ADVENTITIOUS CARBON - THE PANACEA FOR ENERGY REFERENCING
ADVENTITIOUS CARBON - THE PANACEA FOR ENERGY REFERENCING
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DOI：
10.1002/sia.740040204
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发表时间：
1982-01-01
影响因子：
1.7
通讯作者：
SWIFT, P
中科院分区：
文献类型：
--
作者：
SWIFT, P
一个简短的历史回顾已被分配到样品表面的碳氢化合物污染的C1电子的结合能的值。确定了用于C1s测定的每个电子能谱仪的特定能量校准技术。有显着的变化，在C1selectron结合能的碳氢化合物污染层相对于基板上，它被测量。讨论了外源碳的可能来源和性质，以及影响其C1s结合能值的因素。磷酸钠盐已被用来说明使用内部能量参考线，而不是从这些盐的外来碳层的C1电子的相对优点。替代能源的参考技术，其中包括从蜡烛火焰和故意的挥发性有机化合物到样品表面上的“原位”冷凝的烟灰沉积，已与正在审查的方法进行了比较。另一种可能的方法是将粉末样品与参考化合物（例如石墨）混合。它的结论是，虽然使用C1选择子从外来碳层往往是一个方便的方法，能源参考，解释所获得的结合能数据应谨慎对待。
A brief historical review has been made of the values assigned to the binding energy of C1selectrons from hydrocarbon contamination on sample surfaces. The particular energy calibration technique used for each electron spectrometer on which the C1sdetermination was made has been identified. There are notable variations in the C1selectron binding energy for a hydrocarbon contamination layer with respect to the substrate on which it was measured. The possible source and nature of adventitious carbon have been discussed, as have factors which can affect its C1sbinding energy value. Sodium phosphate salts have been used to illustrate the relative merits of using an internal energy reference line rather than the C1selectrons from the adventitious carbon layers of these salts. Alternative energy referencing techniques, which include deposition of soot from a candle flame and deliberate ‘in situ’ condensation of a volatile organic compound onto the sample surface, have been compared with the method under review. Another possible method is the mixing of powdered samples with reference compounds (e.g. graphite). It is concluded that, although the use of C1selectrons from adventitious carbon layers is often a convenient method of energy referencing, interpretation of binding energy data obtained should be treated with caution.