摘要
研究发现在磷酸介质中,痕量铱(Ⅳ)对高碘酸钾氧化二安替比林对氯苯基甲烷(DApCM)的显色反应具有明显的催化作用。找到了反应的最佳条件,并测定了一些动力学参数,据此建立了测定痕量铱(Ⅳ)的新方法。其检出限为2.11×10^(-9) g/mL;Ir(Ⅳ)的线性范围为0～20μg/L,用于矿样中痕量铱的测定,结果满意。
A kinetic spectrophotometric method for the determination of trace indium ( IV ) was established. It was based on the catalytic effect of Ir( IV ) on the oxidative colour reaction of diantipyryl-(p-chloro)-phenylmethane(DApCM) with potassium periodate in phosphoric acid medium. The optimum reaction conditions and some kinetic parameters were studied. The determination range of indium is 0 ?20 μg/L, and the detection limit is 2. 11 ×10 ^(-9)g/mL. This method has been applied to the determination of Ir( IV) in ores with satisfactory results.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1999年第5期532-535,共4页
Chinese Journal of Analytical Chemistry
关键词
铱
高碘酸钾
DApCM
测定
催化分光光度法
Indium
potassium periodate
diantipyiyl-( p-chloro )-phenylmethane
catalytic spectrophotometry
