系数倍率法测定复方间苯二酚涂剂中二组份的含量

Determination of two constituents in compound resorcinol Paint by coefficient multiplying ratio spectrophotometry

目的 不经分离直接测定复方间苯二酚涂剂中间苯二酚 (R)和苯酚 (P)的含量。方法 采用系数倍率法 ,选择测定的波长为 2 74nm和 2 70nm。结果 二组份相关系数分别为r =0 .9999、r =0 .9990 ,平均回收率为 10 0 .1%和 99.7% ,RSD为 0 .7%和 0 .6%。结论 该方法可靠、简便。

OBJECTIVE To determin resorcinol and phenol in compound resorcinol Paint without isolation. METHOD It were assayed by coefficient multiplying ratio spectrophotometry,The detective wavelength were 274mn and 270nm.RESULTS The correlation coefficients of two constituents were 0.999 9 and 0.999 0.The average recovery were 100.1%(RSD=0.7%)and 99.7%(RSD=0.6%).CONCLUSION This method was reliable,simple and accurate.