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前言 本文的目的在于建立一个快速测定地球化学样品中的锡的工业方法,该法使锡呈适当的形式以达到比在水溶液中用氧化亚氮-乙炔焰测定可能达到的更高的灵敏度,而且获得地球化学测定所需的准确度和精度。 原子吸收分光光度法测定锡时,采用有机溶剂可提高灵敏度,而选择性萃取则可减少干扰。和其他几种有机溶剂及水相比,甲基异丁基酮(MIBK)能够增加试样溶液的提升量和改进喷雾效率,以致增加样品进入火焰的百分比,提高了灵敏度。此外,MIBK
INTRODUCTION The purpose of this paper is to establish an industrial method for the rapid determination of tin in geochemical samples by adapting the tin in its proper form to achieve a higher sensitivity than would be possible with an N2O-acetylene flame assay in aqueous solution, and Obtain the accuracy and accuracy needed for geochemical measurements. Atomic absorption spectrophotometry for the determination of tin, the use of organic solvents can increase the sensitivity, and selective extraction can reduce the interference. Compared with several other organic solvents and water, methyl isobutyl ketone (MIBK) can increase the sample solution lift and improve the spray efficiency, so as to increase the sample into the flame percentage, increased sensitivity. In addition, MIBK