Microextraction technique based on ionic liquid for preconcentration and determination of palladium in food additive, sea water, tea and biological samples

vaezzadeh, Meysam; Shemirani, Farzaneh; Majidi, Behrooz

doi:10.1016/j.fct.2010.03.005

Cited by 73 publications

(21 citation statements)

References 33 publications

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“…One of the interesting extraction techniques, which has considered both miniaturization and application of RTILs as green solvents, is in situ emulsification microextraction [18][19][20]. This technique is based on a simple metathesis reaction which transforms a water soluble IL associated with the anions such as chloride ( …”

Section: Introductionmentioning

confidence: 99%

In situ emulsification microextraction using a dicationic ionic liquid followed by magnetic assisted physisorption for determination of lead prior to micro-sampling flame atomic absorption spectrometry

Shokri

Beiraghi

Seidi

2015

Analytica Chimica Acta

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Section: Introductionmentioning

confidence: 99%

In situ emulsification microextraction using a dicationic ionic liquid followed by magnetic assisted physisorption for determination of lead prior to micro-sampling flame atomic absorption spectrometry

Shokri

Beiraghi

Seidi

2015

Analytica Chimica Acta

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“…Another useful method, which was termed as cold-induced aggregation microextraction (CIAME) and is based on the use of ILs for homogeneous liquid-liquid microextraction (HLLME), was developed by Baghdadi and Shemirani in 2008 [13], and further modified in 2010 [14]. In first method, a suitable temperature is used to fully dissolve the room-temperature IL in the sample solution without the use of disperser solvent and then aggregated at the low-temperature [15,16]. In comparison with DLLME, no pure disperser solvent is used, which can reduce the extraction recovery, Furthermore, in order to have a cloudy system no syringe is required.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound assisted cold-induced aggregation: an improved method for trace determination of volatile phenol

et al. 2012

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We report on a simple, rapid and efficient extraction procedure, referred to as ultrasound-assisted cold-induced aggregation (USA-CIAME), for the extraction of phenol from aqueous samples. In this method, very small amounts of the ionic liquid 1-hexyl-3-methylimidazolium hexafluorophosphate (the extractant) are dissolved in a sample solution containing phenol and ultrasonicated for 1 min. The solution is cooled in an ice bath upon which a cloudy solution forms. Following centrifugation, the extractant phase settles at the bottom of a conical-bottom centrifuge tube. Phenol is photometrically determined after its chromogenic reaction with 4-aminoantipyrine in the presences of hexacyanoferrate at pH 10.0. Compared to the conventional cold-induced aggregation microextraction (CIAME) and dispersive liquid liquid microextraction (DLLME), the optimized approach displays the highest extraction efficiency at room temperature, and the shortest extraction time (5 min). Key parameters affecting the performance were evaluated and optimized. Under optimum conditions, the limit of detection of phenol is 0.86 μg L −1 , and the enrichment factor is 75. The calibration graph as linear over the range from 3 to 150 μg L −1 , and the relative standard deviation is 2.65% (n05). The method was successfully applied to the determination of phenol in water samples.

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“…Among the trend of miniaturization, liquid‐phase microextraction (LPME) techniques are quite successful , and especially those based on dispersive liquid–liquid microextraction (DLLME) . The use of DLLME for tea samples has only been reported for the determination of a group of organophosphorous pesticides , palladium , and copper .…”

Section: Introductionmentioning

confidence: 99%

Utilization of an ionic liquid in situ preconcentration method for the determination of the 15 + 1 European Union polycyclic aromatic hydrocarbons in drinking water and fruit‐tea infusions

Germán-Hernández

Crespo-Llabrés

Pino

et al. 2013

J of Separation Science

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An ionic liquid (IL) in situ preconcentration method was optimized and applied to the monitoring of the 15 + 1 European Union polycyclic aromatic hydrocarbons in water and fruit-tea infusions. The optimized method utilizes 10 mL of water (or infusion) containing 38 μL of the IL 1-butyl-3-methylimidazolium chloride and a content of 36.1 g/L NaCl, which are mixed with Li-NTf2 (340 μL, 0.2 g/mL), followed by vortex (4 min) and centrifugation (5 min). The obtained microdroplet containing hydrocarbons is diluted with acetonitrile and injected into an HPLC with UV/Vis and fluorescence detection. The method presented average enrichment factors of 127 for water (tap water and bottled water) and 27 for two fruit-tea infusions; with average relative recoveries of 86.7 and 106% for water and fruit-tea infusions, respectively. The method was sensitive, with detection limits ranging from 0.001 to 0.050 ng/mL in water, and from 0.010 to 0.600 ng/mL in fruit-tea infusions, for the fluorescent hydrocarbons. Real extraction efficiencies ranged from 12.7 to 58.7% for water, and from 20.2 to 117% for the infusions. The method was also fast (~12 min) and free of organic solvents in the extraction step.

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Microextraction technique based on ionic liquid for preconcentration and determination of palladium in food additive, sea water, tea and biological samples

Cited by 73 publications

References 33 publications

In situ emulsification microextraction using a dicationic ionic liquid followed by magnetic assisted physisorption for determination of lead prior to micro-sampling flame atomic absorption spectrometry

In situ emulsification microextraction using a dicationic ionic liquid followed by magnetic assisted physisorption for determination of lead prior to micro-sampling flame atomic absorption spectrometry

Ultrasound assisted cold-induced aggregation: an improved method for trace determination of volatile phenol

Utilization of an ionic liquid in situ preconcentration method for the determination of the 15 + 1 European Union polycyclic aromatic hydrocarbons in drinking water and fruit‐tea infusions

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