Voltammetric determination of antioxidants at the wax-impregnated graphite electrode

✍ Scribed by E. Barendrecht

• Publisher: Elsevier Science
• Year: 1961
• Tongue: English
• Weight: 158 KB
• Volume: 24
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(61)80105-0

✦ Synopsis

In a recent communication2, LANGMYHR AND HONGSLO suggested that the PH range could profitably be narrowed from 3.5-6.5 to 4.5-5.0 ; this latter PH range is said to give better results for separation while the former may cause precipitation of hydrous oxide and needs a longer coagulation period. We have now checked that the PH range, as suggested by MAJUMDAR AND MUKHERJEE, gives quite good results within the specified coagulation period; moreover, there is no possibility of the precipitation of hydrous oside, even when the niobium or the tantalum solution is made ammoniacal. The results shown in Table I confirm these observations. Deparhent of Inorganic and Analytical Chenzistry A. I<. MAJUMDAK Jndtcv/wr University, Calcuttn (Zndia) BIJOLI I<. PAL 1 &. I<, R4AJlJSll>AR AND r. I<. ~~Ul<llRRJI~lC, .4uuL, Chim. Actn, 10 (1g58) 23; 21 (rg5g) 245. 2 1:. J, LANGMYIII~ AND 'T. HONOSLO, Arrnl. Chiru. AcIu, 22 (ICJOO) 301. Reccivcd November z&h, xgGo nrtnl. ct1im. Aclu, 24 (rgG1)