摘要
在0．24mol·L^1磷酸介质中，铅与二澳对甲基偶氯甲磺形成1:2蓝色络合物，最大吸收波长642urn，表观摩尔吸光系数为7．68×10~4L·cm^1，铅量在0－15/25ml内符合比耳定律，方法应用于铝合金中微量铅的测定，结果满意．
In the mwhurn of o. 24mo. L- l HsPo, tal nats with the reagent to form abhie complex which has a composihon of 1: 2 and exhibits an absorption maximum at 642nmwith a molar absorptivity of 7 .68 x 1O^4. mo~ 1. cm~ 1. Beers law is obeyed for 0 ~ 15μg oflead in 25ml of solution. The method has been used for the determinaion of micro amountsof lead in aluminum alloys with a satisfactory result.
出处
《山西大同大学学报（自然科学版）》
1999年第6期63-65,共3页
Journal of Shanxi Datong University(Natural Science Edition)
关键词
二溴对甲基偶氮甲磺
铅
铝合金
显色反应
Dibromo-p-methyl-methylsulfonazo, Lead, Aluminum alloy，color reaction
