Determination of organophosphorus pesticides in water by solid-phase microextraction.

A solid-phase microextraction method coupled with a flame photometric detector was developed for the analysis of organophosphorus pesticides in water. Two kinds of fiber (100 mum polydimethyl siloxane (PDMS) and 85 mum polyacrylate (PA) fibers) were used and compared. Parameters that may affect the extraction, such as the duration of absorption and desorption, temperature of absorption, ionic strength, elutropic strength, and concentration of humic acid were investigated. Higher sensitivity and lower detection limits were achieved using a PA fiber than using a PDMS fiber. The detection limit is less than 0.3 mug l(-1) for most of the analytes, except for mevinphos (420 mug l(-1)). The precision is better than 9%.

[1]  Janusz Pawliszyn,et al.  Headspace solid-phase microextraction , 1993 .

[2]  V. Lopez-Avila,et al.  On‐line determination of organophosphorus pesticides in water by solid‐phase microextraction and gas chromatography with thermionic‐selective detection , 1997 .

[3]  J. Pawliszyn,et al.  Analysis of organic compounds in environmental samples by headspace solid phase microextraction , 1993 .

[4]  T. Kumazawa,et al.  Detection of organophosphate pesticides in human body fluids by headspace solid-phase microextraction (SPME) and capillary gas chromatography with nitrogen-phosphorus detection , 1996 .

[5]  Janusz Pawliszyn,et al.  Quantitative Extraction Using an Internally Cooled Solid Phase Microextraction Device , 1995 .

[6]  G. Font,et al.  Matrix effects on solid-phase microextraction of organophosphorus pesticides from water , 1997 .

[7]  J. Pawliszyn,et al.  Automated In-Tube Solid-Phase Microextraction Coupled to High-Performance Liquid Chromatography , 1997 .

[8]  J. Pawliszyn,et al.  Solid phase microextraction with thermal desorption using fused silica optical fibers , 1990 .

[9]  J. Pawliszyn,et al.  Dynamics of organic compound extraction from water using liquid-coated fused silica fibers , 1992 .

[10]  K. Levsen,et al.  Element-selective detection of pesticides by gas chromatography—atomic emission detection and solid-phase microextraction , 1994 .

[11]  J. Pawliszyn,et al.  Determination of phenols by solid-phase microextraction and gas chromatographic analysis , 1993 .

[12]  T. Bellar,et al.  Determination of nonvolatile organic compounds in aqueous environmental samples using liquid chromatography/mass spectrometry , 1988 .

[13]  J. Pawliszyn,et al.  Solid Phase Microextraction Coupled to High-Performance Liquid Chromatography , 1995 .

[14]  J. Pawliszyn,et al.  Pesticides by solid-phase microextraction. Results of a round robin test , 1996 .

[15]  Yu-Hsiang Sung,et al.  Determination of benzene derivatives in water by solid-phase microextraction , 1997 .

[16]  J. Pawliszyn,et al.  Detection of substituted benzenes in water at the pg/ml level using solid-phase microextraction and gas chromatography-ion trap mass spectrometry. , 1992, Journal of chromatography.

[17]  M. Montury,et al.  Influence of Ethanol on Pesticide Extraction in Aqueous Solutions by Solid-Phase Microextraction , 1996 .

[18]  Shang-da Huang,et al.  Determination of the semi-volatile compounds nitrobenzene, isophorone, 2,4-dinitrotoluene and 2,6-dinitrotoluene in water using solid-phase microextraction with a polydimethylsiloxane- coated fibre , 1994 .

[19]  J. Pawliszyn,et al.  Analysis of organochlorine pesticides using solid-phase microextraction. , 1996, Journal of chromatography. A.

[20]  H. Lakso,et al.  Solid-phase microextraction of organophosphorus pesticides from water. , 1997, Journal of chromatography. A.

[21]  C. Marvin,et al.  Development of an automated high-performance liquid chromatographic method for the on-line pre-concentration and determination of trace concentrations of pesticides in drinking water. , 1990, Journal of chromatography.

[22]  J. Pawliszyn,et al.  Optimization of solid-phase microextraction conditions for determination of phenols , 1994 .

[23]  D. Barceló,et al.  Determination of Organophosphorus Compounds in Mediterranean Coastal Waters and Biota Samples Using Gas Chromatography with Nitrogen-Phosphorus and Chemical Ionization Mass Spectrometric Detection , 1990 .

[24]  J. Pawliszyn,et al.  New Trends in Solid-Phase Microextraction , 1997 .

[25]  J. Pawliszyn,et al.  Rapid determination of polyaromatic hydrocarbons and polychlorinated biphenyls in water using solid-phase microextraction and GC/MS. , 1994, Environmental science & technology.

[26]  J. Pawliszyn,et al.  Analysis of pesticides in environmental water samples by solid-phase micro-extraction-high-performance liquid chromatography. , 1996, Journal of chromatography. A.

[27]  J. Pawliszyn,et al.  Solid-phase microextraction coupled with high-performance liquid chromatography for the determination of alkylphenol ethoxylate surfactants in water. , 1996, Analytical chemistry.

[28]  K. Levsen,et al.  Determination of organophosphorus, triazine and 2,6-dinitroaniline pesticides in aqueous samples via solid-phase microextraction (SPME) and gas chromatography with nitrogen-phosphorus detection , 1995 .

[29]  M. Moran,et al.  Sensitive method for the determination of organophosphorus pesticides in fruits and surface waters by high-performance liquid chromatography with ultraviolet detection , 1992 .

[30]  Shang-da Huang,et al.  Determination of haloethers in water by solid-phase microextraction , 1997 .

[31]  Janusz Pawliszyn,et al.  Automation and optimization of solid-phase microextraction , 1992 .

[32]  T. K. Choudhury,et al.  Solid-Phase Microextraction of Nitrogen- and Phosphorus-Containing Pesticides from Water and Gas Chromatographic Analysis , 1996 .

[33]  J. Pawliszyn,et al.  Simultaneous determination of 60 pesticides in water using solid-phase microextraction and gas chromatography–mass spectrometry , 1996 .