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过去20年来,火焰和电热原子光谱化学分析方法的应用已很普遍。然而,这些方法的缺点是需要将试样制成溶液,这意味着对于难溶物质常需复杂、费时的分解方法,使这些技术的潜在速度不能充分体现。Langmyhr(1979)对固体物质直接分析的优点及可能性作了评价,并得出结论:试样的均匀性、微量标样必须重复以及分析速度慢等问题,妨碍着这种分析的广泛应用。 有些作者已经阐明,将所用试样研磨成细颗粒,在搅动下使其悬浮在水或有机介质中,能使泥浆直接
The use of flame and electrothermal atomic spectroscopy chemical analysis methods has become commonplace over the past two decades. However, the disadvantage of these methods is that the sample needs to be made into a solution, which means that complicated and time-consuming decomposition methods are often required for insoluble substances, so that the potential speed of these technologies can not be fully reflected. Langmyhr (1979) evaluated the advantages and possibilities of direct analysis of solid materials and concluded that the uniformity of the sample, the need to repeat the trace standards, and the slowness of the analysis have hindered the widespread use of such analysis. Some authors have clarified that grinding the sample used to fine particles, suspending it under agitation in water or in an organic medium, enables the slurry to be directed