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Author | dc.contributor.author | Toral Ponce, María | |
Author | dc.contributor.author | Richter Duk, Pablo | |
Author | dc.contributor.author | Silva, Lorena | |
Admission date | dc.date.accessioned | 2018-12-20T14:35:55Z | |
Available date | dc.date.available | 2018-12-20T14:35:55Z | |
Publication date | dc.date.issued | 1993 | |
Cita de ítem | dc.identifier.citation | Talanta, Volumen 40, Issue 9, 2018, Pages 1405-1409 | |
Identifier | dc.identifier.issn | 00399140 | |
Identifier | dc.identifier.other | 10.1016/0039-9140(93)80218-G | |
Identifier | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/156623 | |
Abstract | dc.description.abstract | A sensitive derivative spectrophotometric method is described for the determination of microamounts of cobalt based on the integration of liquid-liquid separation and reaction, in dichloroethane, of the analyte with 3-(4-phenyl-2-pyridinyl)-5-phenyl-1,2,4-triazine (PPT) and 2,4,6-trinitro-phenol (picric acid). Cobalt was thus determined in the range 7.2-500 ng/ml. The method has a high selectivity with a detection limit of 2.2 ng/ml. The relative standard deviations were 3.2 and 1.5% for 20 and 100 ng/ml cobalt, respectively. The proposed method was applied to the determination of the analyte in vitamins. © 1993. | |
Lenguage | dc.language.iso | en | |
Type of license | dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | |
Link to License | dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | |
Source | dc.source | Talanta | |
Keywords | dc.subject | Chemistry (all) | |
Título | dc.title | Determination of trace amounts of cobalt by solvent extraction-second derivative spectrophotometry | |
Document type | dc.type | Artículo de revista | |
Cataloguer | uchile.catalogador | SCOPUS | |
Indexation | uchile.index | Artículo de publicación SCOPUS | |
uchile.cosecha | uchile.cosecha | SI | |
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