Author/Authors :
Chلvez، نويسنده , , Gerson and Bravo، نويسنده , , Bélgica and Piٌa، نويسنده , , Nolberto and Arias، نويسنده , , Mَnica and Vivas، نويسنده , , Eliseo and Ysambertt، نويسنده , , Fredy and Mلrquez، نويسنده , , Nelson and Cلceres، نويسنده , , Ana، نويسنده ,
Abstract :
In this study, high-performance liquid chromatography (HPLC) in conjunction with continuous derivatization for the determination of aliphatic and polyethoxylated alcohol is reported. Reaction of alcohol group with phenyl isocyanate or benzyl chloride reagents assisted with microwaves (MW) irradiation is carried out in an on-line system coupled to HPLC with photodiode array detection (PDA). Reactor was placed into a microwave oven at 450 W. The flow rate, reagent amounts, irradiation time, and chromatographic conditions were optimized. The continuous analysis using the system MW-HPLC-PDA provided high sensitivity, reduce the amount of reagents and analysis time. This proposed method can be used for the analysis of commercial alcohol polyethoxylated mixture.
Keywords :
Microwave assisted reaction , On-line systems , Polyethoxylated alcohol surfactants , Continuous analysis
