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微波消解-萃取—ICP-MS法测定高纯金中杂质元素
- 张义丞|孟建华|赫婷婷|许晓菁|牛治燕|于晓辉
- 作者单位：
- 天津市产品质量监督检测技术研究院|国家金银饰品质量监督检验中心(天津)）|国家金银饰品质量监督检验中心(天津)）|天津市产品质量监督检测技术研究院|天津市产品质量监督检测技术研究院|天津市产品质量监督检测技术研究院
基金项目：
- isnull
详细信息：
- 作者简介：
- 张义丞(1982—)，男，天津人,工程师，硕士，从事产品检测技术研究与评测工作；天津市东丽区空港经济区西十道106号D座433，天津市产品质量监督检测技术研究院，300384；E-mail：14754884@qq.com
- 通讯作者：
- isnull
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Determination of the impurity elements in high purity gold using ICP-MS method following a microwave assisted digestion and extraction
- English Author：
- Tianjin Product Quality Supervision and Inspection Institute of Technology|National Testing Center for Gold and Silver Jewelry(Tianjin)|National Testing Center for Gold and Silver Jewelry(Tianjin)|National Testing Center for Gold and Silver Jewelry(Tianjin)|Tianjin Product Quality Supervision and Inspection Institute of Technology|Tianjin Product Quality Supervision and Inspection Institute of Technology|Tianjin Product Quality Supervision and Inspection Institute of Technology
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
采用国家标准方法ICP-MS法测定高纯金中的杂质元素时，利用传统湿法消解样品后，大量金基体对杂质元素测定产生干扰和抑制作用，影响测定结果的准确度。实验建立微波消解-萃取—ICP-MS法测定高纯金中杂质元素的方法，并对微波消解-萃取条件进行优化，提高金溶解率及金萃取率，消除金基体对杂质元素测定的干扰。该方法可同时测定40种杂质元素，检出限为0.01～0.29 μg/g，测定结果相对标准偏差(n=6)为1.29 %～4.18 %，加入标准物质回收率为86.94 %～115.55 %，准确度和精密度良好。
关键词:
微波消解；微波萃取；ICP-MS；高纯金；杂质元素
Abstract:
When impurity elements in high purity gold are determined by national standard ICP-MS method,a great deal of gold matrix after wet digestion has interference and inhibition on the determination of impurity elements,which affects the accuracy of the determination results.A new microwave assisted digestion and extraction with ICP-MS method for determination of impurity elements in high purity gold was developed and the experimental conditions of microwave assisted digestion extraction were optimized to improve the separation efficiency of gold matrix and eliminate the interference of gold matrix on the determination of impurities.The method can determine 40 types of impurity elements at the same time,the limits of detection were 0.01-0.29 μg/g,the relative standard deviations (n=6)were 1.29 %-4.18 %,and the recoveries of reference material were 86.94 %-115.55 %,with good accuracy and precision.
Keywords:
microwave assisted digestion;microwave assisted extraction;ICP-MS;high purity gold;impurity element
