光谱学与光谱分析 |
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High Current Microsecond Pulsed Hollow Cathode Lamp Excited Ionic Fluorescence Spectrometry of Alkaline Earth Elements in Inductively Coupled Plasma with a Fassel-Torch |
ZHANG Shao-yu, GONG Zhen-bin, HUANG Ben-li* |
College of Chemistry and Chemical Engineering, Key Laboratory of Analytical Sciences of Ministry of Education of China, Xiamen University, Xiamen 361005, China |
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Abstract High current microsecond pulsed hollow cathode lamp (HCMP-HCL) excited ionic fluorescence spectrometry (IFS) of alkaline earth elements in inductively coupled plasma (ICP) with a Fassel-torch has been investigated. In wide condition ranges only IFS was observed, whilst atomic fluorescence spectrometry (AFS) was not detectable. More intense ionic fluorescence signal was observed at lower observation heights and at lower incident RF powers. Without introduction of any reduction organic gases into the ICP, the limit of detection (LOD, 3σ) of Ba was improved by 50-fold over that of a conventional pulsed (CP) HCL with the Baird sleeve-extended torch. For Ca and Sr, the LODs by HCMP-HCL-ICP-IFS and CP-HCL-ICP-AFS show no significant difference. Relative standard deviations were 0.6%-1.4%(0.1-0.2 μg·mL-1, n=10) for 5 ionic fluorescence lines. Preliminary studies showed that the intensity of ionic fluorescence could be depressed in the presence of K, Al and P.
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Received: 2004-12-28
Accepted: 2005-04-18
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Corresponding Authors:
HUANG Ben-li
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Cite this article: |
ZHANG Shao-yu,GONG Zhen-bin,HUANG Ben-li. High Current Microsecond Pulsed Hollow Cathode Lamp Excited Ionic Fluorescence Spectrometry of Alkaline Earth Elements in Inductively Coupled Plasma with a Fassel-Torch [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(02): 331-335.
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URL: |
https://www.gpxygpfx.com/EN/Y2006/V26/I02/331 |
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