Determination of Cu, Ni and Pb in aqueous medium by FAAS after pre-concentration on 2-aminothiazole modified silica gel
نویسندگان
چکیده
منابع مشابه
Determination of Copper, Iron, Nickel and Zinc in fuel kerosene by FAAS after adsorption and pre-concentration on 2-aminothiazole-modified silica gel
1Instituto de Química, Departamento de Química Analítica, UNESP, CP 355, 14800-900 Araraquara,SP, BRAZIL 2Centro de Energia Nuclear na Agricultura-USP, 13416-000, Piracicaba, SP,BRAZIL 3Instituto de Biociências, Departamento de Física e Biofísica, UNESP, CP 510, 18618-000, Botucatu, SP, BRAZIL 4Instituto de Biociências, Departamento de Química e Bioquímica, UNESP, CP 510, 18618-000, Botucatu, S...
متن کاملdetermination of fe, zn and cu in ambient air by combining pre-concentration methods and faas
the main sources of human exposure to trace metals for non-occupationally exposed individualsare inhalation and ingestion. because the absorption rates of the metals by inhalation are significantly higher (up to 50-60%) than those by ingestion (between 3% and 10%), determination of trace metals in ambient air samples is of special interest. the main purpose of this study was to determine fe, zn...
متن کاملdetermination of fe, zn and cu in ambient air by combining pre-concentration methods and faas
the main sources of human exposure to trace metals for non-occupationally exposed individualsare inhalation and ingestion. because the absorption rates of the metals by inhalation are significantly higher (up to 50-60%) than those by ingestion (between 3% and 10%), determination of trace metals in ambient air samples is of special interest. the main purpose of this study was to determine fe, zn...
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This paper discusses a rapid and sensitive method developed to determine trace levels of mercury in natural water samples by cold vapor atomic absorption spectrometry using a preconcentration system composed by mini-column packed with 100 mg of 2-aminothiazol modified silica gel (SiAT) coupled on-line with the spectrometer’s cold vapor generator system. The optimum preconcentration conditions a...
متن کاملDetermination of cadmium in river water samples by flame AAS after on-line preconcentration in mini-column packed with 2-aminothiazole-modified silica gel.
A rapid and sensitive method was developed to determine trace levels of Cd2+ ions in an aqueous medium by flame atomic absorption spectrometry, using on-line preconcentration in a mini-column packed with 100 mg of 2-aminothiazol modified silica gel (SiAT). The Cd2+ ions were sorbed at pH 5.0. The preconcentrated Cd2+ ions were directly eluted from the column to the spectrometer's nebulizer-burn...
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ژورنال
عنوان ژورنال: Journal of the Brazilian Chemical Society
سال: 2004
ISSN: 0103-5053
DOI: 10.1590/s0103-50532004000300005