[1] F. Brech and L. Cross, Appl. Spectrosc. 16, 59 (1962).

[2] L. St-Onge, M. Sabsabi, and P. Cielo, Spectrochim. Acta Part B 53, 407 (1998).

[3] M. Hanafi, M. M. Omar, and Y. E. E.-D. Gamal, Radiation Physics and Chemistry 57, 11 (2000).

[4] H. Sun, Z. Xu, T. Jia, X. Li, C. Li, D. Feng, S. Xu, and X. Ge, Chin. Opt. Lett. 3, 60 (2005).

[5] G. Hubmer, R. Kitzberger, and K. Morwald, Anal. Bioanal. Chem. 385, 219 (2006).

[6] M. A. Gondal and T. Hussain, Talanta 71, 73 (2007).

[7] L. Fomarini, F. Colao, R. Fantoni, V. Lazic, and V. Spizzicchino, Spectrochim. Acta Part B 60, 1186 (2005).

[8] P. Yaroshchyk, D. Body, R. J. S. Morrison, and B. L. Chadwick, Spectrochim. Acta Part B 61, 200 (2006).

[9] Z. Cui, X. Zhang, G. Yao, X. Wang, X. Xu, X. Zheng, E. Feng, and X. Ji, Acta Phys. Sin. (in Chinese) 55, 4506 (2006).

[10] Z. Wang and J. Wang, China Science and Technology Information (in Chinese) (9), 21 (2007).

[11] J. Li, C. Lin, and S. Li, Spectroscopy and Spectral Analysis (in Chinese) 26, 944 (2006).

[12] L. Yu, J. Lu, W. Chen, L. Huang, J. Li, and C. Xie, J. Appl. Opt. (in Chinese) 27, 147 (2006).

[13] A. Ciucci, M. Corsi, V. Palleschi, S. Rastelli, A. Salvettl, and E. Tognoni, Appl. Spectrosc. 53, 960 (1999).

[14] L. Yu, J. Lu, W. Chen, G. Wu, K. Shen, and W. Feng, Plasma Science & Technology 7, 3041 (2005).

[15] V. S. Burakov and S. N. Raikov, Spectrochim. Acta Part B 62, 217 (2007).