在研究Mo(Ⅵ)、W(Ⅵ)与Tiron显色反应的基础上,用多波长数据线性回归分光光度法处理Mo(Ⅵ)、W(Ⅵ)两组分混合体系,选取了波长范围为310～370nm间的12个波长点进行测定。结果表明,当Mo:W为4:10～10:1时,回归相关系数r≥0.996,回收率为97～103％,回归线相对波动除1:10时约为12％外,其余均≤5.5％,结果具有较好的精密度和准确度。 Based on the color reaction of Mo (Ⅵ), W (Ⅵ) with Tiron, the mixed systems of Mo (Ⅵ) and W (Ⅵ) were analyzed by multiwavelength data linear regression spectrophotometry. The wavelength range of 310 ~ 370nm between the 12 wavelength points were measured. The results showed that when the Mo: W ratio was 4: 10 ~ 10: 1, the regression coefficient r≥0.996, the recovery rate was 97 ~ 103%, and the relative volatility of regression line was about 12% %, The result has better precision and accuracy.