摘要
一种测定钯的高灵敏光度试剂N-戊基-N'-(对氨基苯磺酸钠)硫脲(APT)被研究。在十六烷基三甲基溴化铵(CTMAB)存在下和在乙酸-乙酸钠缓冲溶液中,APT与钯反应生成一种稳定黄色络合物,该络合物的最大吸收波长位于294.4 nm,其表观摩尔吸光系数为3.52×105L.mol-1.cm-1。该试剂用于矿石、催化剂样品中钯的测定,获满意结果。该试剂水溶性好,并且对环境友好。
A highly sensitive spectrophotometric reagent for the determination of palladium (Ⅱ), N-amyl-N'-(sodium p-aminobenzenesulfonate) thiourea (APT) was studied. In the presence of cetyl trimethylammonium bromide (CTMAB), APT reacts with palladium (Ⅱ) to form a stable yellow complex in HAc-NaAc buffer solution. The palladium-APT complex exhibits a maximum absorption at 294.4 nm, with apparent molar absorptivity of 3.52×10^5 L mol^-1 cm^-1. This reagent has been successfully used for spectrophotometric determination of palladium in samples of mineral and catalyst. Besides, the reagent is soluble in water and friendly to environment.
出处
《冶金分析》
CAS
CSCD
北大核心
2007年第8期14-18,共5页
Metallurgical Analysis
基金
Nation Key Basic Research Project‘973’(2005CB724306)