采用ICP-MS同时测定十七种酒中8种重金属元素的含量

Determination of 8 Heavy Metals in 17 Kinds of Liquors by ICP-MS

建立了电感耦合等离子体质谱（ICP-MS）法测定17种国内外酒中铁（^56Fe）、铜（^63Cu）、锌（^65Zn）、砷（^75As）、镉（^114Cd）、锡（^118Sn）、汞（^202Hg）、铅（^208Pb）共8种重金属元素含量的方法。样品经微波消解,以锗（^72Ge）、铟（^115In）、铋（^209Bi）为内标,采用ICP-MS法同时测定上述8种重金属元素的含量。对于各测定元素,标准曲线的相关系数r=0.9996~0.9999,加标回收率为96%~105%。结果表明,采用所建立的ICP-MS法分析酒类重金属元素,具有准确度高、分析快速、简便的优点,为酒类行业质量控制提供参考依据。

An ICP-MS method for the determination of 8 heavy metals,including Ferrum（^56Fe）,Copper（^63Cu）,Zinc（^65Zn）,Arsenium（^75As）,Cadmium（^114Cd）,Stannum（^118Sn）,Hydrargyrum（^202Hg）,Plumbum（^208Pb）,in17 kinds of liquors at home and abroad was established. The samples were digested by closed-vessel microwave. The eight heavy metals were directly analyzed by ICP-MS,with elements^72 Ge,^115In and^209 Bi as the internal standards. For all of the analyzed heavy metals,the correlative coefficients of the calibration curves were in the range of 0. 9996 ~0. 9999. The recoveries were in the range of 96% ~ 105%. The results indicated that the method was of high accuracy,simple,can use in rapid analysis,which can provide frame for the quality control of the liquors.