Spectrophotometric determination of periodate and glycerol with 5,5-dimethyl-1,3-cyclohexanedione bisthiosemicarbazone monohydrochloride |
| |
Authors: | M.Callejon Mochon J.A.Mun̄oz Leyva |
| |
Affiliation: | Department of Analytical Chemistry, Faculty of Chemistry, University of Seville Spain |
| |
Abstract: | A direct spectrophotometric method for the determination of periodate (1—10 ppm) is based on the formation of a yellow oxidation product of 5,5-dimethyl-1,3-cyclohexanedione bisthiosemicarbazone monohydrochloride in aqueous solution at pH 0.5—1.2. The molar absorptivity at 415 nm is 1.72 × 104 l mol-1 cm-1. The relative standard deviation is 0.8% for 8.0 ppm periodate. A modification to this procedure is used for the indirect spectrophotometric determination of glycerol (2–10 ppm), via the Malaprade reaction. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|