The voltammetric response of Zn in NaOH solutions containing different Na,S concentrations showed that for potentials located between the beginning of Zn anodic oxidation and Zn passivation, ZnS formation can be observed as a result of an initial competitive adsorption between OH-and sulphide ions f
Degradation of humic acid in a sodium sulphide solution
โ Scribed by M.H.B. Hayes; M. Stacey; R.S. Swift
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- English
- Weight
- 317 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
โฆ Synopsis
Sixty per cent of the products from the degradation of humic acid (extracted from a Fenland organic soil) with a 10% sodium sulphide solution under au;toclave conditions for 2 h at 250ยฐC were soluble in ether or ether-ethanol solutions. Several neutral volatile degradation products were observed by gas-liquid chromatography, and ethyl esters of dibasic acids and possibly similar esters of phenyl propionic acid derivatives were isolated from the ether-soluble acidic degradation products.
This technique is promising and worthy of further application.
๐ SIMILAR VOLUMES
The electrocheuucal oxldatlon-reduction processes of copper, cadmmm and lead m the presence of hums. actd (HA) m sodmm chlonde solutions were compared, ta!ung mto account the differences m the speaatlon of these. heavy metal tons and the type of the HA used The complexatlon propeties of HA for the m