Microwave-assisted extraction at atmospheric pressure coupled to different clean-up methods for the determination of organophosphorus pesticides in olive and avocado oil

Fuentes, Edwar; Báez, María E.; Díaz, Juan

doi:10.1016/j.chroma.2009.10.082

Cited by 34 publications

(21 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the contrary, mainly coupled to 1D-GC and with lower data acquisition rates (20)(21)(22)(23)(24)(25) and a narrower dynamic range, highresolution (HR) TOF MS provides sensitive full spectrum data with high mass accuracy, allowing the resolution of peaks from closely related interfering matrix components. In the last years, many papers can be found dealing with the determination of pesticides in food and environmental samples by GC × GC-(HS) TOF MS 3,4 but much less related with GC (HR) TOF MS. 5,6 The most important limitation of TOF MS is related to its low sensitivity which can make it troublesome to reach the required limits of detection (LOD) and, in the case of the HR TOF, also the peak saturation problems that occur in short dynamic ranges.…”

Section: Introductionmentioning

confidence: 99%

The role of GC-MS/MS with triple quadrupole in pesticide residue analysis in food and the environment

et al. 2013

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

The role of GC-MS/MS with triple quadrupole in pesticide residue analysis in food and the environment

et al. 2013

View full text Add to dashboard Cite

“…Conventionally, organic solvents such as acetone and dichloromethane were used to extract organo‐analytes from soil or fruits prior to residual determination . In the study, water miscible solvents such as methanol, acetonitrile, and acetone were selected as the organic modifiers to enhance the MAE efficiency from soil sample to aqueous extraction solution.…”

Section: Resultsmentioning

confidence: 99%

“…The use of organophosphorus pesticides (OPPs) has been increasing in the past decades since the ban of organochlorine pesticides due to their toxicity, persistence, and bioaccumulation in the environment . However, OPPs are incredibly toxic to all animals and humans and have also been banned by many Western countries; but they are still used widely in developing countries.…”

Section: Introductionmentioning

confidence: 99%

Novel solvent-free microwave-assisted extraction coupled with low-density solvent-based in-tube ultrasound-assisted emulsification microextraction for the fast analysis of organophosphorus pesticides in soils

Yan

Ponnusamy

et al. 2013

J. Sep. Science

View full text Add to dashboard Cite

A novel and rapid solventless microwave-assisted extraction coupled with low-density solvent-based in-tube ultrasound-assisted emulsification microextraction has been developed for the efficient determination of nine organophosphorus pesticides in soils by GC analysis with microelectron capture detection. A specially designed, homemade glass tube inbuilt with a scaled capillary tube was used as an extraction device to collect and measure the separated extractant phase easily. Parameters affecting the efficiencies of the developed method were thoroughly investigated. From experimental results, the following conditions were selected for the extraction of organophosphorus pesticides from 1.0 g of soil sample to 5 mL of aqueous solution under 226 W of microwave irradiation for 2.5 min followed by ultrasound-assisted emulsification microextraction with 20 μL toluene for 30 s and then centrifugation at 3200 rpm for 3 min. Detections were linear in the range of 0.25-10 ng/g with detection limits between 0.04 and 0.13 ng/g for all target analytes. The applicability of the method to real samples was assessed on agricultural contaminated soils and the recoveries ranged between 91.4 and 101.3%. Compared to other methods, the present method was shown to be highly competitive in terms of sensitivity, cost, eco-friendly nature, and analysis speed.

show abstract

“…To remove lipids compound from extraction, a set of methods have been developed, including low-temperature precipitation (freezing-out) [7,8], GPC [9,10], SPE [11,12], and dispersive solid-phase extraction (d-SPE) [13][14][15]. In the last decade, the QuEChERS method was introduced and successfully applied for the extraction of pesticides from tobacco [16,17], cereals [18], eggs [19], fruits [20,21] and vegetables [22].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of 106 pesticides in nuts by LC–MS/MS using freeze‐out combined with dispersive solid‐phase extraction purification

Wang

Gong

Zhang

et al. 2017

J of Separation Science

View full text Add to dashboard Cite

As a result of the low water content and high fat matrices in nuts, it is very difficult to simultaneously determine multi-pesticides in trace levels. Here, a sample pretreatment method was developed in which, microwave-assisted solvent extraction was firstly used to extract pesticides, and then a two-step cleanup method was conducted combining freeze-out with dispersive solid-phase extraction to remove the lipidic matrix. By this way, 106 pesticides were simultaneously determined in the complicated nut sample by using an ultra-high pressure liquid chromatography coupled with a tandem mass spectrometer. Average recoveries were 75.3-119.3% with relative standard deviations < 14% at three concentration levels. The limits of detection and quantification were in the ranges of 0.3-3.0 and 1.0-10.0 μg/kg, respectively. Furthermore, the method was successfully applied to the determination of pesticides in 180 commercial nut samples.

show abstract

Microwave-assisted extraction at atmospheric pressure coupled to different clean-up methods for the determination of organophosphorus pesticides in olive and avocado oil

Cited by 34 publications

References 27 publications

The role of GC-MS/MS with triple quadrupole in pesticide residue analysis in food and the environment

The role of GC-MS/MS with triple quadrupole in pesticide residue analysis in food and the environment

Novel solvent-free microwave-assisted extraction coupled with low-density solvent-based in-tube ultrasound-assisted emulsification microextraction for the fast analysis of organophosphorus pesticides in soils

Simultaneous determination of 106 pesticides in nuts by LC–MS/MS using freeze‐out combined with dispersive solid‐phase extraction purification

Contact Info

Product

Resources

About