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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1989-3-23
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pubmed:abstractText |
Concentrations of 28 metals were determined in hair samples from 199 children (age less than or equal to 12 years) and 322 adults (age 13-73) years. Levels of calcium, barium, magnesium zinc, and strontium all show a similar age-dependent increase up to about 12-14 years; levels of aluminum show a decrease with age. Relationships of elemental concentrations with age were examined by using correlation, linear regression, t tests, and discriminant analysis. Statistically significant differences in mean concentration values between children and adults were shown for these metals. Discriminant analysis gave about 95% accuracy in classifying a test data set into the categories of children and adults. A hypothesis suggested by the data is that there is an age-dependent excretion in hair of alkali metals during skeletal growth and development. The observed decrease in aluminum is largely unexplained at this time.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Feb
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pubmed:issn |
0013-9351
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
48
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
17-28
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:2914563-Adolescent,
pubmed-meshheading:2914563-Adult,
pubmed-meshheading:2914563-Age Factors,
pubmed-meshheading:2914563-Aged,
pubmed-meshheading:2914563-Child,
pubmed-meshheading:2914563-Child, Preschool,
pubmed-meshheading:2914563-Female,
pubmed-meshheading:2914563-Hair,
pubmed-meshheading:2914563-Humans,
pubmed-meshheading:2914563-Infant,
pubmed-meshheading:2914563-Male,
pubmed-meshheading:2914563-Metals,
pubmed-meshheading:2914563-Middle Aged
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pubmed:year |
1989
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pubmed:articleTitle |
Age dependence of metals in hair in a selected U.S. population.
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pubmed:affiliation |
Division of Environmental Health Laboratory Sciences, Centers for Disease Control, Atlanta, Georgia 30333.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.
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