论文部分内容阅读
１引言原子吸收光谱法是测定生物、地质和环境样品中铊的重要方法，但多以电热原子吸收光谱法为主。常规的火焰原子吸收光谱法由于测定灵敏度低则往往难以满足分析要求。溶剂萃取预处理直接进行原子吸收光谱测定痕量元素，可起到分离富集的作用并能提高灵敏度和选择性，而流动
1 Introduction Atomic absorption spectrometry is an important method for the determination of thallium in biological, geological and environmental samples, but mostly by electrothermal atomic absorption spectrometry. Conventional flame atomic absorption spectrometry is often difficult to meet the analytical requirements due to its low sensitivity. Solvent extraction pretreatment direct determination of trace elements atomic absorption spectrometry, can play the role of separation and enrichment and can improve the sensitivity and selectivity, and the flow