Furushima K, Shinagawa M
Radioisotopes. 1980 Sep;29(9):417-21.
In order to detect to radioactive band on the paper strip developed by focusing chromatography, plate-making-film was used for the autoradiography and beta-spots were photographed. Thereafter the film was etched with sodium hydroxide solution to find the alpha-tracks. Paper strip used for the sample was prepared by the precipitation focusing chromatography of 226Ra and its daughter nuclides using HCl-KF solution as a developer. The film used was not high in its beta-sensitivity, but because of its high resolution good photographic results were obtained according to the intensity of beta-activity when the proper conditions of photographic development were fulfilled. The simple alpha-spectrometry was made possible by counting the numbers of tracks according to the etching depth of the film. The film was hard and thick enough for etching with 6M sodium hydroxide solution at 50 degrees C for more than 50 hrs to measure the depth of tracks.
为了检测聚焦色谱法展开的纸条上的放射性带，使用制版胶片进行放射自显影并拍摄β斑点。此后，用氢氧化钠溶液蚀刻胶片以找到α径迹。用于样品的纸条是通过以HCl-KF溶液为展开剂对226Ra及其子核素进行沉淀聚焦色谱法制备的。所用胶片的β灵敏度不高，但由于其分辨率高，在满足适当的显影条件时，根据β活性强度可获得良好的摄影效果。通过根据胶片的蚀刻深度计算径迹数量，实现了简单的α光谱测定。该胶片坚硬且足够厚，可在50℃下用6M氢氧化钠溶液蚀刻50多个小时以测量径迹深度。
