Single Drop Microextraction: a Sensitive Multiresidue Method for Determination of Pesticides in Water Using GC/ECD

Soares, Carlos E. S.; Neves, Antônio Augusto; Queiroz, Maria Eliana Lopes Ribeiro de; Oliveira, André Fernando; Costa, Anderson Gomide; Assis, Roberta C.; Andrade, Carlos Eduardo O.

doi:10.5935/0103-5053.20140186

Cited by 3 publications

(7 citation statements)

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“…The analyte extraction was not significantly affected by the type of extraction solvent (n-hexane or toluene) (Soares et al 2014). n-Hexane was suitable for the extraction of OCPs and pyrethroids from drinking water (Carlos et al 2013), multiclass pesticides from water and soil (Soares et al 2014;Soares et al 2015). For the extraction of the atrazine, desethyl-atrazine, desisopropyl-atrazine from the water samples, toluene, n-hexane, and cyclohexane were investigated, however, due to their low viscosity and density, the microdrop was not stable.…”

Section: Environmental Samplesmentioning

confidence: 99%

“…Overview of the applicability of SDME for environmental sample analysis is shown in the Table 2. SDME was an appropriate extraction technique for liquid samples such as tap water (Kaykhaii et al 2005;Lamboropoulou et al 2007;Yohannes et al 2016), river water (Kaykhaii et al 2005;Saraji and Bankhshi 2005;Ahmadi et al 2006;De Souza Pinheiro et al 2009;De Souza Pinheiro et al 2011;Soares et al 2014;Amde et al 2015;Yohannes et al 2016), lake water (Wu et al 2008;Xie et al 2014;Amde et al 2015;Yohannes et al 2016), surface water (Lopez-Blanco et al 2003;Lamboropoulou et al 2007;Santos et al 2017), drinking water (Lopez-Blanco et al 2003;Ahmadi et al 2006;Carlos et al 2013), effluent and influent water (Amde et al 2015), ground water (Yohannes et al 2016;Santos et al 2017), water from the farm (Ahmadi et al 2006), sea water (Tian et al 2014) and other water samples (Przyjazny and Kokosa 2002). Furthermore, SDME was applied for the extraction of the pesticides from the soil samples (Salemi et al 2013;Williams et al 2014;Soares et al 2015).…”

Section: Environmental Samplesmentioning

confidence: 99%

“…The similar observation was reported for n-hexane that was selected due to its lower solubility in water, which increases the stability of the microdrop in comparison to the use of toluene. The analyte extraction was not significantly affected by the type of extraction solvent (n-hexane or toluene) (Soares et al 2014). n-Hexane was suitable for the extraction of OCPs and pyrethroids from drinking water (Carlos et al 2013), multiclass pesticides from water and soil (Soares et al 2014;Soares et al 2015).…”

Section: Environmental Samplesmentioning

confidence: 99%

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Present state and applications of single drop microextraction for the determination of harmful organic compounds and pollutants

Zichová¹,

Brisudová²,

Hrouzková³

2018

Nova Biotechnologica Et Chimica

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Single drop microextraction (SDME) nowadays earns an increasing attention by scientists due to its simplicity, low cost and the need for only common laboratory equipment. This microextraction technique combines sample cleanup and pre-concentration of analytes in one step. Furthermore, a significant reduction in the amount of organic solvents needed comparing to standard LLE techniques places SDME into the position of environmental friendly extraction techniques. SDME is a straightforward technique in which a micro-drop of solvent is suspended from the tip of a conventional micro-syringe and then it is in a direct contact with a sample solution in which it is immiscible or it could be suspended in the headspace above the sample. The paper overviews developments of the state-of-the-art SDME techniques for the extraction of harmful organic compound and pollutants from environmental, food and biological matrices. Key extraction parameters essential for SDME performance were described and discussed.

