【摘要】 在硫酸与苯二甲酸介质 ( p H2 .0 )中 ,钛与二溴羟基苯基荧光酮及十六烷基三甲基溴化铵生成 1∶ 2∶ 3( W∶ W∶ W)的灰绿色配合物 ,其最大吸收波长在 62 0 nm处。摩尔吸光系数为 1 .74× 1 0 5 L/ ( mol· cm ) ,钛含量为 0～ 0 .1 6μg/m L,符合比耳定律。此法快速 ,对比度大 ,适用于铬镍钢及铝合金中微量钛的测定。更多还原

【Abstract】 In the presence of sulfuric acid and potassium biphthalate, Ti(Ⅳ) reacts with dibromohydroxy phenylfluorone (DBHPF) and CTMAB to form a 1∶2∶3 ( W∶W∶W ) complex with a maximum absorption at 620 nm, its molar absorptivity being 1.74×10 5 L/(mol·cm). Beer′s law is obeyed for 0~0.16 μg/L Ti(Ⅳ). Being rapid and forming a sharp contrast, the method applies to the determination of titanium in aluminium alloys and chrome nickel steel.更多还原