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气相富集原子光谱分析技术研究进展
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作者单位
刘腾鹏,刘美彤,刘霁欣,毛雪飞,钱永忠 中国农业科学院农业质量标准与检测技术研究所农业农村部农产品质量安全重点实验室 
基金项目:国家重点研发计划(2017YFD0801203);国家自然科学基金面上项目(31571924);中国农业科学院基本科研业务费专项(Y2019XK05,1610072018003,1610072019001)资助
中文摘要:作为一种简单、高效、低耗的预富集方法,气相富集技术(GPE)可作为原子光谱仪器的关键部件用以提高分析灵敏度、消除基体干扰,在原子光谱的小型化、现场化研究领域已得到广泛应用。GPE是通过氢化物发生、紫外蒸气发生、电热蒸发等进样方式使样品转换为气态分析物,被石英、碳、金属等材料捕获在富集装置中,其中捕获/释放条件也是决定元素预富集的关键因素,主要包括冷捕获、合金捕获、热捕获、介质阻挡放电等富集/释放方式。该文综述了GPE技术在原子光谱领域的研究进展,从进样方式、捕获材料、捕获/释放方式等方面进行了分析与探讨,并对其研究和应用前景进行了展望。
中文关键词:气相富集  原子光谱  元素分析  样品导入  捕获/释放
 
Progresses of Gas Phase Enrichment Atomic Spectrometry in Elemental Analysis
Abstract:As a pre-concentration method with the advantages of simplicity,high efficiency and low consumption,gas phase enrichment techniques(GPE) have become the key factors for various atomic spectrometers to enhance analytical sensitivity and eliminate matrix interference for the purpose of instrumental miniaturization and on-site analysis.Samples have to be converted into gaseous analytes for the sample introduction of GPE by means of hydride generation,ultraviolet vapor generation and electrothermal vaporization,then the elements for measurement are trapped or released with materials like quartz,carbon and metal,etc.,of which the trapping or releasing approaches are also the crucial factors for GPE,such as cold trapping,alloy trapping,thermal trapping and dielectric barrier discharge,etc.Hereon,the development progresses of GPE in atomic spectrometry are discussed,including the sample introduction,trapping materials and trapping or releasing approaches.Furthermore,the prospectives for research and application of GPE techniques are proposed as well.
Key Words:gas phase enrichment  atomic spectrometry  elemental analysis  sample introduction  trapping/releasing
引用本文:刘腾鹏,刘美彤,刘霁欣,毛雪飞,钱永忠.气相富集原子光谱分析技术研究进展[J].分析测试学报,2019,(6):744-754.
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