| Analysis of lead in 55 brands of dietary calcium supplements by graphite furnace atomic absorption spectrometry after microwave digestion. | |
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MedLine Citation:
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PMID: 12623663 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The lead (Pb) contents of calcium (Ca) supplements available in Korea were determined by graphite furnace atomic absorption spectrometry using Zeeman background correction and peak area mode. All samples were microwave-digested in concentrated HNO(3). Ammonium dihydrogen phosphate and magnesium nitrate were used as matrix modifiers. Fifty-five brands of Ca supplements were classified into seven categories based on the major composite: bone, milk, oyster/clam shell, egg shell, algae, shark cartilage and chelated. The mean Pb contents of Ca supplements were 1.1 microg g(-1) (coefficient of variation 5.7%), ranging from n.d. (not detected) to 6.7 microg g(-1). Ca supplements made of bone have the highest Pb contents (2.3 microg g(-1)) with a wide range (0.1-6.7 microg g(-1)). The results were similar to those reported in other countries. The mean daily intakes of Pb from the supplement could be about 5 microg (mean Pb concentration 1.1 microg g(-1) x mean daily intake 4.5 g) taking 2% of provisional tolerable daily intake that the FAO/WHO Joint Food Additive and Contaminants Committee has set to evaluate its safety. However, measures to prevent potentials of Pb toxicity from overtaking some Ca supplements should be considered. |
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Authors:
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Meehye Kim; Changmin Kim; Insang Song |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Food additives and contaminants Volume: 20 ISSN: 0265-203X ISO Abbreviation: Food Addit Contam Publication Date: 2003 Feb |
Date Detail:
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Created Date: 2003-03-07 Completed Date: 2003-04-24 Revised Date: 2005-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8500474 Medline TA: Food Addit Contam Country: England |
Other Details:
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Languages: eng Pagination: 149-53 Citation Subset: IM |
Affiliation:
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Department of Food Evaluation, Korea Food and Drug Administration, 5 Nokbun-dong Seoul, 122-704, Korea. meehkim@kfda.go.kr |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Aged Algae Animals Bone and Bones Calcium, Dietary / administration & dosage* Child Child, Preschool Dietary Supplements / analysis* Egg Shell Humans Korea Lead / administration & dosage, analysis* Microwaves Milk Ostreidae Sharks Spectrophotometry, Atomic / methods |
| Chemical | |
Reg. No./Substance:
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0/Calcium, Dietary; 7439-92-1/Lead |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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