出版社：National Institute of Occupational Safety and Health
摘要：Lead dusts in air are captured on filter paper, and the concentration of lead in air can be determined by coloring lead on the paper. One of such methods was investigated by Quino1). His method has been used widely, because it is very simple and convenient. But if captured dust contains much of soot or other contamination in it, the determination of lead becomes difficult by this method. In such cases, the author recommends the following procedure which modifies this method a little. At first, lead captured on filter paper is dissolved in the buffer solution. Then the solution is developed along the glass plate using the method of thin layer chromatography, and the lead in the solution is absorped on the plate. Lead is colored on the plate and is determinrd by comparing the deepness of color.