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Section: Environmental Samplesmentioning

confidence: 99%

Section: Environmental Samplesmentioning

confidence: 99%

Section: Environmental Samplesmentioning

confidence: 99%

See 1 more Smart Citation

Present state and applications of single drop microextraction for the determination of harmful organic compounds and pollutants

Zichová¹,

Brisudová²,

Hrouzková³

2018

Nova Biotechnologica Et Chimica

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“…Eclética Química Journal, 43, special number, 2018, [11][12][13][14][15][16][17][18][19][20][21] ISSN: 1678-4618 DOI: 10.26850/1678-4618eqj.v43.1SI.2018.p11-21 organoleptic, physical and chemical characteristics 7 .…”

mentioning

confidence: 99%

“…Several studies in the literature reported the determination of pesticide residues in water using the techniques of sample preparation solidphase extraction -SPE 11 ; solid-phase microextraction -SPME 1,12 ; liquid-liquid extraction with low temperature partitioning -LLE-LTP 13,14 ; liquid phase microextraction -LPME 15,16 ; dispersive liquid-liquid microextraction -DLLME 17,18 ; single drop microextraction -SDME 19 . Despite the high number of existing techniques, the salting-out assisted liquid-liquid extraction (SALLE) technique emerged as a new alternative for the extraction of pesticide residues in water based on its advantages of simplicity of operation, rapidity (brief time for phase separation), low volume of both sample and solvent, low cost, safety and good sensitivity.…”

mentioning

confidence: 99%

Optimization and validation of the salting-out assisted liquid-liquid extraction method and analysis by gas chromatography to determine pesticides in water

et al. 2018

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The salting-out assisted liquid-liquid extraction (SALLE) was developed for the analysis of four pesticides (cypermethrin, chlorpyrifos, deltamethrin, and thiamethoxam) in water samples. For its optimization, a 2³ factorial design was used to evaluate the simultaneous behavior of three factors: sample and extraction solvent ratio, saline concentration, and stirring mode. A 1.0 mL saline solution (NaCl) was added to the single-phase mixture of water and extraction solvent to separate the phases. The mixture was stirred, allowed to stand and the top organic phase containing the pesticides of interest was analyzed by gas chromatography coupled with electron capture detector (GC/ECD). The optimized method was validated for some merit figures. The limit of detection of the method ranged from 0.15 to 5.5 µg L-1 and the limit of quantification from 5.5 to 18.2 µg L-1. The method showed satisfactory results for the linearity (R2 ≥ 0,990), precision (CV < 9 %) and accuracy (72 % ≤ recovery ≤ 90 %) for all the assessed analytes. The method showed to be simple, efficient and inexpensive for the extraction of pesticide residues. The validated method was applied to ten samples of water collected in the Zona da Mata region of the state of Minas Gerais, Brazil.

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Novel Salt-Assisted Liquid-Liquid Microextraction Technique for Environmental, Food, and Biological Samples Analysis Applications: A Review

Raghavendra

Gurrani

Tsai

et al. 2022

CAC

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Background:: Sample preparation has gained significant recognition in the chemical analysis workflow. Substantial efforts have been made to simplify the comprehensive process of sample preparation that is focused on green sample preparation methodology, including the miniaturization of extraction method, elimination of the sample pre-treatment as well as the post-treatment steps, elimination of toxic as well as hazardous organic solvent consumption, reduction in sample volume requirements, reducing the extraction time, maximization of the extraction efficiency and possible automation. Methods:: Among various microextraction processes, liquid-phase microextraction (LPME) is most abundantly used in the extraction of the target analytes. The salting-out phenomenon has been introduced into the LPME procedure and has been raised as a new technique called the ‘Salt-Assisted Liquid-Liquid Microextraction (SALLME)’. The principle is based on decreasing the solubility of less polar solvent or analyte with an increase in the concentration of the salt in aqueous solution leading to two-phase separation. Conclusion:: SALLME proved to be a simple, rapid, and cost-effective sample preparation technique for the efficient extraction and preconcentration of organic and inorganic contaminants from various sample matrices, including environmental, biological, and food samples. SALLME exhibits higher extraction efficiency and recovery and compatible with multiple analytical instruments. This review provides an overview of developments in SALLME technique and its applications to till date.

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Single Drop Microextraction: a Sensitive Multiresidue Method for Determination of Pesticides in Water Using GC/ECD

Cited by 3 publications

References 0 publications

Present state and applications of single drop microextraction for the determination of harmful organic compounds and pollutants

Present state and applications of single drop microextraction for the determination of harmful organic compounds and pollutants

Optimization and validation of the salting-out assisted liquid-liquid extraction method and analysis by gas chromatography to determine pesticides in water

Novel Salt-Assisted Liquid-Liquid Microextraction Technique for Environmental, Food, and Biological Samples Analysis Applications: A Review

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