A detailed study of precipitation reaction of perchlorate ion with tetraphenylarsonium chloride is reported. Optimum conditions for quantitative precipitation of perchlorate ion were determined. A gravimetric and a spectrophotometric method for perchlorate ion are proposed. The spectrophotometric method is based upon dissolution of ( C.H.),AsClO. in acetonitrile and subsequent measurement of ab...

Lily, R. E. C., Cole, P. V., and Hawkins, L. H. (1972). Brit. J. industr. Med., 29, 454-457. Spectrophotometric measurement of carboxyhaemoglobin. An evaluation of the method of Commins and Lawther. The spectrophotometric method of Conmmins and Lawther for the measurement ofcarboxyhaemoglobin (COHb) concentration was evaluated for both accuracy and sensitivity. The method was calibrated by equi...

Lily, R. E. C., Cole, P. V., and Hawkins, L. H. (1972). Brit. J. industr. Med., 29, 454-457. Spectrophotometric measurement of carboxyhaemoglobin. An evaluation of the method of Commins and Lawther. The spectrophotometric method of Conmmins and Lawther for the measurement ofcarboxyhaemoglobin (COHb) concentration was evaluated for both accuracy and sensitivity. The method was calibrated by equi...

background: although lowering of food cholesterol is an effective way to reduce blood cholesterol, but recently some effective health and bioactivity characteristics of the milk fat components have been identified, so by decreasing the use of milk fat, an important source of fat-soluble vitamins and bioactive components of milk is limited. recent studies have shown that the growth of lactic aci...

The methods available for the quantitative assay of these enzymes are based on phosphate transfer determinations and pH change of the reaction mixture. They require large quantities of adenosine triphosphate and, for estimation in crude tissue extracts, the addition of inhibitors such as iodoacetate and sodium fluoride (7). The purpose of this paper is to report a simple and rapid spectrophotom...