Published 1989
| Version v1
Miscellaneous
Determination of traces of cobalt in rocks using continuous in-line precipitation and atomic-absorption detection
Creators
- 1. Universidade Federal Fluminense, Niteroi, RJ (Brazil). Dept. de Geoquimica
Description
A continuous preconcentration flame atomisation atomic absorption method for determining cobalt by precipitation with 1-nitroso-2-naphtol is described. The sample treatments, dissolution of cobalt-nitrosonaphtholate, optimization of analytical variables and measurable concentration levels where investigated. The sensivity, selectivity, rapidity and precision of the conventional batch method are significantly enhanced. The proposed method has been successfully applied to the determination of cobalt at the μ g-1 level in silicate rocks. (author)
Abstract (Portuguese)
Um metodo para determinacao de cobalto por precipitacao continua com 1-nitroso-2-naftol e deteccao por espectroscopia de absorcao atomica e descrito. Procedimentos de tratamento das amostras de rochas, dissolucao do nitrossonaftolato de cobalto, otimizacao das variaveis analiticas e medida de baixas concentracoes de cobalto foram investigados. Em relacao aos procedimentos manuais, a metodologia automatica desenvolvida possui sensibilidade, seletividade, precisao alem de rapidez. O metodo proposto foi aplicado com sucesso na analise de padroes internacionais de rochas. (autor)Additional details
Additional titles
- Original title (Portuguese)
- Determinacao de tracos de cobalto em rochas usando precipitacao continua em linha e deteccao por absorcao atomica
Publishing Information
- Imprint Title
- Proceedings of 2. Brazilian Geochemical Congress
- Imprint Pagination
- 531 p.
- Journal Page Range
- p. 437-441.
- Report number
- INIS-BR--2171
Conference
- Title
- 13. International Geochemical Exploration Symposium. 2. Brazilian Geochemical Congress.
- Dates
- 1-6 Oct 1989.
- Place
- Rio de Janeiro, RJ (Brazil).
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 21074660
- Subject category
- S58: GEOSCIENCES;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ABSORPTION SPECTROSCOPY; COBALT; ROCKS; TRACE AMOUNTS
- Descriptors DEC
- ELEMENTS; METALS; SPECTROSCOPY; TRANSITION ELEMENTS
Optional Information
- Notes
- Imprint:Anais do 2. Congresso Brasileiro de Geoquimica.