| Determination of copper, cobalt, nickel, and manganese in baby food slurries using electrothermal atomic absorption spectrometry. | |
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MedLine Citation:
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PMID: 11141250 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The analytical conditions for the electrothermal atomic absorption spectrometric determination of copper, manganese, nickel, and cobalt in different types of baby foods using slurried samples are presented. Suspensions were prepared in a medium containing 0.1% w/v Triton X-100, 30% v/v concentrated hydrogen peroxide, 1% v/v concentrated nitric acid, 1% w/v ammonium dihydrogenphosphate (only for copper atomization), and one drop of silicon antifoam. The slurries were homogenized by using a potter and were introduced directly into the furnace. The amount of analyte extracted to the liquid phase was investigated. The graphite furnace conditions were optimized for each element. No matrix effect was observed, and calibration could be carried out using aqueous standard solutions. The detection limits were 3.4, 2.1, 5.4, and 3.7 pg for copper, manganese, nickel, and cobalt, respectively. The reliability of the procedures was checked by statistically comparing the results obtained with those found by using a previous microwave-oven mineralization stage and by analyzing several certified reference materials. |
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Authors:
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P Viñas; M Pardo-Martínez; M Hernández-Córdoba |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 48 ISSN: 0021-8561 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2000 Dec |
Date Detail:
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Created Date: 2001-05-11 Completed Date: 2001-10-25 Revised Date: 2009-11-03 |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
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Languages: eng Pagination: 5789-94 Citation Subset: IM |
Affiliation:
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Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, E-30071 Murcia, Spain. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Cobalt
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analysis Copper / analysis Food Analysis* Humans Infant Infant Food / analysis* Manganese / analysis Metals, Heavy / analysis* Nickel / analysis Spectrophotometry, Atomic / methods* |
| Chemical | |
Reg. No./Substance:
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0/Metals, Heavy; 7439-96-5/Manganese; 7440-02-0/Nickel; 7440-48-4/Cobalt; 7440-50-8/Copper |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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