Study on the feasibility of coupling large‐volume injection to fast gas chromatography with mass spectrometric detection for analysis of organochlorine pesticides

Korenková, Eva; Matisová, Eva; Slobodnı́k, Jaroslav

doi:10.1002/jssc.200301269

Cited by 20 publications

(7 citation statements)

References 6 publications

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“…The use of other solvents, such as ethyl acetate or acetone as extractants, has been tested (Lehotay et al 2010;Cunha et al 2007), but MeCN still remains as the priority solvent for the 4 QuEChERS procedure. The combination of MeCN as extractant combined with PTV injection has allowed reaching low limits of determination when combined with fast GC techniques (Hada et al 2000;Hercegová et al 2005;Korenková et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Application of Fast Gas Chromatography–Mass Spectrometry in Combination with the QuEChERS Method for the Determination of Pesticide Residues in Fruits and Vegetables

et al. 2012

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Section: Introductionmentioning

confidence: 99%

Application of Fast Gas Chromatography–Mass Spectrometry in Combination with the QuEChERS Method for the Determination of Pesticide Residues in Fruits and Vegetables

et al. 2012

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“…These substances are used in various steps of cultivation to protect the products quality. Pesticides according to their structure and functional groups are classified to several groups including organochlorine [2], Article Related Abbreviations: DES, deep eutectic solvent; DLLME, dispersive liquid-liquid microextraction; ECF, ethyl chloroformate; EF, enrichment factor; ER, extraction recovery; PSA, primary secondary amine; SBSE, stir bar sorptive extraction; SFO, solidification of floating organic. organophosphorous [3], triazole [4], triazine [5], and acidic pesticides (APs) [6].…”

Section: Introductionmentioning

confidence: 99%

“…These substances are used in various steps of cultivation to protect the products quality. Pesticides according to their structure and functional groups are classified to several groups including organochlorine , organophosphorous , triazole , triazine , and acidic pesticides (APs) . APs are mainly applied to control wide range of weeds and fungal pathogens in agriculture.…”

Section: Introductionmentioning

confidence: 99%

Development of a stir bar sorptive extraction method coupled to solidification of floating droplets dispersive liquid–liquid microextraction based on deep eutectic solvents for the extraction of acidic pesticides from tomato samples

Nemati

Farajzadeh

Mohebbi

et al. 2020

J of Separation Science

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A stir bar sorptive extraction method coupled with deep eutectic solvent based solidification of floating organic droplets–dispersive liquid–liquid microextraction has been used for the simultaneous derivatization and extraction of some acidic pesticides in tomato samples. In this method, initially the analytes are adsorbed on a coated stir bar from tomato juice filled in a narrow tube. After extraction, the stir bar is removed and a water–miscible deep eutectic solvent is used to elute the analytes. Afterward, a derivatization agent and a water–immiscible deep eutectic solvent (as an extraction solvent) with melting point near to room temperature are added to the obtained eluant at µL–levels and the obtained mixture is rapidly injected into deionized water. Under the optimum conditions, the introduced method indicated high enhancement (1543–3353) and enrichment (2530–2999) factors, low limits of detection (7–14 ng/L) and quantification (23–47 ng/L), good linearity (r2 ≥ 0.9982), and satisfactory repeatabilities (relative standard deviation ≤12% for intra– and inter–day precisions at a concentration of 100 ng/L of each analyte). Finally, the proposed method was applied in analysis of the analytes in tomato samples.

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“…Injection volumes searched up to 8 lL do not provide any peak distortion. However, PTV injector provides the best protection against effects of coextracted components [6], and operating in solvent vent mode allows even larger sample volume introduction resulting in excellent LOQs [10,11].…”

Section: Introductionmentioning

confidence: 99%

Possibilities and limitations of fast GC with narrow‐bore columns

Dömötörová

Kirchner

Matisová³

et al. 2006

J of Separation Science

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In this work, two narrow-bore capillary columns with different internal diameters (I.D.) 0.15 mm (15 m length, 0.15 microm film thickness) and 0.10 mm (10 m length, 0.10 microm film thickness) with the same stationary phase (5% diphenyl 95% dimethylsiloxane), phase ratio and separation power were compared with regard to their advantages, practical limitations and applicability in fast GC on commercially available instrumentation. The column comparison concerns fast GC method development, speed and separation efficiency, the sample transfer into the column utilizing split and splitless inlet, sample capacity, detection (analysing compounds of a wide range of polarities and volatilities--even n-alkanes C16-C28 and selected pesticides) and ruggedness (in the field of ultratrace analysis of pesticide residues in real matrix). Under conditions corresponding to speed/separation efficiency trade-off 0.10 mm I.D. versus 0.15 mm I.D. column provides a speed gain of 1.74, but all other parameters investigated were better for the 0.15 mm I.D. column concerning more efficient sample transfer from inlet to the column using splitless injection, no discrimination with split injection. Better sample capacity (three times higher for the 0.15 mm than for the 0.10 mm I.D. column) resulted in improved ruggedness and simpler fast GC-MS method development.

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Study on the feasibility of coupling large‐volume injection to fast gas chromatography with mass spectrometric detection for analysis of organochlorine pesticides

Cited by 20 publications

References 6 publications

Application of Fast Gas Chromatography–Mass Spectrometry in Combination with the QuEChERS Method for the Determination of Pesticide Residues in Fruits and Vegetables

Application of Fast Gas Chromatography–Mass Spectrometry in Combination with the QuEChERS Method for the Determination of Pesticide Residues in Fruits and Vegetables

Development of a stir bar sorptive extraction method coupled to solidification of floating droplets dispersive liquid–liquid microextraction based on deep eutectic solvents for the extraction of acidic pesticides from tomato samples

Possibilities and limitations of fast GC with narrow‐bore columns

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