Determination of Six Organophosphorus Pesticides in Water by Single-Drop Microextraction Coupled with GC-NPD

Tian, Fei; Liu, Weijie; Fang, Hansun; An, Min; Duan, Shunshan

doi:10.1007/s10337-013-2609-1

Cited by 41 publications

(21 citation statements)

References 19 publications

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“…They obtained the recoveries 97% for diazinon, 70.6% -91.2% for parationmethyl sand 86.7% -107.5% for were malation. These results are in compatible with our results (Tian et al, 2014). Canbay et al analyzed pesticide residues in the lake and sediment with GC-ECD and NPD.…”

Section: Accuracysupporting

confidence: 94%

Method Development and Validation for the Determination of Pesticide Residues in Water by GC-NPD

Bayrak¹

2018

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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A multi-residue method was developed for the determination of organophosphorous pesticides and Herbicide by liquid-liquid extraction (LLE) and followed by gas chromatography-nitrogen-phosphorus detector (GC/NPD). The method was evaluated with respect to the limit of detection and quantification, linearity and accuracy (repeatability, reproducibility, recovery). The method is linear over the range 2.5-25 μg L-1 for eleven pesticides and 5-25 μg L-1 for methamidophos. Correlation coefficients were higher or equal to 0.992. The limits of detection (LODs) were between 0.67 and 2.23 μg L-1. The limits of quantification (LOQs) ranged from 2.24 and 7.45 μg L-1. Recoveries of fortified water samples in two different concentration levels with 12 organophosphorous pesticides and herbicide were over 95% in high concentration and 80% in low concentration. For repeatability, relative standard deviation (RSD%) ranged between 2.79 and 10.99%, and for reproducibility (RSD%) ranged between 1.56 and 10.36 %. The developed method is suitable for routine application in water samples in accordance with the validation data and the parameter as the high sample throughput and cost effective.

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Section: Accuracysupporting

confidence: 94%

Method Development and Validation for the Determination of Pesticide Residues in Water by GC-NPD

Bayrak¹

2018

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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“…A lot of methods including GC Tian et al 2014), HPLC (Pirsaheb et al 2013), GC-MS (Chen et al 2009), LC-MS-MS (Ingelse et al 2001), CE (Chen and Fung 2010). and enzyme-linked immunosorbent assay (ELISA) (Garcés-García et al 2006) have been reported for the detection of organophosphorus pesticide residues, and they are summarized in Table 3.…”

Section: Merits Of the Developed Methodsmentioning

confidence: 99%

“…In the past decades, many studies have been reported on the determination of organophosphorus pesticides using methods such as gas chromatography (GC) with flame photometric detection (FPD) or nitrogen-phosphorus detection (NPD) (Tian et al 2014), high-performance liquid chromatography (HPLC) with diode array detection (Pirsaheb et al 2013), gas chromatography-mass spectrometry (GC-MS) (Chen et al 2009) or liquid chromatography-mass spectrometry (Ingelse et al 2001), capillary electrophoresis (CE) (Zhao et al 2014;Chen and Fung 2010), immunoassays (Garcés-García et al 2006), and chemiluminescence methods (Meng et al 2011). Among these methods, GC and HPLC are the classical methods, but their high limits of detection are insufficient for the analysis of trace pesticide residues in samples (Xin et al 2012;Wang et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Determination of Three Trace Organophosphorus Pesticide Residues in Vegetables Using Molecularly Imprinted Solid-Phase Extraction Coupled with High-Performance Liquid Chromatography

Wang

Zhang

et al. 2015

Food Anal. Methods

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In this study, a molecularly imprinted polymer that can selectively recognize dimethoate, isocarbophos, and methyl parathion was synthesized. Using this compound as sorbent, a new method for simultaneous determination of the three organophosphorus pesticides by molecularly imprinted solid-phase extraction coupled with high-performance liquid chromatography was established. The factors affecting the preconcentration and sensitivity were studied in detail. Under optimal conditions, the limits of detection of this method for dimethoate, isocarbophos, and methyl parathion were 19.78, 8.73, and 17.41 μg/kg, respectively. The relative standard deviation for five replicates of 0.01 mg/L-mixed solutions was in the range of 1.8-4.2 %. Cucumber sample spiked with the three organophosphorus pesticides at levels of 0.125 and 0.250 μg/g were examined using this method, good recoveries were obtained ranging from 82.5 to 95.6 %. Moreover, this method was also successfully used for the detection of the three organophosphorus pesticides in cauliflower sample.

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“…One of the most important processes for the organic compounds analysis is sample preparation which is basically designed to achieve sufficient sensitivity by removing the interfering compounds. OPPs are primarily detected using GC and LC and the samples are usually required to undergo extraction and purification (concentration) before the tests. Traditional sample pretreatment methods such as LLE, ultrasonic extraction, shaking extraction, and Soxhlet extraction, however, are unable to meet the rapid, accurate, and environmentally‐friendly process for the separation of the samples since they require large amounts of samples, long extraction time, poor selectivity, and large consumption of organic solvents.…”

Section: Introductionmentioning

confidence: 99%

Preparation and application of chlorpyrifos molecularly imprinted solid‐phase microextraction probes for the residual determination of organophosphorous pesticides in fresh and dry foods

Huang

Wei

2018

J of Separation Science

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A solid-phase microextraction probe was prepared on the surface of a stainless-steel wire through molecular sol-gel imprinting technology using chlorpyrifos as a template molecule, tetraethoxysilane as a sol-gel precursor, and acrylamide and β-cyclodextrin as functional monomers. The polymer was characterized by infrared spectrometry and scanning electron microscopy. Moreover, the selectivity and the parameters including the type and volume of the extraction solvents, ionic strength, pH, temperature, extraction time, stirring speed, and desorption time affecting extraction performance were evaluated. Under the optimum solid-phase microextraction and gas chromatography conditions, the linear ranges were 0.25-25.0 μg/L for chlorpyrifos, quinalphos, triazophos, pirimiphos-methyl, and chlorpyrifos-methyl with the correlation coefficient above 0.99. The detection limits (S/N = 3) were in the range of 0.02-0.07 μg/L and the RSDs were <7.3%. The developed method was successfully used to determine the multi-residues of chlorpyrifos, quinalphos, triazophos, pirimiphos-methyl, and chlorpyrifos-methyl in green peppers and cinnamon with satisfactory recoveries.

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Determination of Six Organophosphorus Pesticides in Water by Single-Drop Microextraction Coupled with GC-NPD

Cited by 41 publications

References 19 publications

Method Development and Validation for the Determination of Pesticide Residues in Water by GC-NPD

Method Development and Validation for the Determination of Pesticide Residues in Water by GC-NPD

Simultaneous Determination of Three Trace Organophosphorus Pesticide Residues in Vegetables Using Molecularly Imprinted Solid-Phase Extraction Coupled with High-Performance Liquid Chromatography

Preparation and application of chlorpyrifos molecularly imprinted solid‐phase microextraction probes for the residual determination of organophosphorous pesticides in fresh and dry foods

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