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The rapid determination of sub-ppm heavy metals in the solution state was examined via portable X-ray fluorescence spectrometry (XRF) based on homogeneous liquid-liquid extraction (HoLLE) in the water-ethanol-dimethyl phthalate ternary component system. The percentage of cadmium extracted into the sedimented liquid phase was 91.3%. After phase separation, the volume ratio (V a /V s ) of the aqueous phase (V a ) and the sedimented liquid phase (V s ) was 121 (29.0 → 0.240 mL). Based on an analysis of the sedimented liquid phase in the solution state via the portable XRF, the presence of cadmium was determined over a concentration range of 0.100 - 4.00 mg L -1 .

analytical sciences

Rapid Determination of Sub-ppm Heavy Metals in the Solution State via Portable X-ray Fluorescence Spectrometry Based on Homogeneous Liquid-Liquid Extraction in a Ternary Component System