Preconcentration and Determination of Theophylline in Water Samples using Magnetic Nano-Cellulose with Dispersive Solid Phase Extraction

Faculty of Pharmaceutical Sciences, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran

Department of chemistry, Varamin Pishva Branch, Islamis Azad University, Varamin, Iran

Faculty of Medicinal Chemistry, Department of Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran

Faculty of Pharmaceutical Sciences, Department of Medicinal Chemistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran