SEARCH Articles Figures Tables Cationic surfactants quaternary alkyl ammonium Quaternary ammonium salts cationic surfactants Quaternary ammonium surfactants disinfectant cleaners Quaternary ammonium surfactants sanitizers Quaternary ammonium-based cationic surfactants Quaternary surfactants Surfactant quaternary ammonium cation Surfactants quaternary ammonium compounds