Tob. Sci., 1977, 21-19, p. 65-68, ISSN. 0082-4523
Automated determination of citrate in cigarette paper
Philip Morris U.S.A. Research Center, Richmond, Virginia USA
Citrates as citric acid in cigarette paper are simultaneously extracted and esterified with sulfuric acid-methanol solution. In the case of paper taken from cigarettes, a wash with caustic-methanol is necessary to remove esters or esterifiable...