title: Membrane filtration of Sudan orange G on a cellulose acetate membrane filter for separation-preconcentration and spectrophotometric determination in water, chili powder, chili sauce and tomato sauce samples.
abstract: A simple membrane filtration procedure for separation-enrichment of Sudan orange G is presented. The method is based on the adsorption of Sudan orange G on a cellulose acetate filter and its elution from the membrane with 10 mL of ethanol. Sudan orange G in the eluent was determined by UV-visible spectrophotometry at 388 nm. The effect of analytical conditions, including pH, flow rates and eluent, sample volume, type of membrane for quantitative preconcentration and separation of Sudan orange G were examined. The influences of matrix components on Sudan orange G recoveries were studied. The preconcentration factor was 125. The detection limit was 4.9 μg L(-1). The relative standard deviation was 4.3%. The presented procedure was applied to chili powder, chili sauce, tomato sauce, powdered beverage and water samples.
authors.affiliation: Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
authors.forename: Zeid A
authors.initials: ZA
authors.lastname: ALOthman
authors.forename: Yunus E
authors.initials: YE
authors.lastname: Unsal
authors.forename: Mohamed
authors.initials: M
authors.lastname: Habila
authors.forename: Azza
authors.initials: A
authors.lastname: Shabaka
authors.forename: Mustafa
authors.initials: M
authors.lastname: Tuzen
authors.forename: Mustafa
authors.initials: M
authors.lastname: Soylak
mesh_terms: D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D004396:Coloring Agents / Q000302:isolation & purification*; D005374:Filtration / Q000379:methods*; D005504:Food Analysis; D006863:Hydrogen-Ion Concentration; D008567:Membranes, Artificial; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*
chemical_list: D004396:Coloring Agents; D008567:Membranes, Artificial; C005062:acetylcellulose; D002482:Cellulose