THE ABUNDANCE OF SOME ELEMENTS IN HAIR AND NAIL FROM THE MACHAKOS-DISTRICT OF KENYA

被引:20
作者
OTHMAN, I
SPYROU, NM
机构
[1] Med. Environm. Phys. Group, Dept. Phys., Univ. Surrey, Guildford, United Kingdom
关键词
ENVIRONMENTAL PROTECTION - Sampling - Statistical methods;
D O I
10.1016/0048-9697(80)90111-4
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Hair and nail samples collected from a population group in the Machakos District, Kenya, were studied for their elemental content using instrumental neutron activation analysis. In order to test for the type of probability distribution, frequency histograms of elemental concentration of 9 elements in hair, both for male and female subjects in the population, were plotted and X**2-tests applied for normal distributions. Plots of cumulative frequency, using logarithmic probability paper, were used to illustrate the lognormal nature of the distributions of elements in hair such as Hg. Results from nail samples available for a small number of subjects are also presented for males and females. Differences in concentrations for the various groups were investigated and discussed. Comparison was made with published data for a number of different populations.
引用
收藏
页码:267 / 278
页数:12
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