4-氨基安替比林直接分光光度法测定废水中挥发酚方法改进

Improvement of Determining Volatile Phenol in Wastewater by Using 4-Aminoantioyrine Direct Colorimetric Method

对4-氨基安提比林直接分光光度法测定废水中挥发酚方法提出改进,用过硫酸钾取代铁氰化钾作为氧化剂使反应进行完全,显色反应的稳定性、重现性和准确性均较好。方法的最低检出限浓度为0.006 mg/L,测定下限为0.024 mg/L符合标准方法的要求。

This study improves the 4 -Aminoantipyrine direct spectrometric method to measure volatile phenol in＇wastewater by using potassium persulfate instead of potassium ferricyanide as oxidant. The color reaction become more complete for the stabil-ity, reproducibility and accuracy of the color reaction are better. Using this method, the minimum concentration detecting limits is 0. 006 mg/L and the bottom detection limit is 0. 024 mg/L. Both of the limits meet the standard method requirements.