微波消解-ICP-MS法测定天舒胶囊中5种重金属元素

摘要

目的：使用电感耦合等离子体质谱（ICP-MS）仪，建立天舒胶囊中Cu、As、Pb、Cd、Hg 5种重金属元素的测定方法。方法：样品经过微波消解处理后，采用外标法，以ICP-MS进行测定。结果：各元素线性关系良好（r＞0.9990），最低检测限为（0.0014~0.8237）μg·L-1，回收率为98.4%~114.1%。结论：该方法准确、简便、快速、灵敏，适用于天舒胶囊内容物中重金属的含量测定。%Objective: To provide a method for the simultaneous analysis of five heavy metals, including Cu, As, Pb, Cd and Hg, in TianShu capsules. Methods: Five heavy metals in TianShu capsules were de-termined by a method of inductivity coupled plasma-mass spectrometry with microwave-assisted digestion. Results: The correlation coefficients were better than 0.999. The method detection limits for all target ele-ments were in the range of (0.0014-0.8237)μg·L-1, and the recoveries ranged in 98.4%-114.1%. Conclu-sion: This method is accurate, convenient, rapid and highly sensitive and can be applied to determine the five heavy metals, including Cu, As, Pb, Cd and Hg, in TianShu capsules.