title: Validation of the removal of acetylsalicylic acid. Recovery and determination of residues on various surfaces by high performance liquid chromatographic.
abstract: The validation of a procedure to clean glass, vinyl and stainless steel surfaces that have been exposed to acetylsalicylic acid during its manufacture is described. The cleaning procedure using two cotton swabs moistened with the mobile phase was validated using a wipe-test and a high-performance liquid chromatography (HPLC) method developed to determine low quantities of the acid. The HPLC method involves an octadecylsilane column at 55 degrees C, a mixture of water-acetonitrile-orthophosphoric acid (779:220:1, v/v) as mobile phase and detection at 226 nm. Recoveries of 86%, 90% and 94% were obtained from vinyl, glass and stainless steel plates respectively. The validation gave acceptable levels of sensitivity, recovery, precision and linearity.
authors.affiliation: Department of Analytical Chemistry, Faculty of Sciences, University of Valladolid, Spain.
authors.forename: M J
authors.initials: MJ
authors.lastname: Nozal
authors.forename: J L
authors.initials: JL
authors.lastname: Bernal
authors.forename: L
authors.initials: L
authors.lastname: Toribio
authors.forename: J J
authors.initials: JJ
authors.lastname: Jiménez
authors.forename: M T
authors.initials: MT
authors.lastname: Martín
mesh_terms: D001241:Aspirin / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
chemical_list: D001241:Aspirin