Ultrasound-assisted emulsification–microextraction of emergent contaminants and pesticides in environmental waters

Regueiro, Jorge; Llompart, Marı́a; Garcı́a-Jares, Carmen; Garcı́a-Monteagudo, Juán C.; Cela, R.

doi:10.1016/j.chroma.2008.02.091

Cited by 516 publications

(245 citation statements)

References 34 publications

Supporting

Mentioning

232

Contrasting

Unclassified

Order By: Relevance

“…The resulted sedimented phase is analyzed [13][14][15]23]. Recently, an innovative configuration of DLLME based on ultrasound assisted emulsification-microextraction has been developed [28]. A microvolume of water-immisible extraction solvent is dispersed into sample aqueous solution by ultrasound-assisted emulsification without using dispersive solvent.…”

Section: Introductionmentioning

confidence: 99%

Development and validation of an ultrasound-assisted surfactant-enhanced emulsification microextraction method for liquid chromatographic determination of carbamate residues in fruit juices

Vichapong¹,

Burakham²

2015

Acta Chromatographica

View full text Add to dashboard Cite

Summary.A microextraction procedure based on ultrasound-assisted surfactantenhanced emulsification microextraction (UASEME) was optimized and validated for preconcentration of carbamate pesticides prior to fast determination using high-performance liquid chromatography (HPLC) with monolithic column. The nonionic surfactant (Tween 20) was used as an emulsifier, and chloroform was selected as an extraction solvent. The experimental parameters affecting the extraction efficiency, such as the kind, concentration, and volume of surfactant, the kind of extraction solvent and its volume, salt addition, ultrasonic extraction time, and centrifugation time, were optimized. Under the selected UASEME and HPLC conditions, separation of five carbamate pesticides (carbofuran, carbaryl, isoprocarb, methiocarb, and promecarb) was achieved within 10 min. The linearity of the method was obtained in the wide range of 2-5000 μg L −1 , with correlation coefficients of 0.9931-0.9970. The limits of detection were in the range of 0.4-7.0 μg L −1 . The relative standard deviations (n = 5) were less than 0.59% and 4.86% for retention time and peak area, respectively. The enrichment factors of the developed UASEME method were in the range of 33-166. The fruit juice samples (at fortified levels of 0.25, 0.50, and 1.00 mg L −1 ) were successfully analyzed, and the relative recoveries were obtained in the range of 81-115%.

show abstract

Section: Introductionmentioning

confidence: 99%

Development and validation of an ultrasound-assisted surfactant-enhanced emulsification microextraction method for liquid chromatographic determination of carbamate residues in fruit juices

Vichapong¹,

Burakham²

2015

Acta Chromatographica

View full text Add to dashboard Cite

show abstract

“…High recoveries were received in this case (90.5-109.4 %). Ultrasonic radiation was efficient for acceleration of mass transfer process between two immiscible phases (Ozcan et al 2009;Regueiro et al 2008). Extraction with chloroform (100-200 μl) was performed from 10 ml of water sample in an ultrasonic water bath for 5-10 min.…”

Section: Sample Preparation Procedures For Organochlorinated Pollutantsmentioning

confidence: 99%

Sample preparation procedures for analysis of organochlorinated pollutants and PAHs in surface water samples

Vyviurska

S̆pánik

2014

Acta Chimica Slovaca

View full text Add to dashboard Cite

This review focuses on sample preparation procedures used for chromatographic analysis of the most common organochlorinated pollutants and PAHs in water samples. The studied pollutants have a long persistence in environment, possible carcinogenic effects, and their application has been banned in many countries. The standard ISO procedures with the modern sample preparation procedures were compared in the term of recovery effectiveness for target analytes.

show abstract

“…Various approaches such as, ultrasound-assisted emulsification microextraction [7], ultrasoundassisted surfactant-enhanced microextraction [8], vortex-assisted liquid-liquid microextraction [9] and vortex-assisted surfactantenhanced emulsification liquid-liquid microextraction [10,11], were reported to overcome this disadvantage.…”

Section: Introductionmentioning

confidence: 99%

A fully automated effervescence assisted dispersive liquid–liquid microextraction based on a stepwise injection system. Determination of antipyrine in saliva samples

Medinskaia

Vakh

Aseeva

et al. 2016

Analytica Chimica Acta

View full text Add to dashboard Cite

Ultrasound-assisted emulsification–microextraction of emergent contaminants and pesticides in environmental waters

Cited by 516 publications

References 34 publications

Development and validation of an ultrasound-assisted surfactant-enhanced emulsification microextraction method for liquid chromatographic determination of carbamate residues in fruit juices

Development and validation of an ultrasound-assisted surfactant-enhanced emulsification microextraction method for liquid chromatographic determination of carbamate residues in fruit juices

Sample preparation procedures for analysis of organochlorinated pollutants and PAHs in surface water samples

A fully automated effervescence assisted dispersive liquid–liquid microextraction based on a stepwise injection system. Determination of antipyrine in saliva samples

Contact Info

Product

Resources

About