钼(Ⅴ)-硫氰酸盐-碱性三苯甲烷染料体系的二级散射光谱及其分析应用

Second order scattering spectra of Molybdenum(Ⅴ) Thiocyanate Basic Triphenylmethane dye systems and their analytical application

研究了钼（Ⅴ）硫氰酸盐配阴离子与结晶紫、乙基紫、孔雀石绿、亮绿及碘绿等碱性三苯甲烷染料的离子缔合配合物的二级散射和反二级散射光谱．考察了影响因素、适宜条件和分析化学特征．提出了用二级散射光谱法测定钼的新的高灵敏分析方法，可用于钢铁中痕量钼的测定．

his work studied on the spectra of second order scattering(SOS) and opposite second order scattering(OSOS) of the ion association complexes of [MoO(SCN) 5] 2- with the basic triphenylmethane dye such as crystal violet(CV), ethyl violet(EV), malachite green(MG), brilliant green(BG) and iodine green(IG). The spectral characteristics, the effect factors and the optimum reaction conditions were investigated. The quantitative relationships of the intensitites of OSOS with the concentration of molybdenum were established. The new and highly sensitive ways for the determination of molybdenrm by OSOS are proposed. The method can be applied to determination of trace amounts of molybdenum in steel, with satisfactory results. 