Linked Life Data

11131196

Source:http://linkedlifedata.com/resource/pubmed/id/11131196

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
2000-12-22
pubmed:abstractText
A few studies have examined the variability in 109Cd-based K-shell x-ray fluorescence (KXRF) bone lead measurements from replicate measurements made either at the same time or over a period of time, and one of these studies has shown that the uncertainty in an individual measurement is an underestimate of the standard deviation of replicate measurements. Variability in KXRF tibia lead measurements was assessed from ten cadaver intact legs, from the bare tibiae dissected from nine of these legs, and from four in vivo volunteers. Cadaver legs underwent replicate measurements on multiple occasions. In vivo volunteers underwent single measurements of the left tibia monthly for one year. Average tibia lead levels in the cadaver legs and in vivo volunteers ranged from 6 to 50 and from 6 to 13 microg Pb per g of bone mineral respectively. The factors influencing the standard deviation of replicate measurements were investigated. Both cadaver and in vivo measurements confirmed that the uncertainty in an individual measurement is an underestimate of the standard deviation of replicate measurements, suggesting a methodological deficiency probably shared by most current 109Cd-based K-shell XRF lead measurement systems.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0031-9155
pubmed:author
pubmed:issnType
Print
pubmed:volume
45
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3737-48
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Variability in XRF-measured tibia lead levels.
pubmed:affiliation
The Mount Sinai School of Medicine, Department of Community and Preventive Medicine, New York, NY 10029, USA. andrew.todd@mssm.edu
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.