铅是目前我国常见的一种有毒物质。长期以来,在对铅的测定中,始终用二硫腙法和原子吸收法。前者试剂多,提纯繁,接触有毒试剂多;后者适合做大量样品,且仪器贵,不易基层推广。为此,我们采用铅—钼—偶氮胂Ⅲ异金属双核三元络合物法测定车间空气铅,取得较好结果。 Lead is currently a common toxic substance in our country. For a long time, in the determination of lead, always with dithizone method and atomic absorption method. The former reagent and more complex purification, contact with toxic reagents and more; the latter suitable for a large number of samples, and the instrument expensive, not easy to promote grassroots. To this end, we use lead - molybdenum - arsenazo Ⅲ heterometallic binuclear ternary complex method for the determination of lead in the air plant, and achieved good results.