|WANG Xiao-li, SHU Ping, YAN Hai-hua.The Improvement of Determining Volatile Phenols in Water by 4-APP Extractive Distillation Method[J].Environmental Monitoring and Forewarning,2010,2(4):21-22
|关键词: 挥发酚 蒸出液 改进
|The Improvement of Determining Volatile Phenols in Water by 4-APP Extractive Distillation Method
WANG Xiao-li, SHU Ping, YAN Hai-hua
Yancheng Environmental Monitoring Central Station，Yancheng，Jiangsu 224002，China
|Introduced the improvement of determining volatile phenols in water by 4-APP extractive distillation method. 250 mL distillate was changed to 100 mL to avoid a long time distillation in the original method and can be applied in the analysis of large quantities of surface water samples. According to the comparison of the results of two methods, it showed that little changes were in absorbance, and their standard curves were similar. The recovery of both methods were in line with regulatory requirements. There was no significant difference by t test between the two methods. The distillation time was reduced from 45 min to 25 min. It improved the efficiency greatly.
|Key words: volatile phenols distillate improvement