摘要
高纯金饰品当前是珠宝市场的消费热点之一.为了准确测定高纯金中的金含量,本文应用电感耦合等离子体质谱仪(ICP-MS)测定高纯金中银(Ag)、镉(Cd)、硒(Se)、砷(As)、锑(Sb)、碲(Te)、铋(Bi)、铜(Cu)、铱(Ir)、锰(Mn)、镍(Ni)、铅(Pb)、钯(Pd)、铂(Pt)、锡(Sn)、钛(Ti)、锌(Zn)、铬(Cr)、铑(Rh)19 种杂质元素的含量,联合电感耦合等离子发射光谱仪(ICP-AES)测定高纯金中铁(Fe)、铝(Al)、钠(Na)、镁(Mg)4种杂质元素的含量,最后用差减法得到其中金含量.结果表明,实验精密度(RSD,n=11)为1.05％～3.78％,加标回收率为93.0％～109.0％.本方法能够满足高纯金中杂质元素的测试要求,为其中金含量的测定提供了更精准、更环保的检测方法.
Abstract
High purity gold jewelry is one of the current consumption hotspots in the market.In order to determine the gold content in high purity gold accurately,this study determined the contents of 19 impurity elements including Ag,Cd,Se,As,Sb,Te,Bi,Cu,Ir,Mn,Ni,Pb,Pd,Pt,Sn,Ti,Zn,Cr and Rh in high purity gold by inductively coupled plasma mass spectrometry(ICP-MS),combining inductively coupled plasma-atomic emission spec-trometry(ICP-AES)to determine the contents of 4 impurity elements including Fe,Al,Na and Mg in high purity gold.The gold content was obtained by difference method.The re-sults show that the precision(RSD,n=11)range of the method is 1.05％-3.78％,and standard recovery ratio is 93.0％-109.0％.The method can satisfy the test requirements of impurity elements in high purity gold,which provides a more accurate and environmental friendly method for the detection of gold content.
NETL
NSTL
万方数据