Abstract

Graphite furnace atomic absorption spectrometry (GFAAS) is a highly sensitive method for the determination of elements in samples while requiring a low sample volume. The analytes are converted to atoms at high temperatures in an electrothermally heated atomizer. Although line-source GFAAS continues to widely employed, high-resolution continuum source (HR-CS) GFAAS offers more accurate correction for matrix-induced spectral backgrounds. This article reviews recent innovations and developments in GFAAS, including instrumentation; the characterization of fundamental properties; progress in HR-CS GFAAS; sample preparation procedures including vapor generation, solid, and slurry sampling; elemental speciation; preconcentration/separation protocols; and direct analysis. The conclusion summarizes major developments and future directions in GFAAS.

摘要

石墨炉原子吸收光谱法 (GFAAS) 是一种高度灵敏的方法，用于测定样品中的元素，同时需要低样品量。在电热加热雾化器中，分析物在高温下转化为原子。尽管线源 GFAAS 继续得到广泛应用，但高分辨率连续谱源 (HR-CS) GFAAS 可为基质引起的光谱背景提供更准确的校正。本文回顾了 GFAAS 的最新创新和发展，包括仪器；基本属性的表征；HR-CS GFAAS 的进展；样品制备程序，包括蒸汽发生、固体和浆液取样；元素形态；预浓缩/分离方案；和直接分析。结论总结了 GFAAS 的主要发展和未来方向。