Investigation of sample introduction- and plasma-related matrix effects in inductively coupled plasma spectrometry applying single analyte droplet and particle injection

Investigation of sample introduction- and plasma-related matrix effects in inductively coupled plasma spectrometry applying single analyte droplet and particle injection
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应用单分析物液滴和颗粒注射的电感耦合等离子体光谱法研究样品引入和等离子体相关的基质效应

DOI:
10.1016/j.sab.2011.12.003
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发表时间:
2012
期刊:
Spectrochimica Acta Part B: Atomic Spectroscopy
影响因子:
--
通讯作者:
K. Niemax
K. Niemax
中科院分区:
--
文献类型:
--
作者:
A. Murtazin;S. Groh;K. Niemax

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本文用同时发射光谱法研究了电感耦合氩等离子体中分析物原子化的空间和时间分辨率。样品或者作为分析物溶液的单个单分散微滴引入,或者以嵌入微滴中的具有窄尺寸分布的球形纳米颗粒或微米颗粒的形式引入。虽然端对光谱提供了在通过ICP的单个注入事件的传输期间的总雾化过程的定量信息,侧对测量提供了该过程的空间位置。它示出,有显着的空间位移的位置依赖于喷射器的气体流量,液滴大小,分析物的质量,和伴随元素的质量的分析物雾化。这些偏移对ICP中特定位置处的分析物云的大小具有直接影响,例如,在ICP-MS中质谱仪的取样器位置,因此,对该技术的检测效率有影响。此外,分析物的电离以及元素相关的扩散的动态过程中的空间和时间分辨率进行了研究。
Analyte atomization in an inductively coupled argon plasma is studied with spatial and temporal resolution by simultaneous side- and end-on emission spectroscopy. The samples are either introduced as single monodisperse microdroplets of analyte solution or in form of spherical nano- or microparticles with narrow size distributions embedded in microdroplets. While end-on spectroscopy provides quantitative information on the total atomization process during the transport through the ICP of a single injection event, side-on measurements deliver the spatial positions of the processes. It is shown that there are significant spatial shifts of the position of analyte atomization in dependence on injector gas flow, droplet size, analyte mass, and the mass of accompanying elements. These shifts have direct influence on the size of the analyte clouds at a particular position in the ICP, e.g., at the position of the sampler of a mass spectrometer in ICP-MS, and, therefore, on the detection efficiency of this technique. Furthermore, the dynamic processes of analyte ionization as well as element dependent diffusion were studied with spatial and temporal resolution.
DOI: --
发表时间: 1979
期刊:
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通讯作者: G. Hieftje
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发表时间: 2006-08
期刊: Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子: --
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发表时间: 2011
期刊:
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DOI: 10.1016/j.sab.2009.02.008
发表时间: 2009-03-01
影响因子: 3.3
作者:
Groh, Sebastian;Garcia, Carmen C.;Niemax, Kay
通讯作者: Niemax, Kay
DOI: --
发表时间: 1990
期刊:
影响因子: --
作者:
P. B. Farnsworth;Benjamin W. Smith;N. Omenetto
通讯作者: N. Omenetto