Flow injection analysis system with smart phone  for the  determination  of  total  phenolic compounds in wastewater using Folin Ciocalteu reagent

Abstract

Smart phones are playing a big role in daily life and are being employed as supporting hardware in a variety of chemical analysis applications. flow injection analysis method for the rapid, simple, and straightforward determination of total phenols using Folin-Cioclteu reagent .The sample or standard solutions were injection into a carrier stream to react with reagent and detected by spectrophotometer at 765 nm . The experimental conditions such as flow rate of reagent and carrier ,reagent volume ,length of reaction coil and concentration of reagent were optimized .A good linear calibration curve in the range of (250-2000 mg L-1 ) was obtained with regression equation ( y=0.0123 x + 0.1857) ,( R= 0.999 ), the limit of detection was in the amount of ( 0.0102 mg L-1) .The method was successfully applied for the determination of the total phenols in wastewater .