Temperature controlled ionic liquid-dispersive liquid phase microextraction for determination of trace lead level in blood samples prior to analysis by flame atomic absorption spectrometry with multivariate optimization

Shah, Faheem; Kazi, Tasneem Gul; Naeemullah,; Afridi, Hassan Imran; Soylak, Mustafa

doi:10.1016/j.microc.2011.09.009

Cited by 84 publications

(31 citation statements)

References 27 publications

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“…Several preconcentration methods, co-precipitation, 15 liquid-liquid extraction, 16 solid-phase and like cloud point extraction, 17 ultrasound assisted emulsication microextraction 18 and hollow ber supported liquid membrane microextraction 19 have been mostly used for the separation and preconcentration of analytes. 25 The potential applications of RTILs in LLE of metal ions are mainly based on complexation of them with chelating agents and nally extraction by partitioning between the different phases. A novel LLE method, ionic liquid-based dispersive liquid-liquid microextraction (IL-DLLmE), was introduced recently and has been successfully applied to the extraction and enrichment of various organic and inorganic analytes and metal complexes.…”

Section: Introductionmentioning

confidence: 99%

Determination of trace levels of iron in serum samples of hepatitis B and C patients using dispersive liquid–liquid microextraction

et al. 2015

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An environmentally friendly ionic liquid-based dispersive liquid-liquid microextraction (IL-DLLmE) method was developed for the preconcentration of trace levels of iron (Fe) in serum samples of hepatitis B and C patients, prior to its determination by flame atomic absorption spectrometry. The procedure was based on complexation of iron with a chelating reagent, 8-hydroxyquinoline (oxine), whereas an ionic liquid, 1butyl-3-methylimidazolium hexafluorophosphate [C 4 MIM][PF 6 ], and ethanol were chosen as extracting and dispersive solvents, respectively. The factors affecting the efficiency of IL-DLLmE, such as the amount of IL, pH, centrifugation time and ligand concentration, were investigated in detail. The resulting data indicated that the coexisting cations and anions ions had no apparent influence on determination ofFe at trace levels. Under optimal experimental conditions, the enhancement factor and the limit of detection were 59.1 and 1.29 mg L À1 , respectively. The relative standard deviation for five replicate determinations of Fe at 50 mg L À1 was calculated to be <5.0%. The developed method was validated by determining Fe in a certified reference material of serum. The proposed method can be successfully used for the enrichment of Fe in acid digested serum samples of female hepatitis B and C patients.

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Section: Introductionmentioning

confidence: 99%

Determination of trace levels of iron in serum samples of hepatitis B and C patients using dispersive liquid–liquid microextraction

et al. 2015

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“…The enrichment performance can be improved by tuning the volume and the structure of ionic liquid. The results demonstrate that CIAME is a simple, rapid, sensitive, and easy to operate method, and it can be very useful in the analysis of pollutants (Zhang et al 2011;Shah et al 2012).…”

Section: Introductionmentioning

confidence: 85%

Application of cold-induced aggregation microextraction as a fast, simple, and organic solvent-free method for the separation and preconcentration of Se(IV) in rice and various water samples

Rahnama

Abed

2014

Environ Monit Assess

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The developed method is based on cold-induced aggregation microextraction of Se(IV) using the 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid as an extractant followed by spectrophotometry determination. The extraction of Se(IV) was performed in the presence of dithizone as the complexing agent. In this method, a very small amount of 1-butyl-3-methylimidazolium hexafluorophosphate was added to the sample solution containing Se-dithizone complex. Then, the solution was kept in a thermostated bath at 50 °C for 4 min. Subsequently, the solution was cooled in an ice bath and a cloudy solution was formed. After centrifuging, the extractant phase was analyzed using a spectrophotometric detection method. Some important parameters that might affect the extraction efficiency were optimized (HCl, 0.6 mol L(-1); dithizone, 4.0 × 10(-6) mol L(-1); ionic liquid, 100 μL). Under the optimum conditions, good linear relationship, sensitivity, and reproducibility were obtained. The limit of detection (LOD) (3Sb/m) was 1.5 μg L(-1), and the relative standard deviation (RSD) was 1.2 % for 30 μg L(-1) of Se(IV). The linear range was obtained in the range of 5-60 μg L(-1). It was satisfactory to analyze rice and various water samples.

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“…Further, based on the advantages, it can be easily recycled. In recent years, the reports about using temperature-sensitive ionic liquids as extractant have been mostly concentrated in the area of metal ions [8, 9], but rarely involved in dyes.…”

Section: Introductionmentioning

confidence: 99%

Solid-Liquid Separation Properties of Thermoregulated Dicationic Ionic Liquid as Extractant of Dyes from Aqueous Solution

Cui

Zou

et al. 2018

Journal of Analytical Methods in Chemistry

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Two thermoregulated dicationic ionic liquids were synthesized and applied for effective extraction of the common dye malachite green oxalate (MG). The extraction parameters such as amount of ionic liquids, pH of water phase, extraction time, cooling time, and centrifugal time on the extraction efficiency were investigated systematically. It revealed that the dye has been successfully extracted into the ionic liquids, with high extraction efficiency higher than 98%, and recovery of 98.2%–100.8%, respectively. Furthermore, these ionic liquids can be recycled easily after elution. The reusable yields were 87.1% and 88.7%. The extraction of the dye into the thermoregulated ionic liquid provides a method of minimizing pollution of waste water potentially.

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Temperature controlled ionic liquid-dispersive liquid phase microextraction for determination of trace lead level in blood samples prior to analysis by flame atomic absorption spectrometry with multivariate optimization

Cited by 84 publications

References 27 publications

Determination of trace levels of iron in serum samples of hepatitis B and C patients using dispersive liquid–liquid microextraction

Determination of trace levels of iron in serum samples of hepatitis B and C patients using dispersive liquid–liquid microextraction

Application of cold-induced aggregation microextraction as a fast, simple, and organic solvent-free method for the separation and preconcentration of Se(IV) in rice and various water samples

Solid-Liquid Separation Properties of Thermoregulated Dicationic Ionic Liquid as Extractant of Dyes from Aqueous Solution

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