石墨炉消解-电感耦合等离子体原子发射光谱(ICP-AES)法同时测定硫磺中6种微量元素

Simultaneous Determination of 6 Trace Elements in Sulphur by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) with Graphite Furnace Digestion

基于阿拉山口口岸重要地理位置,结合进口硫磺情况,收集阿拉山口口岸进口硫磺样品。采用石墨炉对硫磺进行消解,制备好的消解液利用电感耦合等离子体原子发射光谱法测定其中的砷、铜、铁、铅、汞、镉6种微量元素,计算元素含量,经加标回收测试表明加标回收率在93.5%~115%,测定结果满意,方法线性范围宽、检出限低、多元素同时测定、元素之间的干扰少、能适应不同样品的基体测定且准确度和精密度高。

Based on the important geographical location of the Alashankou Port, combined with the import of sulfur, samples of sulfur imported from the Alashankou Port were collected. The graphite furnace was used to digest sulfur, and the prepared digestion solution was determined by inductively coupled plasma atomic emission spectrometry. The content of six trace elements of arsenic, copper, iron, lead, mercury and cadmium was determined. Tested by spiked recovery test, and the recovery rate of the standard addition was between 93.5% and 115%. The graphite furnace-inductively coupled plasma method achieved satisfactory results. The method has wide linear range and low detection limit, simultaneous determination of multiple elements. The interference between elements is small, and the method can adapt to the matrix test of different samples with high accuracy and precision.