Laboratory of Analytical Chemistry;
Department of Chemistry;
University of Chittagong;
Chittagong;
Bangladesh;
Department of Applied Chemistry and Chemical Engineering;
University of Chittagong;
Chittagong;
Bangladesh;
Spectrofluorimetry; Arsenic; Determination; Groundwater; 2-(α-Pyridyl)-thioquinaldinamide; Environmental; Biological; Soil; Food; Samples;