Document Detail


Determination of calcium intake of help of atomic absorption spectrophotometry.
MedLine Citation:
PMID:  7269659     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In a dietary survey, large numbers of a wide variety of food samples have to be analyzed. The atomic absorption spectroscopy (AAS), with its simplicity, accuracy and rapidity, suggests itself for determination of many elements in such a case. In this investigation, calcium determination by AAS is reviewed. Analytical parameters, interferences and their control are studied. Food samples are dry ashed and treated so as to eliminate silicates. Most serious interference comes from phosphates and is successfully controlled by addition of lanthanum. Calcium is determined in the range 2-10 ppm with a sensitivity of 0.1 ppm. Single food samples and samples representing food mixtures are analyzed, and calcium intake of different population groups is computed. In most cases, results compare favourably well with those obtained from food composition tables. Calcium intake in the Netherlands both of the average per caput and of chosen population groups is found to cover the recommendations except for infants. Differences do exist between intakes of different groups and in different seasons.
Authors:
M I El-Shaarawy; J F Reith
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Zeitschrift für Ernährungswissenschaft     Volume:  20     ISSN:  0044-264X     ISO Abbreviation:  Z Ernahrungswiss     Publication Date:  1981 Jun 
Date Detail:
Created Date:  1981-10-14     Completed Date:  1981-10-14     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0413632     Medline TA:  Z Ernahrungswiss     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  119-31     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Age Factors
Calcium, Dietary / administration & dosage,  analysis*
Child, Preschool
Diet Surveys
Female
Food Analysis*
Humans
Infant
Lanthanum
Male
Netherlands
Phosphates
Pregnancy
Sex Factors
Spectrophotometry, Atomic
Strontium
Chemical
Reg. No./Substance:
0/Calcium, Dietary; 0/Phosphates; 7439-91-0/Lanthanum; 7440-24-6/Strontium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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