Chemistry: analytical and immunological testing – Geochemical – geological – or geothermal exploration – Using chemical tracers
Patent
1996-02-28
1998-02-03
Warden, Robert J.
Chemistry: analytical and immunological testing
Geochemical, geological, or geothermal exploration
Using chemical tracers
436 20, 436172, G01N 2164
Patent
active
057143870
ABSTRACT:
A method of determining the dosage of dust control agents applied to coal is disclosed. The method comprises the steps of: (1) treating the coal, with a small amount of a dust control agent containing a compatible fluorescent dye; (2) extracting the treated coal with a polar solvent for the freeze-release agent and determining the fluorescence of such extract; (3) extracting a similar treated coal sample to which a known amount of the dust control agent has been further added and determining the fluorescence of this extract; (4) setting up a proportionality between the fluorescence values of extracts (2) and (3) with the corresponding dosages of dust control agents and solving for the unknown dosage originally applied to the coal.
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Fowee Roger W.
Martin J. David
Phillips Everett C.
Carrillo Sharidan
Drake James J.
Miller Robert A.
Nalco Chemical Company
Warden Robert J.
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