论文部分内容阅读
在强酸性溶液中，钛（Ⅵ），钼（Ⅵ）和钨（Ⅵ）均与水杨基荧光酮和阳离子表面活性剂溴化十六烷基三甲基铵发生高灵敏的显色反应，生成稳定的三元胶束络合物。其λｍａｘ分别为５３６．２，５２３.０和５１４．２ｎｍ，表明吸收光谱严重重叠；其表观摩尔吸光系数 和 分别为１２８×１０~５，１.２８×１０~５和１.２７×１０~５，用偏最小二乘法和迭代目标转换因子分析法辅助分光光度法，不经分离，同时测定了模拟样和低合金钢标样中的痕量或少量钛、钼和钨，取得了满意的结果。由于体系的加和性较差，故用模拟纯谱卡尔曼滤波法和ＣＰＡ－Ｐ矩阵法计算均不能取得满意的结果。
In strongly acidic solution, titanium (Ⅵ), molybdenum (Ⅵ) and tungsten (Ⅵ) all reacted with salicylfluorone and cationic surfactant cetyltrimethylammonium bromide in a highly sensitive color reaction, Generate stable ternary micellar complexes. Their λmax were 536.2, 523.0 and 514.2 nm, respectively, indicating a serious overlap of the absorption spectra. The apparent molar absorptivities were 128 × 10 -5, 1.28 × 10 -5 and 1.27 × 10 ~ 5, with partial least squares and iterative target conversion factor analysis assisted spectrophotometry, without separation, simultaneous determination of trace and small amounts of titanium and molybdenum and tungsten in the simulated samples and low alloy steel samples, and achieved satisfactory the result of. Due to the poor additivity of the system, satisfactory results can not be obtained by using simulated pure-spectrum Kalman filter and CPA-P matrix method.