A Theoretical Study into the Spatial Distribution of Atoms Surrounding an Individual Solute Particle Vaporizing in an Analytical Flame.
A Theoretical Study into the Spatial Distribution of Atoms Surrounding an Individual Solute Particle Vaporizing in an Analytical Flame.
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对分析火焰中蒸发的单个溶质粒子周围原子空间分布的理论研究。
DOI：
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
G. Hieftje
中科院分区：
文献类型：
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作者：
C. Boss;G. Hieftje
摘要：本文建立了一个理论模型，描述了层流火焰或等离子体中单个溶质粒子周围的蒸气云中分析物原子的空间分布，分析物的蒸发和扩散速率对空间分布的协同效应。蒸发和扩散过程的数学卷积用于描述分析物的空间分布。不幸的是，由此产生的卷积积分不能解决封闭形式的实验观察到的汽化功能，和几个简化近似的汽化功能进行了比较，并显示是有用的。与这个新的模型，分析的扩散系数和蒸发速率的变化的后果进行检查，并在一个典型的分析物颗粒的原子的空间分布的变化进行了比较。（作者）
Abstract : A theoretical model is developed to describe the synergic effects of analyte vaporization and diffusion rates on the spatial distribution of analyte atoms in the vapor cloud surrounding an individual solute particle in a laminar flame or plasma. A mathematical convolution of the vaporization and diffusion processes is used to describe the analyte spatial distribution. Unfortunately, the resulting convolution integral cannot be solved in closed form for the experimentally observed vaporization function, and several simplifying approximations to the vaporization function are compared and shown to be useful. With this new model, the analytical consequences of changes in both diffusion coefficient and vaporization rate are examined, and the resulting changes in spatial distribution of atoms about a typical analyte particle are compared. (Author)