电感耦合等离子体发射光谱法测定金合金首饰中铂分析谱线选择  

Selection of analytical spectrum lines in the determination of Pt in gold alloy jewelry by ICP-OES

作　　者：王萍[1,2,3] 黄准 山广祺 李婷[1,2,3] 李桂华 祝培明[1,3] Wang Ping;Huang Zhun;Shan Guangqi;Li Ting;Li Guihua;Zhu Peiming(National Gold&Diamond Testing Center;Shandong Institute of Metrology,Shandong Provincial Key Laboratory of Metrology and Measurement;Social Justice and Measurement Station of Shandong Province)

机构地区：[1]国家黄金钻石制品质量监督检验中心,250014 [2]山东省计量科学研究院,山东省计量检测重点实验室 [3]山东省社会公正计量行

出　　处：《黄金》2020年第11期90-94,共5页Gold

基　　金：山东省质量技术监督系统科技计划项目(2017KY12Z00)。

摘　　要：采用电感耦合等离子体发射光谱法对金合金首饰分析过程中铂金基体溶液中的Pt进行测定,分析讨论了国家标准GB/T 38145—2019《高含量贵金属合金首饰金、铂、钯含量的测定ICP差减法》和Thermo IRIS IntrepidⅡ型电感耦合等离子体发射光谱仪及PE Optima 8300型电感耦合等离子体发射光谱仪推荐的Pt谱线在铂金基体溶液中的干扰问题。综合谱线强度、灵敏度、标准曲线相关系数、光强值、干扰谱线位置等因素,确定实际分析过程中的最佳Pt分析谱线。The inductively coupled plasma-optical emission spectrometry was employed to measure the Pt in the platinum matrix solution during the testing of gold alloy jewelry.The interference in the platinum matrix solution of the Pt spectrum lines recommended in national standard GB/T 38145—2019 High Content Precious Metals Jewelry Alloys-Determination of Gold,Platinum and Palladium-Difference Method Using Inductively Coupled Plasma-Optical Emission Spectroscopy,Thermo IRIS Intrepid II inductively coupled plasma-optical emission spectrometer and PE Optima 8300 inductively coupled plasma-optical emission spectrometer is analyzed.On the basis of spectral line intensity,sensitivity,standard curve correlation coefficient,light intensity value and interference spectrum line position,the best spectrum line for practical testing the Pt element has been confirmed.

关 键 词：电感耦合等离子体发射光谱 金合金 首饰 铂 分析谱线 

分 类 号：O657.3[理学—分析化学]