平台石墨炉原子吸收法中海水的背景吸收影响

STUDY OF THE BACKGROUND ABSORPTION OF SEAWATER IN PLATFORM GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY

研究了石墨炉原子吸收中海水的背景吸收特性及其在石墨管内的蒸发行为、原子化条件、基体改进剂及用量．进行了纯NaCl，MgCl2。，MgSO4基体的背景吸收与波长的关系及其蒸发行为的研究，从而对石墨炉原子吸收中海水的背景吸收的影响及机理进行了探讨．

This paper discusses the characteristics of background absorption of seawater in platform graphite furnace AAS, including those of the wavelength and time, the evaporation behavior within graphite tube and the atomization condition, the matrix modifier and its amount. The relationship between background absorption and wavelength and the evaporation behavior of pure NaCl, MgCl, and MgSO4 is tested. The effects and mechanisms of background absorption of seawater in platform graphite furnace AAS are studied.