By using a polytetrafluorethylene(PTFE) emulsion as fluorinating reagent, a method for fluorinating assisted eletrothermal vaporization (ETV)/ICP-AES direct determination of trace yttrium in TiO2 ceramic powder has been proposed;

• 以聚四氟乙烯（PTFE）悬浮体为氟化剂，悬浮体制样/氟化辅助电热蒸发（ETV）/ICP－AES直接测定TiO2陶瓷粉末中痕量杂质钇；