Beneath the Surface: A Case of Intussusception due to a Submucosal Lipoma in an Adult Patient

Abstract

A simple, rapid, accurate and sensitive spectrophotometric method for determination of Lidocaine hydrochloride has been developed. The proposed method is based on the reaction between chloride ion and mercuric thiocyanate, formation of a colored complex by the reaction between released thiocyanate and ferric ions to form red soluble product with maximum absorption at 460 nm. Beer's law is obeyed over the concentration range of 2-28µg/ml, with molar absorptivity of 0.659×104 l/mol.cm. The present method is simple because it does not need either heating or hydrolysis or solvent extraction steps. The method has been successfully applied for the determination of Lidocaine hydrochloride in pure form, pharmaceutical preparations (Gels and Ampules) and environmental wastewater sample.