (20m) using helium (ca. 10 psig) c a r r i e r gas. Temperature programme conditions were 50°C to 260°IT~at 6°/min. Typical mass spectrometer conditions were: ion source temperature 200°C, electron energy 70 eV, filament current 430 yA.

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