建立了电感耦合等离子体质谱法同时测定动物肝脏中16种稀土元素的方法。样品经密闭高压消解后,以103Rh为内标元素消除非质谱干扰,氨气为动态反应气消除质谱干扰,采用电感耦合等离子体质谱法进行测定。16种稀土元素在测定范围内线性关系良好(R>0.999),方法的检出限为0.2~33.3 ng/L。方法经国家一级标准物质验证,结果与标示值相符。 A method for simultaneous determination of 16 rare earth elements in animal liver by inductively coupled plasma mass spectrometry was established. After the sample was sealed and autoclaved, 103Rh was used as an internal standard element to eliminate non-MS interference. Ammonia was used as a dynamic reaction gas to eliminate MS interference and determined by inductively coupled plasma mass spectrometry. The linear relationship of 16 rare earth elements in the determination range (R> 0.999), the detection limit of the method is 0.2 ~ 33.3 ng / L. The method was verified by the national first-class reference material and the result was in line with the indicated value.