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借助多波长数据线生回归分析法处理了结构和性质颇为相似、紫外吸收峰相差只有１３ｎｍ的苯二酚的两种同分异构体。选取波长区间为２６４～２８０ｎｍ范围内的９个波长点进行测定。结果表明，以Ａｔｉ／εｉ对εｉ／εｐ进行回归，在邻苯二酚与对苯二酚浓度比为１：１０～１０：１的范围内时，回归相关系数ｒ≥０．９９６３，回归线相对波动≤５．７％。邻苯二酚和对苯二酚的回收率分别为９９．０％～１０４．０％和９６．０％～１０１．０％，对于邻苯二酚、对苯二酚的标准混合液和模拟混合液的分析，结果较为满意。
By means of multi-wavelength data line regression analysis, two isomers of hydroquinone whose structure and properties are quite similar and whose UV absorption peaks differ by only 13 nm were processed. Select the wavelength range of 264 ~ 280nm range of 9 wavelength points were measured. The results showed that regression of εi / εp with Ati / εi showed that the correlation coefficient r ≥ 0.9963 when the concentration ratio of catechol to hydroquinone was 1:10 to 10: 1, Fluctuation ≤5.7%. The recovery rates of catechol and hydroquinone were 99.0% ~ 104.0% and 96.0% ~ 101.0%, respectively. For the standard mixture of catechol and hydroquinone and the simulation Mixed liquid analysis, the results are more satisfactory.