催化动力学测定痕量对苯二酚  

Determination of trace hydroquinone by catalytic kinetic spectrophotometry

作　　者：黄湘源[1] 徐春秀[1] 

机构地区：[1]南昌大学化学系,南昌330047

出　　处：《分析试验室》2003年第6期37-39,共3页Chinese Journal of Analysis Laboratory

摘　　要：研究了在pH7.3的KH2PO4 Na2HPO4缓冲介质中,痕量对苯二酚催化高碘酸钾氧化靛红褪色的新指示反应及其动力学条件,建立了动力学光度法测定痕量对苯二酚的新方法。该方法检出限为6.8×10-6g L,线性范围是0.04～0 18μg mL和0.28～0.54μg mL。可用于显影废液中对苯二酚的测定。Hydroquinone could catalyze the discoloration of indigo carmine by potassium periodate in KH2PO4Na2HPO4 medium. Based on this, a new method for the determination of trace hydroquinone was established using catalytic kinetic spectrophotometry. Its linear ranges were 0.04～0.18 μg/mL and 0.28～0.54 μg/mL with the detection limit of 6.8×10-6 g/L. It was applied to the determination of hydroquinone in waste development reagent with good results.

关 键 词：对苯二酚 痕量分析 催化动力学光度法 显影废液 环境监测 

分 类 号：X830.2[环境科学与工程—环境工程]