Repeated measurements of tibia lead concentrations by in vivo x ray fluorescence in occupational exposure.
AUTOR(ES)
Armstrong, R
RESUMO
A group of workers occupationally exposed to lead have had measurements of their tibia lead concentrations made on two occasions separated by five years; on the second occasion calcaneus lead concentrations were also measured. The results serve to confirm the reliability of the measurement technique and to illustrate the improved precision achieved through technical improvements. More importantly, the relation between tibia lead concentration and cumulative blood lead found in this longitudinal study was entirely consistent with that previously reported, which had been based on cross sectional studies. Furthermore, the relation between lead concentrations in the tibia and in calcaneus found here was similar to that previously found in a larger cross sectional survey. It is concluded that this technique of measuring bone lead concentrations non-invasively is likely to be used increasingly as a biological monitor of cumulative exposure to lead.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1039227Documentos Relacionados
- In vivo measurements of lead in bone at four anatomical sites: long term occupational and consequent endogenous exposure.
- In vivo tibia lead measurements as an index of cumulative exposure in occupationally exposed subjects.
- Relationship between the lead concentration in hair and occupational exposure.
- Occupational lead neurotoxicity: improvement in behavioural effects after reduction of exposure.
- Lead exposure.