A procedure for correcting self-absorption in calibration free-laser induced breakdown spectroscopy

被引：306
|
作者：
Bulajic, D [1 ]
Corsi, M [1 ]
Cristoforetti, G [1 ]
Legnaioli, S [1 ]
Palleschi, V [1 ]
Salvetti, A [1 ]
Tognoni, E [1 ]
机构：
[1] CNR, INFAM, I-56100 Pisa, Italy
来源：
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 2002年 / 57卷 / 02期
关键词：
LEBS; LIPS; self absorption; curve of growth; elemental analysis;
D O I：
10.1016/S0584-8547(01)00398-6
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
A model of the self-absorption effect in laser-induced plasma has been developed, with the aim of providing a tool for its automatic correction in the Calibration-Free algorithm recently developed for standardless analysis of materials by LIBS (Laser Induced Breakdown Spectroscopy). As a test of the model, the algorithm for self-absorption correction is applied to three different certified steel NIST samples and to three ternary alloys (Au, Ag, Cu) of known composition. The experimental results show that the self-absorption corrected Calibration-Free method gives reliable results, improving the precision and the accuracy of the CF-LIBS procedure by approximately one order of magnitude. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：339 / 353
页数：15
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