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Organically bound oxygen is one of the most abundant elements in coal, yet the amount and quality of data concerning its abundance, mode of occurrence and processing behavior are relatively lean. The rectification of this problem will require the development of appropriate methods of oxygen determination which have been lacking in the past. The stature of coal science today demands a technique for organic oxygen determination other than the outdated and error-prone oxygen-by-difference calculation. This investigation addresses this need and intends to develop methods suitable not only for total organic oxygen determination, but also for determination of oxygen functionality. The methods and techniques developed will then be applied to practical needs in characterizing the oxygen geochemistry of coal and the evaluation of coal drying on liquefaction behavior. 2 references, 3 figures, 4 tables. (ERA citation 09:045351)