Study of the Versatility of a Graphite Furnace Atomic Absorption Spectrometric Method for the Determination of Cadmium in the Environmental Field

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Abstract:

Cadmium is a representative example of trace elements that are insidious and widespread health hazards. In contemporary environmental analysis, there is a clear trend toward its determination over a wide range of concentrations in complex matrixes. This paper describes a versatile method for the determination of Cd at various levels (0.1–500 μg/g) in several sample types, such as soils, sediments, coals, ashes, sewage sludges, animal tissues, and plants, by graphite furnace atomic absorption spectrometry with Zeeman background correction. The effect of the individual presence of about 50 elements, with an interference/analyte concentration ratio of up to 105, was tested; recoveries of Cd ranged from 93 to 106%. The influence of different media, such as HNO3, HCl, HF, H2SO4, HClO4, acetic acid, hydroxylammonium chloride, and ammonium acetate, in several concentrations, was also tested. From these studies it can be concluded that the analytical procedure is scarcely matrix dependent, and the results obtained for a wide diversity of reference materials are in good agreement with the certified values.

Document Type: Research Article

Affiliations: 1: Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Departamento de Impacto Ambiental de la Energía, Laboratorio General de Química Analítica, Avenida Complutense 22, E-28040 Madrid, Spain. 2: Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Departamento de Impacto Ambiental de la Energía, Laboratorio General de Química Analítica, Avenida Complutense 22, E-28040 Madrid, Spain; Universidad Autónoma de Madrid, Facultad de Ciencias, Departamento de Química Analítica y Análisis Instrumental, E-28049 Madrid, Spain.

Publication date: January 1, 2002

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  • The Journal of AOAC INTERNATIONAL publishes refereed papers and reviews in the fields of chemical, biological and toxicological analytical chemistry for the purpose of showcasing the most precise, accurate and sensitive methods for analysis of foods, food additives, supplements and contaminants, cosmetics, drugs, toxins, hazardous substances, pesticides, feeds, fertilizers and the environment available at that point in time. The scope of the Journal includes unpublished original research describing new analytical methods, techniques and applications; improved approaches to sampling, both in the field and the laboratory; better methods of preparing samples for analysis; collaborative studies substantiating the performance of a given method; statistical techniques for evaluating data. The Journal will also publish other articles of general interest to its audience, e.g., technical communications; cautionary notes; comments on techniques, apparatus, and reagents.
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