减量蒸馏法测定废水中挥发酚的探索

Research of reduction distillation method to determine volatile phenols in waste water

在4-氨基安替比林直接分光光度法测定挥发酚的基础上,采用50mL水样进行预蒸馏,然后按标准分析方法进行后续操作,实验测定标准样品的结果在保证范围内,加标回收率在90%-105%之间,平行测定相对标准偏差为1.8%,与标准方法无显著性差异。减量蒸馏法节省了时间,减少了与水电的消耗,提高了监测分析效率。

For the analysis efficiency,distilled 50mL samples to experiment base on the method of determination volatile phenolic compounds by 4-AAP spectrophotometry.The experiments showed that the standard substances analysis achieved qualified results,the recovery of standard addition distribute in the 90%-105%range,parallel determination of the relative standard deviation is 1.8%,and no significant differences with the standard method,.Moreover,the method can save a lot of time,water and electric energy.