[1] Tso T C, Sorokin T P, Engelhaupt M E. Plant Physiology, 1973, 51(4): 805.

[3] Adrian A A. Journal of Mass Spectrometry, 2007, 42(4): 419.

[4] Linge K L. Geostandards and Geoanalytical Research, 2008, 32(4): 453.

[7] Ródenas de la Rocha S, Sánchez-Muniz F J, Gómez-Juaristi M, et al. Journal of Food Composition and Analysis, 2009, 22(4): 330.

[11] Niemela M, Peramaki P, Piispanen J, et al. Analytica Chimica Acta, 2004, 52(2): 137.

[12] Nardi E P, Evangelista F S, Tormen L, et al. Food Chemistry, 2009, 112(3): 727.

[13] Araujo G C L, Gonzalez M H, Ferreira A G, et al. Spectrochimica Acta Part B: Atomic Spectroscopy, 2002, 57(12): 2121.

[14] Creed J T, Brockhoff C A, Martin T D. USA EPA Method 2008, Revision 5.4, 1994.

[15] de Souza S S, Santos D, Krug F J, et al. Talanta, 2007, 73(3): 451.