In situ metathesis ionic liquid formation dispersive liquid–liquid microextraction for copper determination in water samples by electrothermal atomic absorption spectrometry

Stanisz, Ewa; Zgoła‐Grześkowiak, Agnieszka

doi:10.1016/j.talanta.2013.04.063

Cited by 43 publications

(16 citation statements)

References 32 publications

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“…Typical strategies for determining metal ions, metalloids and organometallic compounds by LPME-GFAAS involve the formation of hydrophobic metal complexes [10, 45,58,59] or ion pairs [60] in the sample solution. In these cases, a careful control of the sample pH prior to the LPME process is a basic requirement to achieve the highest sensitivity.…”

Section: Phmentioning

confidence: 99%

“…In these cases, a careful control of the sample pH prior to the LPME process is a basic requirement to achieve the highest sensitivity. It should be borne in mind that the sample pH should be adjusted to its optimal value prior to the LPME procedure [45,59]. Remarkably, speciation analysis can be performed by exploiting the selective reactivity/extractability of certain species depending on the pH, as described in section 4.…”

Section: Phmentioning

confidence: 99%

“…The last drying steps were performed at very high temperature (400 ºC for 20 s with a ramp of 50 ºC/s) [59]. Similarly, the graphite tube was preheated before the deposition of volatile Cu species [101].…”

Section: Thermal Programmentioning

confidence: 99%

See 2 more Smart Citations

Liquid-phase microextraction combined with graphite furnace atomic absorption spectrometry: A review

Calle

Pena‐Pereira

Lavilla

et al. 2016

Analytica Chimica Acta

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Section: Phmentioning

confidence: 99%

Section: Phmentioning

confidence: 99%

See 1 more Smart Citation

Liquid-phase microextraction combined with graphite furnace atomic absorption spectrometry: A review

Calle

Pena‐Pereira

Lavilla

et al. 2016

Analytica Chimica Acta

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“…Several analytical techniques, including electrothermal atomic absorption spectrometry (ETAAS) (Stanisz and Zgoła-Grzeskowiak 2013;Chen et al 2009), X-ray fluorescence spectrometry (XRF) (Kocot et al 2012), high performance liquid chromatography (HPLC) (Farajzadeh et al 2010), inductively coupled plasmaoptical emission spectrometry (ICP-OES) (Otero- Romani et al 2005;Zhao et al 2012), inductively coupled plasma-mass spectrometry (ICP-MS) (Trujillo et al 2012), flame atomic absorption spectrometry (FAAS) (Shrivas and Jaiswal 2013;Imamoglu and Tekir 2008;Karadaş and Kara 2013), voltammetry (Kumar et al 2005), and spectrophotometry (Gouda and Amin 2014;Rumori and Cerda 2003) have been reported for the determination of copper in various types of sample. Flame atomic absorption spectrometry (FAAS) is a relatively simple and readily available analytical instrument in many laboratories.…”

Section: Introductionmentioning

confidence: 99%

A New Dispersive Liquid–Liquid Microextraction Method for Preconcentration of Copper from Waters and Cereal Flours and Determination by Flame Atomic Absorption Spectrometry

Karadaş

2014

Water Air Soil Pollut

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A simple, rapid, sensitive, and inexpensive dispersive liquid-liquid microextraction method was developed for the determination of trace amounts of copper by flame atomic absorption spectrometry (FAAS). N,N′-bis-(2-hydroxy-5-bromobenzyl)-2-hydroxy-1,3-diiminopropane was used as the chelating ligand. Several analytical parameters affecting the microextraction efficiency such as, sample pH, volume of extraction solvent (carbon tetrachloride), concentrations of the chelating ligand and NaCl, and sample volume were investigated and optimized. The effect of the interfering ions on the recovery of copper was also examined. Under the optimum conditions, the detection limit (3σ) was 0.75 μg L −1 for copper with a sample volume of 10 mL, and a preconcentration factor of 20 was achieved. The relative standard deviation (R.S.D) for ten independent determinations of a 10 μg L −1 solution of Cu(II) was 2.3 %. In order to verify the accuracy of the developed method, different certified reference materials (SLRS-5, QCS-19, Rice flour unpolished high level of Cd NIES 10c) were analyzed and the results obtained were in good agreement with the certified values. The proposed method was applied to tap water, river water, seawater, rice flour, and wheat flour samples. The percentage recovery values for spiked water samples were between 95.4 and 108.4.

