【摘要】 研究了在非离子型微乳液作用下 ,铬天青S与钍的显色反应 ,建立了一种测定钍的新方法。体系λmax =630nm ,ε=1 2 4× 1 0 5L·moL- 1 ·cm- 1 。钍的含量在 0～ 30 μg/ 2 5mL内符合比尔定律 ,方法用于矿石及合金样品中钍的测定 ,结要满意。更多还原

【Abstract】 The color reaction of CAS with thorium(Ir)was studied.A new method for the determination of thorium was developed.The molar absorptivity was found to be 1 24×10 5 L·moL -1 ·cm -1 at 630nm.Beer’s law was obeyed in the range of 0～30μg/25ml.This method has been adopted to the determination of thorium in ore and alloy with satisfactory results.更多还原