作者用含有放射性同位素 Ca_(45),S~(35),P~(32)的 Cacl_2,H_2So_4,H_3Po_4等溶液使25种衣服质料(包括棉织品,麻,丝,毛织品,帆布及各种合成纤维)受到沾染,并用水及其他洗涤剂进行消除沾染,以探讨不同的衣服质料在沾染程度上以及消除沾染的难易上有何差异。沾染方法有二:(1)将试样浸在含一定量同位素溶液中,经一定时间取出,干燥后测定其放射 The author used 25 kinds of clothing materials (including cotton, hemp, silk, wool, canvas and all kinds of synthetic fibers) with solutions of CaCl2, H2S04 and H3Po4 containing radioactive isotope Ca45, ) Are contaminated and eliminated with water and other detergents to find out how different clothing materials differ in the degree of contamination and the ease of contamination. There are two methods of contamination: (1) The sample is immersed in a solution containing a certain amount of isotope, after a certain period of time removed, measured after drying its radiation