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DETERMINATION OF THE FORMS OF CARBON IN GEOLOGIC MATERIALS
Author(s) -
JACKSON Lany L.,
ROOF Steven R.
Publication year - 1992
Publication title -
geostandards newsletter
Language(s) - English
Resource type - Journals
eISSN - 1751-908X
pISSN - 0150-5505
DOI - 10.1111/j.1751-908x.1992.tb00495.x
Subject(s) - coulometry , combustion , carbonate , carbon fibers , titration , chemistry , calibration , inorganic chemistry , mineralogy , materials science , electrochemistry , organic chemistry , electrode , statistics , mathematics , composite material , composite number
Total carbon was determined in 30 geological reference materials by combustion/IR and combustion/coulometry methods. The combustion/coulometric method does not require empirical calibration and was found to be more precise than the combustion/IR method despite the use of smaller sample sizes. Carbonate carbon was determined by coulometric titration of acid‐evolved CO 2 . Non‐carbonate carbon was calculated as the difference between the total and carbonate carbon contents.