Development of a gas chromatographic method for the determination of Chlorpyrifos and its metabolite Chlorpyrifos-oxon in wine matrix

Pelit, Füsun Okçu; Pelit, Levent; Ertaş, Hasan; Ertaş, F. Nil

doi:10.1016/j.jchromb.2012.07.006

Cited by 20 publications

(8 citation statements)

References 34 publications

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“…where, WR is the amount of boscalid residues in grape samples in mg kg -1 ; CA is the concentration of the boscalid in the sample solution in mg L -1 ; VEnd is the volume of the sample solution in mL; MSample is the sample mass in g; Rec is the recovery [13].…”

Section: Determination Recovery and Uncertaintymentioning

confidence: 99%

The Effects of Pretreatment with Dipping Solution on Variation of Bos-calid Residue in Grape Samples During Drying Process with Natural Sunlight

Cittan¹,

Çelik²,

Dost³

2017

Celal Bayar Üniversitesi Fen Bilimleri Dergisi

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Field experiments were carried out to investigate the variation of boscalid level during the drying period in grape samples that were pretreated and untreated with a dipping solution named POTAS prior to natural sunlight drying. Grape samples were collected at harvest and on the 3 rd , 7 th and 10 th days after harvest (during the drying process of the pretreated and untreated grapes). Initially, 360 different pesticides were scanned qualitatively by GC-MS and LC-MS/MS after QuEChERS (Quick, easy, cheap, effective, rugged and safe) extraction method and only boscalid was observed in grape samples. Consequently, study was concentrated on boscalid extraction and analysis. Boscalid residues were extracted and cleaned up using QuEChERS method. The analysis method shows a good linearity over the concentration range of 0.010-0.125 mg kg-1 with a correlation coefficient value of 0.998. Recoveries of the extraction and the analysis methods ranged from 74.8 to 100.8% within 0.7-1.7 % RSD at three different concentration levels. Detection and quantification limits were 0.77 and 2.55 µg kg-1 , respectively. The uncertainty of the method was calculated as 0.100±0.040 mg kg-1. The results showed that grapes pretreated with the dipping solution prior to drying process showed shorter drying times and higher boscalid degradation rate than those untreated.

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Section: Determination Recovery and Uncertaintymentioning

confidence: 99%

The Effects of Pretreatment with Dipping Solution on Variation of Bos-calid Residue in Grape Samples During Drying Process with Natural Sunlight

Cittan¹,

Çelik²,

Dost³

2017

Celal Bayar Üniversitesi Fen Bilimleri Dergisi

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“…Triplicate injections of impurity H solution (5 g/mL) were investigated to evaluate injection parameters. To optimize the injection parameters, split injection modes with different split ratios (10:1, 5:1, 3:1, 2:1, and 1;1), splitless mode, and pulsed splitless modes with different pulsed pressures (10,15, and 20 psi) were inspected. The comparisons of the average peak response and SD in different injection modes and parameters are summarized in Fig.…”

Section: Optimization Of Injection Parametersmentioning

confidence: 99%

“…The pulsed injection increases the pressure at the GC inlet, and sweeps the vaporized sample solution onto the column with higher velocity and greater amounts. Furthermore, this technique also decreases the thermal degradation of sample at the injector .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of 11 related impurities in propofol by gas chromatography/tandem mass spectrometry coupled with pulsed splitless injection technique

Peng

Jian

Yang

2013

J of Separation Science

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A variety of related impurities, including starting materials, process impurities, and degradation products, can be detected in propofol. In this article, a sensitive and selective GC-MS/MS method using pulsed splitless injection technique for the determination of 11 main related impurities in propofol in one chromatogram is investigated. This method is extensively validated for its linearity, recovery, precision, LOD, and LOQ, and is able to detect trace-level related impurities (LOD = 0.2-5.6 μg/g) in propofol bulk drug. Stressed tests proposed that oxidative degradation, photolytic degradation, and heat are the main causes for the formation of degradation products in propofol.

