van Wyk C W, Grobler S R
S Afr Med J. 1983 Apr 9;63(15):559-62.
The lead levels in shed deciduous teeth of children from two selected urban regions in the Cape Peninsula were compared. The average levels in the teeth of children living in the vicinity of two large industrial plants were: whole teeth 20,419 ppm, enamel 10,952 ppm, and dentine 22,733 ppm. The lead levels in teeth from children living in the vicinity of light industries were: whole teeth 16,556 ppm, enamel 2,919 ppm, and dentine 19,926 ppm. These differences were significant at the 1% level (teeth and enamel) and 5% level (dentine).
对开普敦半岛两个选定城市地区儿童脱落乳牙中的铅含量进行了比较。生活在两家大型工厂附近的儿童牙齿中的平均铅含量为:全牙20419 ppm,牙釉质10952 ppm,牙本质22733 ppm。生活在轻工业附近的儿童牙齿中的铅含量为:全牙16556 ppm,牙釉质2919 ppm,牙本质19926 ppm。这些差异在1%水平(牙齿和牙釉质)和5%水平(牙本质)上具有显著性。