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Microestimation of intact phenylmercury compounds in animal tissue
ABSTRACTS
597
a modification of the Van der Meulen method and requires no ashing process. Differentiation between bromide ion and organically bound bromide is possible. Bromide content of urine and blood are determined. Microestimation of intact phenylmercury compounds in animal tissue, V. L. Miller, A method for the deterD. Lillis, and E. Csonka, Anal. Chem., 30, 1705 (1958). mination of 5-20 pg. of phenylmercury acetate in urine and animal tissue is described. After saponification and oxidation the phenylmercury is extracted in chloroform and reacted with dithiaone reagent. Color density is measured at 620 mr. Improved n-ethylcarbazole determination of carbohydrates with emphasis on sea water samples, Z. P. Zein-Eldin and B. Z. May, Anal. Chem., 30, 1935 (1958). The n-ethylcarbazole method for determining carbohydrate content of sea water The method and biological fluids is modified to increase its sensitivity threefold. will accurately measure carbohydrate at concentrations of 1 pg./ml. sample without interference from high salt concentration. Microdetermination qf acetone in biological fluids, M. U. Tsao, G. H. Lowrey, and A method for microdetermina11:. J. Graham, Anal. Chem., 31, 311-14 (1959). tion of acetone in biological fluids involves diffusion of acetone from sample on filter paper strip into 2,Pdinitrophenylhydrasine solution in photometer tube. Color after sodium hydroxide addition is read calorimetrically. Enzymatic microdetermination of glucose in blood and urine, L. L. Salomon and J. A procedure for determination of E. Johnson, Anal. Chem., 31, 453-55 (1959). glucose in blood and urine involves an enzymatically catalyzed reaction sequence in which glucose is oxidized with glucose oxidase yielding hydrogen peroxide; the latter oxidizes o-tolitine through the action of horse radish peroxidase Rapid paper chromatogaprhic microassay of free and ester cholesterol of blood, M. L. Quaife, R. P. Geyer, and H. R. Bolliger, Anal. Chem., 31, 950-54 (1959). The sample is applied to Whatman No. 1 filter paper impregnated with zinc carbonate, and chromatographed with 1.5y0 ethyl ether in cyclohexane. Micromethod for the determination C. Boudene, Ann. biol. clin., 16, 04 pg. Hg is determined by CHCls. Effectiveness of EDTA
of mercury in urine, R. Fabre, R. Truhaut, and 286-98 (1958). In a micromethod for mercury, a titration with di-&naphthylthiocarbazone in with interfering Cu, Au, Pd, and Bi is discussed.
Bactericidal action of salts of certain rare earth metals, A. Muroma, Ann. Med. Exptl. et Biol. Fennial (Helsinki), 36, Suppl. 6-54 pp. (1958). The toxic action of the chlorides of Ce, Se, Y, La, Pr, Nd, Sm, ELI, and Yb on 24 species of bacteria was studied. A micromethod for the determination of serum levels of the tetracyclines and other antibiotics using capillary blood, D. L. Schelhart and H. W. McFadden, Jr.,
597
a modification of the Van der Meulen method and requires no ashing process. Differentiation between bromide ion and organically bound bromide is possible. Bromide content of urine and blood are determined. Microestimation of intact phenylmercury compounds in animal tissue, V. L. Miller, A method for the deterD. Lillis, and E. Csonka, Anal. Chem., 30, 1705 (1958). mination of 5-20 pg. of phenylmercury acetate in urine and animal tissue is described. After saponification and oxidation the phenylmercury is extracted in chloroform and reacted with dithiaone reagent. Color density is measured at 620 mr. Improved n-ethylcarbazole determination of carbohydrates with emphasis on sea water samples, Z. P. Zein-Eldin and B. Z. May, Anal. Chem., 30, 1935 (1958). The n-ethylcarbazole method for determining carbohydrate content of sea water The method and biological fluids is modified to increase its sensitivity threefold. will accurately measure carbohydrate at concentrations of 1 pg./ml. sample without interference from high salt concentration. Microdetermination qf acetone in biological fluids, M. U. Tsao, G. H. Lowrey, and A method for microdetermina11:. J. Graham, Anal. Chem., 31, 311-14 (1959). tion of acetone in biological fluids involves diffusion of acetone from sample on filter paper strip into 2,Pdinitrophenylhydrasine solution in photometer tube. Color after sodium hydroxide addition is read calorimetrically. Enzymatic microdetermination of glucose in blood and urine, L. L. Salomon and J. A procedure for determination of E. Johnson, Anal. Chem., 31, 453-55 (1959). glucose in blood and urine involves an enzymatically catalyzed reaction sequence in which glucose is oxidized with glucose oxidase yielding hydrogen peroxide; the latter oxidizes o-tolitine through the action of horse radish peroxidase Rapid paper chromatogaprhic microassay of free and ester cholesterol of blood, M. L. Quaife, R. P. Geyer, and H. R. Bolliger, Anal. Chem., 31, 950-54 (1959). The sample is applied to Whatman No. 1 filter paper impregnated with zinc carbonate, and chromatographed with 1.5y0 ethyl ether in cyclohexane. Micromethod for the determination C. Boudene, Ann. biol. clin., 16, 04 pg. Hg is determined by CHCls. Effectiveness of EDTA
of mercury in urine, R. Fabre, R. Truhaut, and 286-98 (1958). In a micromethod for mercury, a titration with di-&naphthylthiocarbazone in with interfering Cu, Au, Pd, and Bi is discussed.
Bactericidal action of salts of certain rare earth metals, A. Muroma, Ann. Med. Exptl. et Biol. Fennial (Helsinki), 36, Suppl. 6-54 pp. (1958). The toxic action of the chlorides of Ce, Se, Y, La, Pr, Nd, Sm, ELI, and Yb on 24 species of bacteria was studied. A micromethod for the determination of serum levels of the tetracyclines and other antibiotics using capillary blood, D. L. Schelhart and H. W. McFadden, Jr.,