摘要
利用痕量钯（Ⅱ）在稀硫酸介质中，对溴酸钾氧化２－（５－溴－２－吡啶偶氮）－５－二乙氨基酚（５－Ｂｒ－ＰＡＤＡＰ）反应的催化作用，建立了测定痕量钯（Ⅱ）的新型动力学光度法。方法的检测限为７．７×１０－１２ｋｇＰｄ２＋／Ｌ，测定范围为０～１０ｎｇＰｄ２＋／２５ｍＬ．用于测定矿石中的痕量钯（Ⅱ）。
A new kinetic spectrophotometric method for the determination of trace Pd(Ⅱ) has been developed,the method is based on the catalytic effect of trace Pd(Ⅱ) on oxidation of 2-(5-bromo-2-pyridylazo)-5-dietheylaminophenoe(5-Br-PADAP)with potassium bromate in dilute sulphuric acid solution.The detection limit is 7.7×10 -12 g Pd 2+ /mL and the linear range is 0-10 ng Pd 2+ /25 mL.It has been applied satisfactorily to the determination of trace Pd(Ⅱ)in ores.
出处
《南昌大学学报（理科版）》
CAS
1997年第2期127-130,共4页
Journal of Nanchang University(Natural Science)
关键词
催化光度法
钯
溴酸钾
Br-PADAP
catalytic kinetic spectrophotometry,potassium bromate,2-(5-bromo-2-pyridylazo)-5-diethylaminophenoe(5-Br-PADAP),trace palladium(Ⅱ)
