The application of solid phase microextraction in the analysis of organophosphorus pesticides in a food plant

Weiqi Chen; K.A.-Fai Poon; Michael H. W. Lam

doi:10.1021/es980294c

Author(s)

Weiqi Chen
K.A.-Fai Poon
Michael H. W. Lam

Detail(s)

Original language	English
Pages (from-to)	3816-3820
Journal / Publication	Environmental Science and Technology
Volume	32
Issue number	23
Publication status	Published - 1 Dec 1998

Link(s)

DOI	DOI https://doi.org/10.1021/es980294c Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-0032401664&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(8f4d7da8-3bf4-4aec-ad90-6213fa236f58).html

Abstract

A SPME method for the determination of organophosphorus pesticide residues in a local food plant, Chrysanthemum coronarium, was established. Pesticide residues were extracted by SPME fiber (with 100 μm poly(dimethylsiloxane) coating) from a biphasic water/plant tissues mixture and determined by GC-FPD. An equilibrium model was derived for the system and revealed that pesticide recoveries were related to the water:plant tissues ratio, f, and the partition coefficient, K(WV), for the distribution of pesticides between the aqueous phase and the plant tissues. The model was verified by four organophosphorus pesticides, namely phorate, diazinon, methyl parathion, and ethion. The best fitted K(WV) values (P-2 (phorate); 1.11 ± 0.10 x 10^-1 (diazinon); 9.18 ± 0.95 x 10^-2 (methyl parathion); and 8.21 ± 1.28 x 10^-3 (ethion). Remarkable correlation between the K(WV) of the organophosphorus pesticides and their octanol/water partition coefficients, K(OW), was also established.

Citation Format(s)

[ RIS ] [ BibTeX ]

The application of solid phase microextraction in the analysis of organophosphorus pesticides in a food plant. / Chen, Weiqi; Poon, K.A.-Fai; Lam, Michael H. W.
In: Environmental Science and Technology, Vol. 32, No. 23, 01.12.1998, p. 3816-3820.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Chen, W, Poon, KA-F & Lam, MHW 1998, 'The application of solid phase microextraction in the analysis of organophosphorus pesticides in a food plant', Environmental Science and Technology, vol. 32, no. 23, pp. 3816-3820. https://doi.org/10.1021/es980294c

Chen, W., Poon, KA. .-F., & Lam, M. H. W. (1998). The application of solid phase microextraction in the analysis of organophosphorus pesticides in a food plant. Environmental Science and Technology, 32(23), 3816-3820. https://doi.org/10.1021/es980294c

Chen W, Poon KAF, Lam MHW. The application of solid phase microextraction in the analysis of organophosphorus pesticides in a food plant. Environmental Science and Technology. 1998 Dec 1;32(23):3816-3820. doi: 10.1021/es980294c

Chen, Weiqi ; Poon, K.A.-Fai ; Lam, Michael H. W. / The application of solid phase microextraction in the analysis of organophosphorus pesticides in a food plant. In: Environmental Science and Technology. 1998 ; Vol. 32, No. 23. pp. 3816-3820.