摘要
本文报道一个快速和比较准确的锰黄铜溶样方法,采用HCl-H2O2溶解试样,然后,加入硫、磷混合酸.加热至冒硫酸烟驱赶盐酸。以AgNO3为催化剂,用(NH4)S2O8将锰氧化成七价,用亚砷酸钠一亚硝酸钠标准溶液滴定,获得满意测定结果。
The paper reported a rapid and reasonably accuracy method for dissolving manganese-brass in the determination of manganese. The sample first was dissolved in HCl-H2O2 solutions. Then add H2SO4, H2PO4 mixing acid in it, and evaporate the solutions to smoking of H4SO4 to remove HCl. In obtained solutions, add AgNO3 as catalyst, and (NH4)2S3O7 as oxidant for Mn+2→Mn+7, and titrate the Mn+7 with Na3AsO3 - NaNO2 standard solution. The method for dissolving manganese-brass gives satisfactory results in the determination of manganese.
出处
《福建分析测试》
CAS
2004年第2期1974-1975,共2页
Fujian Analysis & Testing
