雨水中過酸化水素のチタン(IV)4-(2-ピリジルアゾ)レソルシノール試液によるフローインジェクション分析

抄録

A sensitive flow injection method for the determination of hydrogen peroxide using titanium (IV)-4-(2-pyridylazo)resorcinol (denoted as Ti-PAR) reagent was described. The Ti-PAR reagent reacts with hydrogen peroxide to form Ti(IV)-PAR-H₂O₂ complex exhibiting the absorption maximum at 508 nm. The linear response was obtained in the range of 1.36-1360ppb of hydrogen peroxide for a 100 μl sample. The method was applied in dealing with 40samples per hour, and the results were accurate with the relative standard deviation of 0.8% for the injection of 34 ppb hydrogen peroxide (n=10). The contents of hydrogen peroxide in rainwater collected in Tokyo area were obtained by this method with satisfactory results.