H4arch 16, 1965 TABLE of CONTENTS
Space Sciences Laboratory University of California Berkeley, California 94720 GPO PRICE $ CFSTI PRICE(S1 $ ff 653 July 65 OCCURRENCE OF ISOPRENOID ALKANES IN A PRECAMBRIAN SEDIMENT by G. Eglinton, P. M. Scott, T. Belsky, A. L. Burlingame, W. Richter and M. Calvin Technical Report on NsG 101-61 Series No. 6, Issue No. 9 This work was supported by the U. S. National Aeronautics and Space Administration (NASA grant NsG 101-61) and by the U. S. Atomic Energy Commission. h4arch 16, 1965 TABLE OF CONTENTS Introduction, ...,. .......,l,......... ...r.....l.,.......,.. 1 Experimental .........,......,....". e... .,.,......,*....,. 4 Materials . , , . , e., , . , , , . , . , , , . , . ... 4 General ,C1...l...,..l..............,.......~~...~.~~....5 Treatment of Rocks . , . *,, . , , , . ,.. , , . , , , . , , . 6 Extraction ........t...........ll.~..........t...t ..... 7 Alumina Column Chromatography , , . , . , , . $. , . , . , 8 sieving .,.......,.I.......... '....Lt........,...,..,.. 0 Thin Layer Ghromatography . , , , . , . , , . , . , . , . 10 Preparative Gas-Liquid Chromatography . , ",. , , . , . , , , . 12 Analytical Gas-Liquid Chromatography . , . %. , , . , . *... 15 Spectrophotometry, , . * . 16 Mags Spectrometry , , . , . , . , *.. , , $. , . + , . 16 18 18 L 19 23 62-- 26 27 20 29 37 Acknowledgements ....................t.....,.,e .e,., ....... 38 Figuses *,. t.r...,...,............,..........t."t,.......~. 39 References .l...r.q.r ,...........,.......,.,......, .,...... 62 -1- lNTRODU CTION Two experimental approaches currently bear
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