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

被引:29
作者
Chen, WQ
Poon, KF
Lam, MHW
机构
[1] City Univ Hong Kong, Dept Biol & Chem, Ctr Environm Sci & Technol, Kowloon, Peoples R China
[2] Xiamen Univ, SEDC Lab Marine Ecol Environm, Xiamen, Peoples R China
[3] Xiamen Univ, Environm Sci Res Ctr, Xiamen, Peoples R China
关键词
D O I
10.1021/es980294c
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
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 mu m 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(r) 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 < 0.05) for the pesticides were found to be 4.73 +/- 0.32 x 10(-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.
引用
收藏
页码:3816 / 3820
页数:5
相关论文
共 31 条
[1]  
[Anonymous], 1996, ANALYST, DOI DOI 10.1039/an9962100929
[2]   SOLID-PHASE MICROEXTRACTION WITH THERMAL-DESORPTION USING FUSED-SILICA OPTICAL FIBERS [J].
ARTHUR, CL ;
PAWLISZYN, J .
ANALYTICAL CHEMISTRY, 1990, 62 (19) :2145-2148
[3]   ANALYSIS OF SUBSTITUTED BENZENE COMPOUNDS IN GROUNDWATER USING SOLID-PHASE MICROEXTRACTION [J].
ARTHUR, CL ;
KILLAM, LM ;
MOTLAGH, S ;
LIM, M ;
POTTER, DW ;
PAWLISZYN, J .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1992, 26 (05) :979-983
[4]   AUTOMATION AND OPTIMIZATION OF SOLID-PHASE MICROEXTRACTION [J].
ARTHUR, CL ;
KILLAM, LM ;
BUCHHOLZ, KD ;
PAWLISZYN, J ;
BERG, JR .
ANALYTICAL CHEMISTRY, 1992, 64 (17) :1960-1966
[5]   DETERMINATION OF ORGANOPHOSPHORUS COMPOUNDS IN MEDITERRANEAN COASTAL WATERS AND BIOTA SAMPLES USING GAS-CHROMATOGRAPHY WITH NITROGEN-PHOSPHORUS AND CHEMICAL IONIZATION MASS-SPECTROMETRIC DETECTION [J].
BARCELO, D ;
PORTE, C ;
CID, J ;
ALBAIGES, J .
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY, 1990, 38 (02) :199-209
[7]   DETERMINATION OF NONVOLATILE ORGANIC-COMPOUNDS IN AQUEOUS ENVIRONMENTAL-SAMPLES USING LIQUID CHROMATOGRAPHY/MASS SPECTROMETRY [J].
BELLAR, TA ;
BUDDE, WL .
ANALYTICAL CHEMISTRY, 1988, 60 (19) :2076-2083
[8]   DETERMINATION OF PHENOLS BY SOLID-PHASE MICROEXTRACTION AND GAS-CHROMATOGRAPHIC ANALYSIS [J].
BUCHHOLZ, KD ;
PAWLISZYN, J .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1993, 27 (13) :2844-2848
[9]   SOLID-PHASE MICROEXTRACTION COUPLED TO HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY [J].
CHEN, J ;
PAWLISZYN, JB .
ANALYTICAL CHEMISTRY, 1995, 67 (15) :2530-2533
[10]   THE DISTRIBUTION OF ORGANIC COMPOUNDS BETWEEN ISO-BUTANOL AND WATER [J].
COLLANDER, R .
ACTA CHEMICA SCANDINAVICA, 1950, 4 (07) :1085-1098