Preconcentration of submicrogram cobalt with 8-quinolinol from natural waters for electrothermal atomic absorption spectrometry.
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Determination of Beryllium in Various Types of Natural Waters by Electrothermal Atomic Absorption Spectrometry
The procedure for the reliable determination of Be in natural waters by ETAAS was elaborated. Various modifiers (EDTA, Ca(NO3)2, Mg(NO3)2, Pd(NO3)2 and the mixture of Pd(NO3)2 and Mg(NO3)2) for the determination of beryllium was examined. The applicability of the selected Mg(NO3)2 as the appropriate and generally used modifier for the determination of Be in the different types of natural waters...
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Synthetic zeolites were dissolved in nitric acid, and the resulting solution used as a coprecipitant for the preconcentration of trace amounts of gallium in water samples prior to determination by electrothermal atomic absorption spectrometry (ETAAS). The gallium preconcentration conditions and the ETAAS measurement conditions were optimized. Gallium was quantitatively concentrated with the zeo...
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A flow injection on-line sorption preconcentration system for the electrothermal atomic absorption spectrometric determination of platinum has been developed. The method employs on-line preconcentration of platinum on a column packed with silica gel functionalised with 1,5-bis(di-2-pyridyl)methylene thiocarbohydrazide (DPTH-gel) placed in the autosampler arm. The modification of the autosampler...
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Marcio V. Reboucas,* Sergio L. C. Ferreira and Benicio de Barros Neto Braskem S. A., Unidade de Insumos Básicos, Laboratório, Rua Eteno 1561, Complexo Petroquı́mico de Camacari, Camacari-Bahia, Brazil 42810-000. E-mail: [email protected] Universidade Federal da Bahia, Instituto de Quı́mica, Departamento de Quı́mica Analitica, Campus Universitário de Ondina, Salvador-Bahia, Brazil 4017...
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A preconcentration system for multi-element electrothermal atomic absorption spectrometry was developed with a microcolumn packed with a chelating resin. The proposed method was applied successfully to the simultaneous determination of Co, Ni and Cu in seawater. A sample volume of 2 ml was required for the analysis. Retention of metal ions as a complex on the microcolumn was achieved by using M...
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ژورنال
عنوان ژورنال: Analytical Sciences
سال: 1989
ISSN: 0910-6340,1348-2246
DOI: 10.2116/analsci.5.475