A method was developed for the analysis of long chain saturated fatty acids or their esters from tall oil or tall oil rosin. The method is specific for 18 through 28 even carbon number acids with a detection limit for each at 0.05% based on rosin. Ultraviolet detection is achieved through phenacyl derivatization. Omission of the saponification step allows selective determination of the free fatty acids.
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Michael G. Fatica (1989) studied this question.
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