Abstract:In an attempt to inhance the emission intensity of ICP, a conventional concentric pneumatic nebulizer was used with increased pressure, and the aqueous aerosol was partially let out to modulate the flow velocity of sample solution into the flame of the ICP. In the present work, the emission spectra of elements Ca, Si, Sr and Zn in water samples were measured, and the results showed that corresponding emission intensities are the highest at 0.05 MPa under the conventional condition, and after increasing the nebulizer gas pressure to 0.07 MPa and letting out part of aqueous aerosol, the peak values grew by 38%, 79%, 45% and 70%, respectively. In addition, the stability of the plasma radiation was not affected by the higher nebulizer gas pressure.
Key words:ICP;Nebulizer gas pressure;Plasma radiation;Water sample
陈金忠,哈静,魏艳红,郭庆林,怀素芳. ICP光源中载气压力对等离子体辐射强度的影响[J]. 光谱学与光谱分析, 2006, 26(09): 1707-1709.
CHEN Jin-zhong, HA Jing, WEI Yan-hong, GUO Qing-lin, HUAI Su-fang. Effect of Nebulizer Gas Pressure on the Emission Intensity of ICP . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(09): 1707-1709.
[1] He Zhi Zhuang, Barnes R M. Spectrochim. Acta, 1985, 40B(1/2): 11. [2] Schaldach, G, Berger L, Razilov I. Sperctrchim. Acta, 2002, 57B(10): 1505. [3] Civaldi C J, Vollmer J, Slavin W. Spectrochim. Acta, 1991, 46B(6/7): 1063. [4] Conver T S, Koropckak J A. Sperctrchim. Acta, 1995, 50B(4-7): 341. [5] Ari Vinen, Reijo S, Janne S. Anal. Bioanal. Chem., 2002, 373(3): 93. [6] Mcgeorge S W, Salin E D. Appl. Spectrosc., 1985, 39(6): 989. [7] Cicerone M T, Farnsworth P B. Sperctrchim. Acta, 1989, 44B(9): 897. [8] Lü Jie(吕 杰). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2003,23(4):779. [9] Barnes R M, Schleicher R G. Spectrochim. Acta, 1981, 36B(2): 81. [10] Barnes R M, Genna J L. Spectrochim. Acta, 1981, 36B(4): 299.