摘要
试样在聚四氟乙烯压力罐内加ＨＣｌ－Ｈ＿２Ｏ＿２于１５０℃溶解，２－巯基苯并噻唑－溴化亚锡－乙酸乙酯萃取吸光光度法测定Ｒｈ。选择了分析测定条件和干扰离子的影响及消除。方法精密度和准确度好，有较高灵敏度，对含Ｒｈ５ｐｐｍ以上物料的分析结果良好。
A method of spectrophotometry was proposed for the determina-tion of trace rhodium in waste catalysts containing platinum,palladium,and rhodium.The specimen was dissolved with HCl and H_2O_2 at 150℃ in a PTFE jar.The complexes of rhodium with tin(Ⅱ) bromide and 2-me-rcaptobenzothioazole(MBT)in 1.2 mol/L HCl was boiled and then cooled to room temperature and extracted by EtAc and finally measured at 476 nm.The method is applied to determine trace rhodium in waste catalysts with satisfactory results.
出处
《贵金属》
CAS
CSCD
北大核心
1995年第1期43-46,共4页
Precious Metals
