Cloud Point Extraction for Spectrophotometric Determination of Acid Blue 29 Dye in Water Samples
A simple and fast Cloud Point Extraction (CPE) preconcentration of Acid Blue 29 (AB 29) dye
was developed prior to its spectrophotometric determination. The suggested procedure was
successfully applied for the determination of AB 29 dye in different water samples with high
recoveries. Optimization of experimental conditions such as surfactant type and volume, pH,
stirring, and centrifugation conditions were studied. The effect of interfering ions was also studied.
The calibration curve was in the range of 0.4-10 μgmL-1 with a limit of detection and limit of
quantitation of 0.35 and 1.1 μgmL-1, respectively. Furthermore, the method is free of the
interference of common ions present inwater.
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