摘要
以偶氮胂Ⅲ为显色剂,在强酸介质中锆离子与偶氮胂Ⅲ形成稳定的紫色络合物,利用该方法测定茂金属催化剂中的锆含量,并考察其测定条件。结果表明,最大吸收波长为663.5nm,表观摩尔吸光系数为1.66×10~5L/(mol·cm)^(-1),少量的阳离子不干扰锆含量的测定,加标回收率为98.7%～102.1%,方法准确简便。
The zirconium content in metallocene catalyst was determined with complex analysis method, in which arsenazo Ⅲas ingrain agent, ions of the Zr（Ⅳ ） formed a stable purple complex with the arsenazo Ⅲin strong acidic medium, and the determination conditions investigated. The results showed that the maximum absorption wavelength was 663.5 nm, the apparent molar absorption coefficient of 1.66×10^5 L/（mol·cm）-1, a trace of other cations not interfered to determination of the zirconium, the recovery of 98.7%-102.1%. The method is accurate, simple and convenient.
出处
《石化技术》
CAS
2011年第2期49-51,共3页
Petrochemical Industry Technology
关键词
锆
偶氮胂Ⅲ
分光光度法
茂金属催化剂
zirconium
arsenazo Ⅲ
spectrophotometry
metallocene catalyst
