SAMPLE ORIGIN SAMPLE PREP./SIZE PYROL. CONDITIONS TOTAL ION COUNTS
RIVER SEDIMENT (recent)
Si02 51%; MgO 4%; AI2O3 4%; CaO 4%; Kjeldahl nitrogen 0.08%; phosphorus 0.05%; freon solubles 1.7%
Natl. Bureau of Standards (SRM 1645), Washington, USA
suspension in methanol; 25 yg standard
remarks - The relatively strong intensities of sulphur-containing ion signals at m/z 34, 48, 64 and 76 are typical of organic materials exposed to aqueous environments. Note the relative monotony of the marked ion series, thus presenting a pattern not unlike some kerogen patterns (e.g. Spectrum F.12).
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