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“…It is difficult to measure small amounts of pesticides found in natural foods, because foreign ions and matrix effect may interfere with these measurements [1][2][3]. Chromatography is one of the most common methods used for this purpose, but an extraction step is needed prior to the measurement [4][5][6][7][8][9]. Among the extraction techniques used for analysis of pesticides are liquidliquid extraction [10], solid phase extraction [11], QuEChERS method [9] and solid phase microextraction (SPME) [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Direkt Daldırma Katı Faz Mikroekstraksiyon Yöntemi İle Kiraz Örneklerinde Klorpirifos Kalıntılarının Gaz Kromatografisi Kütle Spektrometresinde Tayini

Urucu

Yetimoğlu

DEVECİOĞLU³

2018

Marmara Fen Bilimleri Dergisi

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A method based on a direct immersion solid phase microextraction gas chromatographymass spectrometry (DI-SPME-GC-MS) was developed for the quantitative determination of chlorpyrifos (CRF) residues in cherry samples. The performance of three kinds of commercial fiber coatings: PA (polyacrylate, 85µm), PDMS-DVB (polydimethylsiloxane-divinylbenzene 65 mm) and PDMS (polydimethylsiloxane, 100 mm) were compared. Various parameters affecting SPME procedures such as temperature, extraction and desorption times, salinity, stirring rate were investigated. The analytes from all sample extracts were preconcentrated for 30 minutes in the SPME fiber at 60 °C and then the fiber was desorbed by heating at 250 °C for 10 minutes in the gas chromatography injection port. Limits of detection (LOD) and quantitation (LOQ) values were 0.03 µg/L and 0.1 µg/L, respectively. An average recovery range was 93-98% with relative standard deviation (RSD) < 10 %. ÖzDirekt daldırma katı fazlı mikroekstraksiyon ile kiraz örneklerinde klorpirifos kalıntılarının gaz kromatografisinde tayini (DI-SPME-GC-MS) için bir yöntem geliştirilmiştir. Üç çeşit ticari fiber kaplamanın, PA (poliakrilat, 85 um), PDMS-DVB (polidimetilsiloksan-divinilbenzen 65 mm) ve PDMS (polidimetilsiloksan, 100 mm), performansı karşılaştırıldı. Katı Fazlı Mikroekstraksiyon prosedürlerini etkileyen sıcaklık, ekstraksiyon ve desorpsiyon süreleri, tuzluluk, karıştırma oranı gibi çeşitli parametreler incelendi. Tüm numune ekstraktlarından alınan analitler, 30 dakika boyunca 60 ° C' de SPME fiberine adsorbe edilmiş ve daha sonra fiber, gaz kromatografi enjeksiyon portunda 10 dakika boyunca 250 ° C'de ısıtılarak desorpsiyon sağlanmıştır. Yöntemin tespit sınırı (LOD) ve tayin sınırı (LOQ) değerleri sırasıyla 0,03 µg / L ve 0,1 µg / L dir. Yöntemin ortalama geri kazanım aralığı % 93-98 iken bağıl standart sapma (RSD) <% 10 dur.

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Development of a gas chromatographic method for the determination of Chlorpyrifos and its metabolite Chlorpyrifos-oxon in wine matrix

Cited by 20 publications

References 34 publications

The Effects of Pretreatment with Dipping Solution on Variation of Bos-calid Residue in Grape Samples During Drying Process with Natural Sunlight

The Effects of Pretreatment with Dipping Solution on Variation of Bos-calid Residue in Grape Samples During Drying Process with Natural Sunlight

Simultaneous determination of 11 related impurities in propofol by gas chromatography/tandem mass spectrometry coupled with pulsed splitless injection technique

Direkt Daldırma Katı Faz Mikroekstraksiyon Yöntemi İle Kiraz Örneklerinde Klorpirifos Kalıntılarının Gaz Kromatografisi Kütle Spektrometresinde Tayini

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