Droplet method for the determination of sodium and potassium concentrations in highly saline water samples using X-ray fluorescence spectrometry

摘要: Abstract Wavelength-dispersive X-ray fluorescence spectrometry (WD-XRF) analysis could be a useful tool for the of water samples with high Na and K concentrations. In this paper, we propose droplet method XRF an appropriate filter substrate selected in terms dropping area, drying time, constant shape. addition, optimal sample volume has been determined to 10 μL. Calibration curves were generated over concentration ranges 1000–20,000 mg/L 200–1000 mg/L good relative standard deviation values. The calculated detection limit quantification values 74.1 236 mg/L 12.1 38.4 mg/L K, respectively. accuracy developed was also examined using two certified solutions shown give reliable error −23.3% 7.12% To verify feasibility WD-XRF analysis, seven samples, including seawater groundwater intrusion, analyzed. Our findings indicate that technique is suitable accurate determination concentrations without need complicated preparation methods.