A CONVENIENT MULTI-PARAMETER WATER QUALITY ANALYSIS BY ONSITE FILTERED SAMPLE FOR EUTROPHICATION MONITORING

Abstract

Ion Chromatography and Flow Injection Analysis systems were integrated by a switching valve. Then, sampling kit was designed by disposable syringe, 0.45um syringe filter, and 2mL plastic vial. 13 water samples were collected from oxidation pond and natural stream in a University campus. Four analytical modes were applied for standard solutions and the environmental samples. The detection limit (S/N =3) in µM/L were as follows, SO₄^2- (0.31), Cl^- (0.50), NO₃^- (0.89), Na⁺ (0.52), NH₄⁺ (0.94), K⁺ (1.24), Mg²⁺ (0.76), Ca²⁺ (1.75), NO₂^- (0.02), and PO₄^3- (0.12), and its EC was 0.03µS/cm. Our analytical approach was simple, rapid,low-cost, and multi-parameter that was satisfactory to assess the water samples. Due to the sampling, transportation, storage processes are drastically improved, our approach has potential to contribute to strategic environmental assessment.