Comparison of simplified methods for pesticide residue analysis

López, Francisco J.; Beltrán, J.; Forcada, M.; Hernández, Félix

doi:10.1016/s0021-9673(98)00393-8

Cited by 34 publications

(2 citation statements)

References 15 publications

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“…In order to enhance the detection sensitivity without any concentration of the solvent by a nitrogen gas stream, as described above, several large-volume injection (LVI) techniques have been proposed 1,2 for a gas chromatography/mass spectrometry (GC/MS). Also, several applications of the LVI techniques for the analysis of pesticides have been reported; [3][4][5][6][7] however, there are few applications to dioxin analysis. [8][9][10][11] The representative LVI methods were a programmable temperature vaporizing (PTV) injection method [12][13][14] and a largevolume on-column injection method.…”

Section: Introductionmentioning

confidence: 99%

Application of a Novel Large-Volume Injection Method Using a Stomach-Shaped Inlet Liner in Capillary Gas Chromatographic Trace Analysis of Dioxins in Human Milk and Plasma

et al. 2007

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A newly developed large-volume injection (LVI) technique that employs a unique stomach-shaped inlet liner (SSIL) inside of a programmable temperature vaporizer was used for the determination of trace amounts of dioxins in human milk and plasma. The initial temperature and the initial dwelling time of the inlet and the kind of solvent used were found to be critical in determining the analytical sensitivity of dioxins due to the loss of these relatively volatile compounds during solvent vaporization. Human milk and plasma were purified and fractionated by pre-packed multi-layered silicagel chromatography and activated carbon silica-gel column chromatography. A 20-μL aliquot of the fraction collected from the chromatography with toluene was directly applied to the LVI system in high-resolution gas chromatography/high-resolution mass spectrometry. Excellent correlation (r > 0.97) between the values obtained by the LVI method using the SSIL device and those by the conventional regular-volume splitless injection method was obtained for PCDDs, PCDFs and non-ortho PCBs in human milk and plasma samples.

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Section: Introductionmentioning

confidence: 99%

Application of a Novel Large-Volume Injection Method Using a Stomach-Shaped Inlet Liner in Capillary Gas Chromatographic Trace Analysis of Dioxins in Human Milk and Plasma

et al. 2007

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“…SPE is widely applied in the analysis of organic compounds because it reduces the consumption of solvents, has fewer stages, avoids emulsions, and is less laborious and more efficient; therefore it is a very suitable technique for automation [6,7]. Due to the separation efficiency, the CGC should be the separation technique and the mass spectrometer, the most appropriate detector [8].…”

Section: Introductionmentioning

confidence: 99%

Ultratraces analysis of organochlorine pesticides in drinking water by solid phase extraction coupled with large volume injection/gas chromatography/mass spectrometry

Brondi

Spoljaric

Lanças

2005

J of Separation Science

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This study describes an SPE coupled with large volume injection (LVI) analytical method for the analysis of organochlorine pesticides, BHC (alpha, beta, delta), aldrin, endosulfan (alpha, beta), endrin, dieldrin, and DDT, from aqueous samples. Determination was carried out by GC with MS. The LODs of organochlorine pesticides were determined at 10 ng/L concentration levels, and the results show that SPE-LVI-GC/MS has the potential to accurately determine organochlorine pesticides in water, as it avoids analyte classes in the various steps of a typical extraction procedure.

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Gas Chromatography and Supercritical Fluid Chromatography with Selective Detection in Pesticide Analysis

Carrasco

Bayona

2000

Encyclopedia of Analytical Chemistry

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Pesticide determination by gas chromatography (GC) and supercritical fluid chromatography (SFC) techniques has been presented in this article. Instrumentation used in the different pesticide class analyses, such as injection (vaporizing, cold injection and large volume) and detection techniques (nitrogen–phosphorus detection, NPD; flame photometric detection, FPD; electron capture detection, ECD), and hyphenated systems (atomic emission detection, AED; mass spectrometry, MS; Fourier transform infrared, FTIR) used in GC and SFC determination of pesticides are presented. The figures of merit of each detection technique are outlined. Instrumental set‐ups which combine extraction and separation techniques are also presented. Stationary phases used in GC and the type of SFC columns used in the determination of pesticides are also reported. Finally, the application of recent GC developments in the determination of pesticides is mentioned.

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Comparison of simplified methods for pesticide residue analysis

Cited by 34 publications

References 15 publications

Application of a Novel Large-Volume Injection Method Using a Stomach-Shaped Inlet Liner in Capillary Gas Chromatographic Trace Analysis of Dioxins in Human Milk and Plasma

Application of a Novel Large-Volume Injection Method Using a Stomach-Shaped Inlet Liner in Capillary Gas Chromatographic Trace Analysis of Dioxins in Human Milk and Plasma

Ultratraces analysis of organochlorine pesticides in drinking water by solid phase extraction coupled with large volume injection/gas chromatography/mass spectrometry

Gas Chromatography and Supercritical Fluid Chromatography with Selective Detection in Pesticide Analysis

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