Imahori A, Fukushima I
Radioisotopes. 1980 Jun;29(6):266-71.
As a part of IAEA research project, "Activation analysis of hair as an indicator of contamination of man by environmental trace element pollutants", a survey was carried out to elucidate the levels of various trace element concentrations in hair of local population in the Tokyo Metropolitan areas, by applying instrumental neutron activation analysis. A total of 202 scalp hair samples were collected from the inhabitants classified by sex and five age classes. Irradiation was made in the Rikkyo University 100 kW TRIGA MARK-II reactor. Using several combinations of irradiation time, cooling time and counting time, forty elements were determined. The relationship between several trace element contents in hair and such factors as sex, age class, hair treatment, smoking habit and dental treatment, was analyzed by using the method of multiple regression. It was shown that (1) Hair treatment had a predominant effect on the contents of bromine, magnesium and calcium in hair, (2) Aging and smoking contributed increasing mercury content in hair, and hair treatment acted reversely.
作为国际原子能机构研究项目“头发的活化分析作为环境微量元素污染物对人体污染的指标”的一部分，通过应用仪器中子活化分析，开展了一项调查，以阐明东京都市区当地居民头发中各种微量元素的浓度水平。从按性别和五个年龄组分类的居民中总共采集了202份头皮头发样本。在立教大学100千瓦TRIGA MARK-II反应堆中进行辐照。使用辐照时间、冷却时间和计数时间的几种组合，测定了40种元素。采用多元回归方法分析了头发中几种微量元素含量与性别、年龄组、头发处理、吸烟习惯和牙齿治疗等因素之间的关系。结果表明：（1）头发处理对头发中溴、镁和钙的含量有显著影响；（2）衰老和吸烟会使头发中的汞含量增加，而头发处理则起到相反的作用。
