摘要
用异丙醇作溶剂溶解双硫腙,Tween-20作为增溶剂,在盐酸介质中,双硫腙水相直接光度法测定水中痕量铅。铅与双硫腙配合物的最大吸收波长为480nm,铅离子在0～150μg/L浓度范围内呈线性,相关系数r=0.9962,回收率为99.4%～101.4%。
The reaction of Pb2＋ with dithizone was studied in the presence of Tween-20.In the presence of micellar solutions,lead could form complex with dithizone.The maximum absorption of the complex occurred at 480 nm.The linear range of determination is 0～150 μg/L,r=0.996 2.The recovery rate of the method is 99.4%～101.4%.
出处
《河北化工》
2010年第5期73-74,共2页
Hebei Chemical Industry