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“…Acidic media was not studied because DDTC is unstable in acidic media and rapidly decomposes to diethyl amine and carbon disulfide. 32 The results illustrated in Figure 1 reveal that at low and high pH levels, the studied metal ions are less likely to be extracted. The progressive decreases in extraction at pH < 7.0 might be due to the competition of the proton with the analytes for the reaction with DDTC.…”

mentioning

confidence: 97%

Determination of Traces of Ni, Cu, and Zn in Wastewater and Alloy Samples by Flame-AAS after Ionic Liquid-Based Dispersive Liquid Phase Microextraction

Zare-Shahabadi

Asaadi

Abbasitabar

et al. 2016

J. Braz. Chem. Soc.

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A procedure has been developed for simultaneous separation/preconcentration of copper, nickel, and zinc based on in situ ionic liquid-based dispersive liquid-liquid microextraction method as a prior step to their determination by flame atomic absorption spectrometry. The analytes reacted with sodium diethyl dithiocarbamate at pH 7 to form hydrophobic chelates, which were separated and preconcentrated in the ionic liquid phase. The method is fast, simple, accurate, and environmentally friendly. The parameters affecting the extraction efficiency of the proposed method such as the pH of sample solution, centrifugation time, type and volume of the dispersive solvent, and the salt effect were studied. Enrichment factors of 61.8, 61.2, and 40.0 and detection limits of 0.79, 0.93, and 0.71 µg L -1 were obtained for copper, nickel, and zinc, respectively. The relative standard deviations based on six replicate measurements were between 1.0 and 2.7%. The method was successfully applied to the extraction and determination of these metals in wastewater and alloy samples.Keywords: dispersive liquid-liquid microextraction, nickel, zinc, copper, ionic liquid, sodium diethyl dithiocarbamate IntroductionIn the priority list of Agency for Toxic Substances and Disease Registry (ATSDR), Ni is at rank 57, Zn at 75, and Cu at 118.1 Nickel is essential for many biological activities such as activation of some enzymes and enhancement of insulin activity. 2 Copper plays important roles in metabolism, including antioxidant effects, energy generation and incorporation of Fe into hemoglobin.3 Zinc also has an important role in various biological systems, such as gene expression, protein-protein interaction, and neurotransmission. 4 Although nickel, copper, and zinc come into the category of essential trace elements, when they are taken at high levels, they can also produce toxic effects. 5-8Thus, determination and monitoring of these toxic metals in industrial effluent, biological samples and food stuff are of prime concern.The trace elements level in samples to be analyzed are sometimes lower than the detection limit of analytical instruments such as flame atomic absorption spectroscopy (FAAS), inductively coupled plasma optical emission spectrometry (ICP OES) and graphite furnace-atomic absorption spectrometry (GF-AAS).9,10 Therefore, a suitable sample pretreatment step is a required step prior to the analysis. Several techniques including solid phase extraction, 11,12 liquid-liquid extraction, [13][14][15][16] cloud point extraction, 17-19 and co-precipitation 20,21 have been employed to solve this issue. Most of these techniques suffer from limitations that limit their application. Some examples of these limitations include significant chemical additives, solvent losses, large secondary wastes, unsatisfactory enrichment factors, complex equipment, and high time consumption.Dispersive liquid-liquid microextraction (DLLME) overcomes some of the drawbacks of old sample preparation techniques. [22][23][24] It is simple, fast, and does n...

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In situ metathesis ionic liquid formation dispersive liquid–liquid microextraction for copper determination in water samples by electrothermal atomic absorption spectrometry

Cited by 43 publications

References 32 publications

Liquid-phase microextraction combined with graphite furnace atomic absorption spectrometry: A review

Liquid-phase microextraction combined with graphite furnace atomic absorption spectrometry: A review

A New Dispersive Liquid–Liquid Microextraction Method for Preconcentration of Copper from Waters and Cereal Flours and Determination by Flame Atomic Absorption Spectrometry

Determination of Traces of Ni, Cu, and Zn in Wastewater and Alloy Samples by Flame-AAS after Ionic Liquid-Based Dispersive Liquid Phase Microextraction

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