Selective extraction of triazine herbicides based on a combination of membrane assisted solvent extraction and molecularly imprinted solid phase extraction

Chimuka, Luke; Pinxteren, Manuela van; Billing, Johan; Yilmaz, Ecevit; Jönsson, Jan Åke

doi:10.1016/j.chroma.2010.12.019

Cited by 49 publications

(19 citation statements)

References 20 publications

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“…As a result, a growth in methods for the analysis of pesticides in food samples has been observed; Supporting Information Table S2 summarizes the methods for the selected pesticides in food samples 28–39. Moreover, it is necessary to develop the methods to evaluate the presence of pesticides in sugarcane products such as sugarcane juice, which are daily consumed in several countries.…”

Section: Introductionmentioning

confidence: 99%

Development of a new stir bar sorptive extraction coating and its application for the determination of six pesticides in sugarcane juice

Barletta

Gomes

Santos-Neto

et al. 2011

J of Separation Science

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In this article, a novel polydimethylsiloxane/activated carbon (PDMS-ACB) material is proposed as a new polymeric phase for stir bar sorptive extraction (SBSE). The PDMS-ACB stir bar, assembled using a simple Teflon(®)/glass capillary mold, demonstrated remarkable stability and resistance to organic solvents for more than 150 extractions. The SBSE bar has a diameter of 2.36 mm and a length of 2.2 cm and is prepared to contain 92 μL of polymer coating. This new PDMS-ACB bar was evaluated for its ability to determine the quantity of pesticides in sugarcane juice samples by performing liquid desorption (LD) in 200 μL of ethyl acetate and analyzing the solvent through gas chromatography coupled with mass spectrometry (GC-MS). A fractional factorial design was used to evaluate the main parameters involved in the extraction procedure. Then, a central composite design with a star configuration was used to optimize the significant extraction parameters. The method used demonstrated a limit of quantification (LOQ) of 0.5-40 μg/L, depending on the analyte detected; the amount of recovery varied from 0.18 to 49.50%, and the intraday precision ranged from 0.072 to 8.40%. The method was used in the analysis of real sugarcane juice samples commercially available in local markets.

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Section: Introductionmentioning

confidence: 99%

Development of a new stir bar sorptive extraction coating and its application for the determination of six pesticides in sugarcane juice

Barletta

Gomes

Santos-Neto

et al. 2011

J of Separation Science

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“…However, the LOD of our procedure is higher than those presented in 1, 6, 24, 25 except for the presented methods 26 . The time of analysis of the proposed method is shorter than those of the three methods for atrazine and simazine 6,24,25 . Mobile phase composition of the proposed method is different from other HPLC methods 1, 6, 24-27 .…”

Section: Resultsmentioning

confidence: 81%

“…It is concluded that the proposed method is fast, cheap and easy to operate with a good analytical performance as the compared methods in Table 6. Moreover, the proposed method appears to be an alternative for other methods, because mobile phase is different, analaysis time is short [24][25][26] and may be applied to different matrices. Proposed method was applied for the first time to the thermal samples.…”

mentioning

confidence: 94%

Determination of Mesotrione, Simazine and Atrazine by RP- HPLC in Thermal Water, Sediment and Vegetable Samples

Baranowska¹,

Akdoğan²,

Barchańska³

et al. 2012

Analytical Chemistry Letters

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This paper presents a simple, relatively inexpensive method for the detection of a group of commonly used herbicides such as mesotrione, simazine and atrazine in vegetables, thermal water and sediment samples by means of reversed phase-high performance liquid chromatography (RP-HPLC) with ultraviolet detection (DAD). The calibration curves were linear in the concentration range of 0.10-5.00 μg/mL. The limits of detection calculated at a signal-to-noise ratio of 3 were in the range of 0.03-0.10 μg/mL. The uncertainties of analytical methods were lower than 10 %. The method was validated by spiking recovery test of mesotrione, simazine and atrazine from the samples. Simazine and atrazine in the concentration range of 0.03-0.82 μg/g were detected in most of the vegetable samples, whereas mesotrione in the concentration of 2.40 and 4.96 μg/ mL was found only in thermal waters and 0.28 μg/g in a sediment sample.

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“…22 However, salt addition may also slightly reduce the extraction efficiency for non-polar compounds. 23 Different effects of the ionic strength on the extraction yield can be obtained depending on the nature of the analytes. In the current study, acetone, which is a watermiscible solvent, acted as the acceptor phase of the hexane: acetone (9 : 1, v/v) mixture.…”

Section: Resultsmentioning

confidence: 99%

Rapid analysis of pyrethroid insecticides in aquaculture seawater samples viamembrane-assisted solvent extraction coupled with gas chromatography-electron capture detection

Shi

Song

Sun

et al. 2012

Analyst

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A simple, efficient, and environmentally friendly membrane-assisted solvent extraction (MASE) method for the extraction and preconcentration of six pyrethroid insecticides from aquaculture seawater samples followed by gas chromatography-electron capture detection (GC-ECD) was successfully proposed. The operating conditions for MASE, such as the extraction solvent, solvent volume, NaCl concentration, stirring rate, extraction time, and temperature, were optimized. Compared to conventional Florisil-solid phase extraction (SPE), higher extraction recoveries (85.9% to 105.9%) of three spiked levels of the six pyrethroid pesticides in aquaculture seawater were obtained using MASE, and the RSD values were lower than 7.9%. The limits of detection (LOD, signal-to-noise ratio (S/N)¼3) and quantification (LOQ, S/N ¼ 10) were in the range of 0.037-0.166 and 0.12-0.55 mg L À1 , respectively. The results demonstrate the excellent applicability of the MASE method in analyzing the six pyrethroid pesticides in aqueous samples. The proposed method exhibited a high potential for routine monitoring analysis of pyrethroid insecticides in seawater samples.

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Selective extraction of triazine herbicides based on a combination of membrane assisted solvent extraction and molecularly imprinted solid phase extraction

Cited by 49 publications

References 20 publications

Development of a new stir bar sorptive extraction coating and its application for the determination of six pesticides in sugarcane juice

Development of a new stir bar sorptive extraction coating and its application for the determination of six pesticides in sugarcane juice

Determination of Mesotrione, Simazine and Atrazine by RP- HPLC in Thermal Water, Sediment and Vegetable Samples

Rapid analysis of pyrethroid insecticides in aquaculture seawater samples viamembrane-assisted solvent extraction coupled with gas chromatography-electron capture detection

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