title: [Reference value of urinary arsenic for nonoccupational exposed subjects in Henan].
abstract: Urinary arsenic levels of 2065 nonoccupational exposed subjects in Henan were determined by spectrophotometric analysis. The results showed: (1) The difference was not significant among Zhengzhou, Luoyang, Anyang, Xinyang and Shangqiu (0.01 < P < 0.025). (2) The difference was not significant among different ages(0.01 < P < 0.025) and between sexes(P > 0.05). (3) The distribution was positive skewness. The median of urinary arsenic was 17.8 micrograms/L. The arithmetic mean was 20.7 micrograms/L. The standard deviation was 15.2 micrograms/L. The geometric mean was 17.3 micrograms/L. (4) It is suggested that the reference upper limit value of urinary arsenic for nonoccupational exposed subjects in Henan in 56 micrograms/L.
authors.affiliation: Occupational Disease Institute of Henan Province, Zhengzhou 450052, China.
authors.forename: W
authors.initials: W
authors.lastname: Qin
authors.forename: G
authors.initials: G
authors.lastname: Wang
authors.forename: X
authors.initials: X
authors.lastname: Luo
authors.forename: H
authors.initials: H
authors.lastname: Liu
mesh_terms: D000293:Adolescent; D000328:Adult; D001151:Arsenic / Q000652:urine*; D002648:Child; D002675:Child, Preschool; D004781:Environmental Exposure; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D012737:Sex Factors; D013053:Spectrophotometry
chemical_list: D001151:Arsenic