Spectroscopy and Spectral Analysis, Volume. 32, Issue 5, 1376(2012)
Analytical Figures of Merit of Hildebrand Grid and Ultrasonic Nebulizations in Inductively Coupled Plasma Atomic Emission
Hildebrand grid nebulizer is a kind of improved Babington nebulizer, which can nebulize solutions with high total dissolved solids. And the ultrasonic nebulizer(USN) possesses advantage of high nebulization efficiency and fine droplets. In the present paper, the detection limits, matrix effects, ICP robustness and memory effects of Hildebrand grid and ultrasonic nebulizers for ICP-AES were studied. The results show that the detection limits using USN are improved by a factor of 6~23 in comparison to Hildebrand grid nebulizer for Cu, Pb, Zn, Cr, Cd and Ni. With the USN the matrix effects were heavier, and the degree of intensity enhancement and lowering depends on the element line, the composition and concentrations of matrices. Moreover, matrix effects induced by Ca and Mg are more significant than those caused by Na and Mg, and intensities of ionic lines are affected more easily than those of atomic lines. At the same time, with the USN ICP has less robustness. In addition, memory effect of the USN is also heavier than that of Hildebrand grid nebulizer.
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TIAN Mei, HAN Xiao-yuan, ZHUO Shang-jun, ZHANG Rui-rong. Analytical Figures of Merit of Hildebrand Grid and Ultrasonic Nebulizations in Inductively Coupled Plasma Atomic Emission[J]. Spectroscopy and Spectral Analysis, 2012, 32(5): 1376
Received: Aug. 29, 2011
Accepted: --
Published Online: Jun. 14, 2012
The Author Email: Mei TIAN (tmhxy@sohu.com)