A liquid chromatography mass spectrometry-based method to measure organophosphorous insecticide, herbicide and non-organophosphorous pesticide in grape and apple samples

Sinha, Sukesh Narayan; Rao, M. Vishnu Vardhana; Vasudev, K.; Odetokun, Martins

doi:10.1016/j.foodcont.2011.11.031

Cited by 31 publications

(9 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, these residues have been detected in apple samples from other countries. 26,27) Flufenoxuron and penconazole were also detected in PDO/PGI olive oils in our previous investigation. 4) The existence of flufenoxuron in both apples and olive oil is of interest because it was banned in the European Union in 2011 due to its high potential for bioaccumulation.…”

Section: Occurrence and Levels Of Target Pesticides In Greek Pdo/pgisupporting

confidence: 52%

Pesticide residues in Greek apples with protected geographical indication or designation of origin

Likudis

Costarelli

Vitoratos³

et al. 2014

J. Pestic. Sci.

View full text Add to dashboard Cite

Eighty apple samples with protected geographical indication (PGI) or designation of origin (PDO) were analyzed for 51 target pesticides using the "quick, easy, cheap, effective, rugged and safe" (QuEChERS) method. Accuracy and precision were evaluated by means of recovery experiments at four concentration levels (10-250 µg/kg). Twelve pesticide residues were detected in 75 positive samples with an average number of detected pesticides per sample equal to 6.0. The highest detection rates were observed for chlorpyrifos (n=75), quinalphos (n=75) and parathion (n=73). Only 2 of the 80 investigated samples contained pesticide residues (parathionmethyl) in levels exceeding the maximum residue limits (MRLs). According to Spearman correlation analysis, the most powerful correlations were obtained between α-endosulfan and β-endosulfan (r=0.823) and between flufenoxuron and penconazole (r=0.683). Principal component analysis revealed similarities in the pesticides levels of all PDO/PGI samples, while the kind of product also significantly impacts its residue content.

show abstract

Section: Occurrence and Levels Of Target Pesticides In Greek Pdo/pgisupporting

confidence: 52%

Pesticide residues in Greek apples with protected geographical indication or designation of origin

Likudis

Costarelli

Vitoratos³

et al. 2014

J. Pestic. Sci.

View full text Add to dashboard Cite

show abstract

“…Pesticides are usually analyzed by liquid chromatography combined with mass spectrometry (Bargańska and others ; Sinha and others ), but they may also be analyzed by gas chromatography (GC) coupled to mass spectrometry (MS) or electron capture detection (ECD; Balinova and others ; Furlani and others ). Published quantitative MS applications have included the use of a single quadrupole or ion trap analyzer operating in selected ion‐monitoring (SIM) mode (Chen and others ; Cunha and Fernandes ; Abdulra'uf and Tan ), and more selective techniques, such as tandem mass spectrometry (MS/MS) with the use of an ion trap or triple quadrupole, with selected reaction monitoring (SRM) to improve both selectivity and sensitivity (Fillâtre and others ; Martins and others ; Chertaa and others ).…”

Section: Introductionmentioning

confidence: 99%

Matrix‐Matching as an Improvement Strategy for the Detection of Pesticide Residues

Giacinti

Raynaud

Capblancq

et al. 2016

Journal of Food Science

View full text Add to dashboard Cite

More than 90% of the pesticides residues in apples are located in the peel. We developed a gas chromatography/ion trap tandem mass spectrometry method for investigating all detectable residues in the peel of 3 apple varieties. Sample preparation is based on the use of the Quick Easy Cheap Effective Rugged and Safe method on the whole fruit, the flesh, and the peel. Pesticide residues were quantified with solvent-matched and matrix-matched standards, by spiking apple sample extracts. Matrix effects dependent on the type of extract (fruit, flesh, or peel) and the apple variety were detected. The best data processing methods involved normalizing matrix effect rates by matrix-matched internal/external calibration. Boscalid, captan, chlorpyrifos, fludioxonil, and pyraclostrobin were the most frequently detected pesticides. However, their concentrations in the whole fruit were below European maximum residue levels. Despite negative matrix effects, the residues in peel were detected at concentrations up to 10 times higher than those in whole fruits. Consequently, other pesticide residues present at concentrations below the limit of quantification in the whole fruit were detected in the peel.

show abstract

“…Pesticides are xenobiotic, toxic and non-biodegradable and can cause serious problems to human health and environment [4]- [6]. Herbicides constitute the principal class of pesticides especially used in agriculture to protect the crops plant against weeds.…”

Section: Introductionmentioning

confidence: 99%

Investigations on the Degradation of Triazine Herbicides in Water by Photo-Fenton Process

Dbira¹,

Boutarfaïa²,

Bensalah³

2014

AJAC

View full text Add to dashboard Cite

In this work, the degradation of 2-chloro-4,6-diamino-1,3,5-triazine in aqueous solutions by photo-Fenton process has been investigated. The preliminary results have shown that the degradation of 2-chloro-4,6-diamino-1,3,5-triazine by photo-Fenton process is more rapid and more effective than Fenton and UV/H2O2 processes. The effects of certain experimental parameters on kinetics and efficiency of the degradation of 2-chloro-4,6,-diamino-1,3,5-triazine by photo-Fenton process, have been evaluated. Under optimal conditions, photo-Fenton process achieved more than 90% of chloride release and about 30% of nitrate formation. The results of total organic carbon (TOC) and total Kjeldahl nitrogen (TKN) analyses have shown that no carbon dioxide and ammonia are formed during photo-Fenton treatment of aqueous solutions containing 40 mg/L triazine. These results indicate that only substituent groups of triazine ring are released; however, nitrogen atoms of triazine ring remain unaffected. A simple mechanism of degradation of 2-chloro-4,6-diamino-1,3,5-triazine has been proposed. The degradation starts by a rapid release of chlorine atoms as chloride ions to form 2-hydroxy-4,6-diamino-1,3,5-triazine. The amino groups of 2-hydroxy-4,6-diamino-1,3,5-triazine undergo are oxidized into nitro groups by hydroxyl radicals to form 2-hydroxy-4,6-dinitro-1,3,5-triazine which undergoes a slow release of nitro groups and their substitution with hydroxyl groups to form cyanuric acid and nitrate ions. The degradation of cyanuric acid by photo-Fenton process has also been investigated. The results of TOC and TKN analyzes show that no carbon dioxide is formed during the treatment.

show abstract

A liquid chromatography mass spectrometry-based method to measure organophosphorous insecticide, herbicide and non-organophosphorous pesticide in grape and apple samples

Cited by 31 publications

References 29 publications

Pesticide residues in Greek apples with protected geographical indication or designation of origin

Pesticide residues in Greek apples with protected geographical indication or designation of origin

Matrix‐Matching as an Improvement Strategy for the Detection of Pesticide Residues

Investigations on the Degradation of Triazine Herbicides in Water by Photo-Fenton Process

Contact Info

Product

Resources

About