| Journal: | Quimica nova |
| Database: | PERIÓDICA |
| System number: | 000199247 |
| ISSN: | 0100-4042 |
| Authors: | Bendassolli, Jose Albertino1 Mortatti, Jefferson Trivelin, Paulo Cesar Ocheuze Ignoto, Raquel de Fatima Bonassi, Jose Aurelio Tavares, Glauco Arnold |
| Institutions: | 1Universidade de Sao Paulo, Centro de Energia Nuclear na Agricultura, Piracicaba, Sao Paulo. Brasil |
| Year: | 2002 |
| Season: | Mar-Abr |
| Volumen: | 25 |
| Number: | 2 |
| Pages: | 312-315 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Experimental, divulgación |
| English abstract | Isotopic and elemental analysis of N, C and S in liquid and solid samples has been simplified with the advent of automated systems. The simplest method of automation for this kind of analysis involves an elemental analyzer interfaced directly to the ion source of an IRMS (Isotope Ratio Mass Spectrometry). In the analyzer reduction system, an expressive amount of oxidized copper is generated as solid residue. This material is normally imported and the price is very high. A methodology was proposed for the recovery of metallic copper in order to recycle this reagent in the reduction system of a GC-IRMS, using the hydrogen gas in the vacuum line. Results show that it is possible to obtain a recycle of about 95 % of the initial metallic copper used in the reduction system |
| Disciplines: | Química, Ingeniería |
| Keyword: | Química analítica, Equipo y maquinaria, Reciclaje, Cobre, Residuos, Analizador carbono-nitrógeno |
| Keyword: | Chemistry, Engineering, Analytical chemistry, Equipment and machinery, Recycling, Copper, Residues, Analyzer of carbon and carbon |
| Full text: | Texto completo (Ver HTML) |
