. Eighth International congress of applied chemistry : Washington and New York, September 4 to 13, 1912 ... -- . Eighth International TABLE III Determination of Added Tartaric Acid in Fruit Juices Polarization in 200 mm. TartaricAcid tubes * Difference Tartaric FruitJuice added — g. After treat- Solution between acidfound — gper 100 cc. per ment with freed from readings 100 cc. uranyl ace-tate—°V. tartaricacid — °V. Strawberry r\ tit + f\ HA it + a + a + f\ AO a + tt f\ o o +1
. Eighth International congress of applied chemistry : Washington and New York, September 4 to 13, 1912 ... -- . Eighth International TABLE III Determination of Added Tartaric Acid in Fruit Juices Polarization in 200 mm. TartaricAcid tubes * Difference Tartaric FruitJuice added — g. After treat- Solution between acidfound — gper 100 cc. per ment with freed from readings 100 cc. uranyl ace-tate—°V. tartaricacid — °V. Strawberry r\ tit + f\ HA it + a + a + f\ AO a + tt f\ o o + ft it f\ OA Raspberry + + it + ct + tt ti it Blackberry tt + a + a a a Calculated to concentration of the original Tartaric Acid. Grams Per 100 ex. THE DETERMINATION OF MALIC AND TARTARICACIDS IN THE SAME SOLUTION P. B. DunbarBureau of Chemistry, U. S. Department of Agriculture,Washington, D. C. Introduction The usual method for the determination of tartaric, citricand malic acids in the same solution is a modification of thatproposed by Schmidt and It depends on the precipi-tation of the acids in the form of calcium salts and the separa-tion of these by means of their solubilities in water and separations obtained in this way are far from sharp and theresults are usually unsatisfactory. It is the purpose of the present paper to present some prelim-inary notes on a new method for the determination of malic andtartaric acids in the same solution. While the work is far fromcomplete, it is hoped that the publication of the results so far ob-tained may be of some value a
Size: 1273px × 1963px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade19, booksubjectchemistry, bookyear1912
