On-line in-syringe sugaring-out liquid-liquid extraction coupled with HPLC-MS/MS for the determination of pesticides in fruit and berry juices

Timofeeva, Irina; Shishov, Andrey; Kanashina, Daria; Makeeva, D. V.; Bulatov, Andrey

doi:10.1016/j.talanta.2017.01.008

Cited by 84 publications

(23 citation statements)

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“…Based on HPLC-UV, HPLC-MS, GC-MS and FTIR, many methods have been developed to detect the pesticide residues in soils [6][7][8][9]. The limits of detection (LODs) and limit of quantification (LOQs) of these methods were commonly at ppb levels (ng/g), which were sensitive and effective for analysing pesticide residues, such as acetamiprid, tebuconazole and difenoconazole [3,[10][11][12][13]. Generally, several kinds of pesticides, such as organophosphorus pesticides [14], organochlorine pesticides [15] and pyrethroids [16], were involved in the processes.…”

Section: Introductionmentioning

confidence: 99%

Detection of Frequently Used Pesticides in Apple Orchard Soil in China by High Resolution Mass Spectrometry

Shi

Chen

et al. 2020

Pol. J. Environ. Stud.

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In this study, 10 frequently used pesticides in apple orchards from the major apple production area of China were identified through 150 questionnaires. Based on Orbitrap high-resolution mass spectrometry, a method for detecting these pesticides in soils was developed. Typically, these compounds can be extracted from dry soil samples using dichloromethane: acetone (2:1, v:v) and purified by dispersive solid-phase extraction (PSA and C18). The qualitative and quantitative analyses can be undertaken by monitoring the MS1 precursor ions under full scan mode within a mass error of <5 ppm (resolution 120000). The recoveries ranged from 68.4% to 102.4% (SD<10.5%), the matrix effects induced signal fluctuation was less than 10%, and the intra-and inter-day precisions were all below 5%. For 14 surface soil samples randomly collected from an apple orchard in China, most pesticides presented the highest detection frequencies (100%), with imidacloprid and tebuconazole showing the highest residue levels (4.1-39.1 and 9.8-350.2 ng/g dry weight, respectively). Compared with previous methods for analyzing individual or several pesticides, the proposed method represents a promising means of investigating these frequently used pesticide residues in apple orchards in China.

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Section: Introductionmentioning

confidence: 99%

Detection of Frequently Used Pesticides in Apple Orchard Soil in China by High Resolution Mass Spectrometry

Shi

Chen

et al. 2020

Pol. J. Environ. Stud.

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“…An important advantage of HLLE is that emulsion formation and loss of extraction solvent on matrix components such as particles are neglectable compared to the relatively large volume of used solvent and even only moderately hydrophobic compounds can be extracted efficiently. In a first work, phase separation of acetonitrile-water was induced by the addition of a concentrated glucose solution that enabled the extraction of pesticides from juices and separation by online-coupled HPLC [44]. In the second work, a switchable solvent (DEHPA) was used that formed a homogenous phase with the sample under alkaline condition (DEHPA ionized).…”

Section: Modes Of Operation and Automated Methodologiesmentioning

confidence: 99%

The Automation Technique Lab-In-Syringe: A Practical Guide

Horstkotte

Solich

2020

Molecules

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About eight years ago, a new automation approach and flow technique called “Lab-In-Syringe” was proposed. It was derived from previous flow techniques, all based on handling reagent and sample solutions in a flow manifold. To date Lab-In-Syringe has evidently gained the interest of researchers in many countries, with new modifications, operation modes, and technical improvements still popping up. It has proven to be a versatile tool for the automation of sample preparation, particularly, liquid-phase microextraction approaches. This article aims to assist newcomers to this technique in system planning and setup by overviewing the different options for configurations, limitations, and feasible operations. This includes syringe orientation, in-syringe stirring modes, in-syringe detection, additional inlets, and addable features. The authors give also a chronological overview of technical milestones and a critical explanation on the potentials and shortcomings of this technique, calculations of characteristics, and tips and tricks on method development. Moreover, a comprehensive overview of the different operation modes of Lab-In-Syringe automated sample pretreatment is given focusing on the technical aspects and challenges of the related operations. We further deal with possibilities on how to fabricate required or useful system components, in particular by 3D printing technology, with over 20 different elements exemplarily shown. Finally, a short discussion on shortcomings and required improvements is given.

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“…For the determination of pesticides, an automated method has been developed by Timofeeva et al (2017).…”

Section: Treatment Strategiesmentioning

confidence: 99%

Pesticides and Herbicides

Choudri

Charabi

Ahmed

2018

Water Environment Research

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On-line in-syringe sugaring-out liquid-liquid extraction coupled with HPLC-MS/MS for the determination of pesticides in fruit and berry juices

Cited by 84 publications

References 50 publications

Detection of Frequently Used Pesticides in Apple Orchard Soil in China by High Resolution Mass Spectrometry

Detection of Frequently Used Pesticides in Apple Orchard Soil in China by High Resolution Mass Spectrometry

The Automation Technique Lab-In-Syringe: A Practical Guide

Pesticides and Herbicides

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