Local effects of atomizing analyte droplets on the plasma parameters of the inductively coupled plasma
Local effects of atomizing analyte droplets on the plasma parameters of the inductively coupled plasma
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DOI：
10.1016/j.sab.2009.02.008
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发表时间：
2009-03-01
影响因子：
3.3
通讯作者：
Niemax, Kay
中科院分区：
文献类型：
--
作者：
Groh, Sebastian;Garcia, Carmen C.;Niemax, Kay
将来自分析物水溶液的单分散液滴以选定的直径在35-67 μ m范围内引入到感应耦合等离子体中，频率在每秒1 - 10滴之间。本文用发射光谱法研究了ICP中的去溶剂化和原子化效应。通过同时测量ICP中的氢、分析物和Ar谱线，研究了ICP中的去溶剂化和分析物原子化的起始和氢的快速扩散及其对等离子体的影响。通过分析物原子化的局部冷却以及完成原子化后等离子体激发温度的恢复，定量地测量依赖于时间的应用玻尔兹曼图方法，同时记录作为等离子体探针的原子化分析物原子的线强度。此外，它示出，相对较小的差异，在分析物质量引起显着的温度变化，在雾化过程中，因此，强烈的变化，在雾化过程中的分析物线的发射强度，如果测量端上的观察。(C)2009爱思唯尔有限公司版权所有。
Monodisperse droplets from aqueous analyte Solutions with selected diameters in the range 35-67 mu m are introduced into an inductively coupled plasma with frequencies between 1 to 10 droplets per second. The effect of desolvation and atomization in the ICP is Studied end-on by optical emission spectroscopy employing simultaneously Lip to three calibrated monochromators with fast photomultipliers, The onsets of desolvation and analyte atomization and the extremely fast diffusion of hydrogen in the ICP and its effect oil the plasma are Studied by simultaneous measurements of hydrogen, analyte and Ar lines. The local cooling by analyte atomization as well as the recovering of the plasma excitation temperature after completed atomization is measured quantitatively in dependence on time applying the Boltzmann plot method to Simultaneously recorded line intensities of atomized analyte atoms which act as plasma probes. Furthermore, it is shown that relatively small differences in analyte mass Cause significant temperature changes during atomization and, as consequence, strong variations of the emission intensity of analyte lines during atomization if measured by end-on observation. (C) 2009 Elsevier B.V. All rights reserved.