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Diazinon and ethion in pistachio nuts have been analyzed by use of matrix solid-phase dispersion (MSPD) followed by gas chromatography with nitrogen-phosphorus detection (GC-NPD). The efficiency of different adsorbents (C18, cyano, phenyl, and amino) for MSPD of pistachio nuts was compared. Lanthanum silicate ion-exchanger was used as co-column material. Recoveries for C18-MSPD co-column lanthanum silicate were 95% for ethion and 94% for diazinon with relative standard deviations of 7-13% in the concentration range 0.5-4 mg kg-1. The limits of detection were 0.02 mg kg-1 for ethion and 0.035 mg kg-1 for diazinon; these were lower than the maximum residue limits (MRL) established by WHO/FAO. Thin-layer chromatography was performed on lanthanum silicate and lanthanum tungstate ion exchangers to ensure the pesticide residues were present in the final MSPD extract.
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
208--214
Opis fizyczny
Bibliogr. 11 poz., rys., tab.
Twórcy
autor
- Department of Chemistry, Science and Research Campus, P.O. Box: 14515/775, Islamic Azad University, Tehran, Iran
autor
- Department of Chemistry, Science and Research Campus, P.O. Box: 14515/775, Islamic Azad University, Tehran, Iran
autor
- Instrumental Analysis Laboratory, Plant Paste and Design Research Institute, Ministry of Agriculture Research Organization, Tehran, Iran
autor
- 2Instrumental Analysis Laboratory, Plant Paste and Design Research Institute, Ministry of Agriculture Research Organization, Tehran, Iran
Bibliografia
- [1] E.M. Thurman and M.S. Mills, Solid Phase Extraction, Principles and Practice, Wiley, New York,1998
- [2] S.A. Barker, A.R. Long, and C.R. Short, J. Chromatogr., 475, 363 (1989)
- [3] S.A. Barker, J. Chromatogr. A, 880, 63 (2000)
- [4] S.W. Husain, M.G. Maragheh, and S.H. Rasheedzad, J. Radioanal. Nucl. Chem., 84, 239 (1984)
- [5] M.G. Maragheh, S.W. Husain, A.R. Khanchi, and S.J. Ahmadi, Sep. Sci. Technol., 34, 219 (1999)
- [6] V. Ghoulipour and S.W. Husain, Anal. Sci., 16, 1079 (2000)
- [7] S.W. Husain, M.G. Maragheh, and M. Anbia, J. Appl. Radiat. Isot., 44, 745 (1993)
- [8] S.W. Husain , S.H. Rasheedzad, J.L. Manzoori, and Y. Jabbari, Sep. Sci. Technol., 17, 935 (1982)
- [9] E. Stahl, Thin Layer Chromatography, A Laboratory Handbook, Springer, Berlin, 1969
- [10] J.C. Miller and J.N Miller, Statistics for Analytical Chemistry, Ellis Horwood, Chichester, 1988, pp. 102–115
- [11] Codex Alimentarius Commission (WHO/FAO), Codex maximum Residue Limits for Pesticides, Vol. 2, Rome, 1993
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BAT3-0026-0058