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
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.
张绍雨，弓振斌，黄本立*. 碱土金属的强短脉冲供电空心阴极灯激发常规炬管电感耦合等离子体离子荧光光谱初步研究[J]. 光谱学与光谱分析, 2006, 26(02): 331-335.
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 . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(02): 331-335.
[1] Demers D R, Allemand C D. Anal. Chem., 1981, 53: 1915. [2] Corp Baird. "Atomic fluorescence spectrometer Plasma AFS-2000"(operating manual), 1987. [3] HUANG Ben-li, YANG Peng-yuan, LIN Yue-he, et al(黄本立，杨芃原，林跃河，等). Chinese J. Anal. Chem.(分析化学), 1991, 19(3): 259. [4] GONG Zhen-bin, YANG Peng-yuan, LIN Yue-he, et al.(弓振斌，杨芃原，林跃河，等). Chemical J. of Chinese Universities(高等学校化学学报), 1995, 16(7): 1037. [5] ZHANG Shao-yu, GONG Zhen-bin, HUANG Ben-li, et al(张绍雨，弓振斌，黄本立，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 1997, 17(5): 67. [6] ZHANG Shao-yu, HUANG Ben-li, GONG Zhen-bin(张绍雨，黄本立，弓振斌). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2001, 21(5): 632. [7] Greenfield S, McGeachin H M, Smith P B. Anal. Chim. Acta, 1967, 84: 76. [8] Kosinski M A, Uchida H, Winefordner J D. Tananta, 1983, 30(5): 39. [9] Parsons M L, Smith B W, Bentley G E. Handbook of Flame Spectroscopy, New York: Plenum Press, 1975.
