电感耦合等离子体质谱法测定高纯金中杂质元素

Determination of Impurity Elements in High Purity Gold by Inductively Coupled Plasma Mass Spectrometry

通过使用电感耦合等离子体质谱仪,采用标准加入—内标法测定高纯金中银、铝、砷、铋、镉、铬、铜、铁、铱、镁、锰、钠、镍、铅、钯、铂、铑、锑、硒、锡、碲、钛和锌等23种杂质元素,并从仪器工作条件、样品制备、同位素选择、仪器模式选择等方面对方法进行了优化。该方法所测定的样品,杂质元素分析结果相对标准偏差(RSD)0.45%~6.30%,方法回收率93.2%~111.3%。

By using inductively coupled plasma mass spectrometry (ICP-MS), the impurity elements of silver, aluminium, arsenic, bismuth, cadmium, chromium, copper, iron, iridium, magnesium, manganese, sodium, nickel, lead, palladium, platinum, rhodium, antimony, selenium, tin, tellurium, titanium and zinc in high-purity gold were determined by standard addition-internal standard method, and the working conditions of the instrument, sample preparation and the same results were obtained. The method is optimized in terms of bit selection and instrument mode selection. The relative standard deviation (RSD) of impurity element analysis was 0.45 %~6.30 % and the recovery was 93.2 %~111.3 %.