Reciclagem de cobre proveniente de analisador automático de carbono e nitrogênio
| Autor: | Bendassolli José Albertino, Mortatti Jefferson, Trivelin Paulo Cesar Ocheuze, Ignoto Raquel de Fátima, Bonassi José Aurélio, Tavares Glauco Arnold |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | Química Nova, Vol 25, Iss 2, Pp 312-315 (2002) |
| Druh dokumentu: | article |
| ISSN: | 0100-4042 1678-7064 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
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