A method, was developed for the determination of trace Dy and Y in biological and environmentar water samples based on solidified floating organic drop microextraction (SFODME) combined with electrothermal vaporization (ETV) inductively coupled. plasma mass spectrometry (ICP-MS). l-(2-pyridylazo)-2-naphthol (PAN) was used as both chelating reagent in SFODME and chemical modifier in ETV for separation, preconcentration, and volatilization of the REEs prior to their determination. The main factors affecting the preconcentration and determination, including pH, amount of PAN, extraction time, sti...
