title: A contribution to the study of fluoride excretion.
abstract: Three population groups (two of them consisting of school-going children) with a low content of fluoride in the drinking water have been used to investigate parameters influencing fluoride excretion. For the population living in an area contaminated by F-air pollution, there was no significant effect of age or sex from 3 to 17 years. For the population living in a non-contaminated area, there is an increase with age. The data are distributed according to log normal. To determine these excretion levels, first-morning samples were used and it is concluded that for population research (not necessarily for individuals) this is more practical than 24-h samples and yield reliable results. To correct for urine concentration, correlation with Ca2+, Cl- and creatinine were investigated. Low or insignificant correlations were obtained.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002118:Calcium / Q000652:urine; D002648:Child; D002675:Child, Preschool; D002712:Chlorides / Q000652:urine; D003404:Creatinine / Q000652:urine; D005260:Female; D005459:Fluorides / Q000652:urine*; D006801:Humans; D008297:Male; D012737:Sex Factors; D014867:Water
chemical_list: D002712:Chlorides; D014867:Water; D003404:Creatinine; D005459:Fluorides; D002118:Calcium