Determination of pesticides in river water using rotating disk sorptive extraction and gas chromatography–mass spectrometry

Giordano, Ady; Richter, Pablo; Ahumada, Inés

doi:10.1016/j.talanta.2011.07.087

Cited by 58 publications

(22 citation statements)

References 17 publications

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“…Certain variables that affect the extraction performance, such as the temperature and agitation velocity, were not investigated in the present study, with the extraction being performed at ambient temperature, even when increasing the temperature results in a higher extraction efficiency due to an increase in the diffusion coefficient, as has been reported. 22 With respect to agitation, a speed of 1500 rpm was chosen because more efficient extraction has been observed with greater agitation. 23 The effect of the sample volume, extraction time and pH were optimized using a Box-Behnken design with a total of 15 experiments.…”

Section: Resultsmentioning

confidence: 99%

“…22 It is possible that the response could increase beyond the selected parameters and an extraction time higher than 180 min could become an optimum condition. In addition, the relationship between the sample volume and extraction time can also be seen in the Pareto chart in Figure 1 as another important factor.…”

Section: Resultsmentioning

confidence: 99%

“…18 TFME has been widely used for the determination of polyaromatic hydrocarbons, 19,20 pesticides 21 and endocrine disruptor compounds. 22 The aim of this study was to evaluate the use of TFME as a cheap and simple extraction technique for the determination of selected PPCPs with acidic, basic and neutral characteristics. An experimental design matrix was used to optimize the variables that determine TFME extraction performance: pH, extraction time, sample volume and the addition of matrix modifiers, such as methanol (MeOH) and sodium chloride (NaCl).…”

Section: Introductionmentioning

confidence: 99%

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Ibuprofen, Carbamazepine and β-Estradiol Determination Using Thin-Film Microextraction and Gas Chromatography-Mass Spectrometry

Giordano

Vásquez

Retamal

et al. 2016

Journal of the Brazilian Chemical Society

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The use of thin-film microextraction for the extraction of selected pharmaceutical compounds followed by gas chromatography-mass spectrometry detection was evaluated. A segment of polysiloxanes polymer sheet was used as low cost, single use, disposable extraction phase, while Milli-Q water spiked at 20 µg L −1 with the analytes was used for the optimization assays. The controlling parameters for the extraction were optimized via experimental design and it was found that an extraction time of 3 h using a sample volume of 1000 mL at pH 4 with the addition of 20% methanol and 20% sodium chloride provided the greatest extraction efficiency. Recoveries between 67.1 and 85.0% were achieved, with a repeteability lower than 20% (expressed as coefficient of variation) and limit of detection ranged from 0.41 and 0.92 µg L −1 . The proposed method show similar analytical performance when compared to the determination of the analytes using stir bar sorptive extraction.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ibuprofen, Carbamazepine and β-Estradiol Determination Using Thin-Film Microextraction and Gas Chromatography-Mass Spectrometry

Giordano

Vásquez

Retamal

et al. 2016

Journal of the Brazilian Chemical Society

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“…In our laboratory we have recently developed the technology of rotating disk sorptive extraction (RDSE), an alternative microextraction technique similar to SPME and SBSE 13 . The rotating disk extractor has the advantage of providing a greater volume of polydimethylsiloxane (PDMS) than in SPME, while also having a larger PDMS surface area than that provided by the device used in SBSE [13][14][15][16][17][18] . On the other hand, the disk can be rotated at high velocity without risk of damaging the PDMS phase, because it is only in contact with the solution, which facilitates more efficient analyte mass transfer and faster extraction 19 .…”

Section: Introductionmentioning

confidence: 99%

“…In the case of the device used in SBSE, the friction of the phase with the bottom of the vessel containing the sample decreases its durability 13 . Also the RDSE can reduce solvent usage in sample preparation steps and the disk configuration is very easy to make in the laboratory [13][14][15][16][17][18] . The aim of this study was to develop a method for PAHs determination from aqueous matrices.…”

Section: Introductionmentioning

confidence: 99%

Extraction of Polycyclic Aromatic Hydrocarbons From Water Samples Into a Rotating-Disk Microextractor and the Subsequent Determination by Gas Chromatography-Mass Spectrometry

Corrotea

Sánchez

Rubio

et al. 2014

J. Chil. Chem. Soc.

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The rotating disk sorptive extraction (RDSE) technique was applied in this study to the extraction of 16 polycyclic aromatic hydrocarbons (PAHs) in real water samples. The sorptive and desorptive behavior of the analytes were studied by using a rotating disk coated with polydimethylsiloxane (PDMS) on one of its surfaces. The optimal conditions for extractions of all analytes were: rotational velocity of the disk: 1250 rpm; sample volume: 20 mL; matrix modifier: 20 % MeOH and extraction time: 30 min. A desorption time of 10 min at 1250 rpm was used for the analytes using 5 mL of methanol. PAHs were measured in the extract by gas chromatography coupled to mass spectrometry (GC-MS). Under these conditions, recoveries ranging from 84 to 100 % were obtained in drinking water enriched with the analytes, and the precision, expressed as relative standard deviation, was between 2 and 20%. The detection limit of the method was between 8 and 115 ng L -1 depending on the analyte. The method was applied to the analysis of water samples obtained from a lagoon in Curauma, Chile, obtaining quantitative recoveries.

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New Sample Preparation Strategies for Analytical Determinations

Quintana

Ramil

Rodil

et al. 2014

Encyclopedia of Analytical Chemistry

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Sample preparation techniques have experienced an explosive development during the past decades. Procedural approached that uses minimal sample amounts reducing to the limit and sometimes eliminating completely the use of toxic and/or environmentally unfriendly solvents and reagents have emerged as standard in the analytical laboratory. At the same time, significant improvements in sensitivity and selectivity have appeared. This article revisited the principal developments of sample preparation methods for analytical determinations as produced recently. The approach is systematic, classifying the procedures into two broad groups: methods based on equilibrium and exhaustive methods. In each case, the principal methods are revisited with a brief description about the principles and chemistry involved and some examples in each case. A large number of bibliographic references allow a deeper study on each case, when necessary.

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Determination of pesticides in river water using rotating disk sorptive extraction and gas chromatography–mass spectrometry

Cited by 58 publications

References 17 publications

Ibuprofen, Carbamazepine and β-Estradiol Determination Using Thin-Film Microextraction and Gas Chromatography-Mass Spectrometry

Ibuprofen, Carbamazepine and β-Estradiol Determination Using Thin-Film Microextraction and Gas Chromatography-Mass Spectrometry

Extraction of Polycyclic Aromatic Hydrocarbons From Water Samples Into a Rotating-Disk Microextractor and the Subsequent Determination by Gas Chromatography-Mass Spectrometry

New Sample Preparation Strategies for Analytical Determinations

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