Fast emulsion-based method for simultaneous determination of Co, Cu, Pb and Se in crude oil, gasoline and diesel by graphite furnace atomic absorption spectrometry

Luz, Maciel Santos; Nascimento, Angerson Nogueira do; Oliveira, Pedro Vitoriano de

doi:10.1016/j.talanta.2013.05.034

Cited by 42 publications

(19 citation statements)

References 23 publications

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“…[32,33] For the development of sustainable energy and environmental benefits, the collection and discrimination of cobalt is crucial.E merging analytical technologies have been used to effectively detect ultratrace amounts of cobalt ions (Co 2 + ). These include flame atomica bsorption spectrometry, [34] inductively coupled plasma mass spectrometry (ICP-MS), [35] atomica bsorption spectrometry, [36] electrothermal atomic absorption spectrometry, [37] high-performance liquid chromatography (HPLC) combined with ICP-MS, [38] fluoro-and ultraviolet-visible (UV/Vis) spectrophotometry, [39] and cathodic adsorptives tripping voltammetry. [40] These powerful and analytical techniques mainly require multitreatment steps of the Co 2 + ions prior to their discrimination and recognition.…”

Section: Introductionmentioning

confidence: 99%

Mesotubular‐Structured Hybrid Membrane Nanocontainer for Periodical Monitoring, Separation, and Recovery of Cobalt Ions from Water

El‐Safty

Sakai

Selim

et al. 2015

Chemistry An Asian Journal

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Exposure to toxins can cause deleterious effects even at very low concentrations. We have developed an optical sensor, filter, and extractor (i.e., containerlike) in a nanoscale membrane (NSM) for the ultratrace sensing, separation, and recovery of Co(2+) ions from water. The design of the NSM is successfully controlled by dense decoration of a hydrophobic oil-hydrophilic receptor onto mesoscale tubular-structured silica nanochannels made of a hybrid anodic alumina membrane. The particular structure of the nanocontainer is ideal to control the multiple functions of the membrane, such as the optical detection/recognition, rejection/permeation, and recovery of Co(2+) species in a single step. A typical sensor, filter, and extractor assessment experiment was performed by using a benchtop contact time technique and a flow-through cell detector to allow for precise control of the optical detection and exclusive rejection of target ions and the permeation of nontarget metal ions in water. This nanocontainer membrane has great potential to meet the increasing needs of purification and separation of Co(2+) ions.

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Section: Introductionmentioning

confidence: 99%

Mesotubular‐Structured Hybrid Membrane Nanocontainer for Periodical Monitoring, Separation, and Recovery of Cobalt Ions from Water

El‐Safty

Sakai

Selim

et al. 2015

Chemistry An Asian Journal

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“…The limits of detection obtained by the present procedure were higher than those for the analysis of gasoline samples. However, the majority of the method reported used an analytical technique with higher sensitivity than ICP OES, such as GF AAS 3,25 or ICP MS 26 . We would like to emphasize that all methods in Table 6 used a sample preparation in order to increase the sensitivity (e.g., preconcentration procedures) or to remove/reduce the organic solvent loading (e.g., microwave assisted acid digestion or emulsion).…”

Section: Commercial Fuel Samples Analysismentioning

confidence: 99%

Determination of As, Se, and Hg in fuel samples by in-chamber chemical vapor generation ICP OES using a Flow Blurring® multinebulizer

2017

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In this work, a new and simple analytical methodology based on in-chamber chemical vapor generation has been developed for the spectrochemical analysis of commercial fuel samples. A multiple nebulizer with three nebulization units has been employed for this purpose: One unit was used for sample introduction, while the other two were used for the necessary reagent introduction. In this way, the aerosols were mixed inside the spray chamber. Through this method, analyte transport and, therefore, sensitivity are improved in inductively coupled plasma-optical emission spectrometry. The factors (i.e., variables), influencing chemical vapor generation, have been optimized using a multivariate approach. Under optimum chemical vapor generation conditions ([NaBH] = 1.39%, [HCl] = 2.97 M, total liquid flow = 936 μL min), the proposed sample introduction system allowed the determination of arsenic, selenium, and mercury up to 5 μg g with a limit of detection of 25, 140, and 13 μg kg, respectively. Analyzing spiked commercial fuel samples, recovery values obtained were between 96 and 113%, and expanded uncertainty values ranged from 4 to 16%. The most striking practical conclusion of this investigation is that no carbon deposit appears on the plasma torch after extended periods of working. Graphical abstract A new and simple analytical methodology based on in-chamber chemical vapor generation has been developed for the spectrochemical analysis of commercial fuel samples in ICP OES.

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“…Therefore, it is important to measure them in the presence of each other. Several techniques such as atomic absorption spectrometry (AAS), [12,13] X-ray fluorescence, [14] stripping voltammetry, [15] inductively coupled plasma atomic emission spectrometry (ICP-MS), [16] inductively coupled plasma optical emission spectroscopy (ICP-OES) [17] graphite furnace atomic absorption spectrometry (GF-AAS) [18,19] and spectrometry [20] have been used for the simultaneous determination of these ions in different samples.…”

Section: Introductionmentioning

confidence: 99%

Analytical approaches for the determination of cobalt, nickel and copper by aeration-assisted homogeneous liquid–liquid microextraction and flame atomic absorption spectrometry

Khorshidi

Ниази

2016

Separation Science and Technology

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A new aeration-assisted homogeneous liquid-liquid microextraction using high-density solvent for determination of copper, nickel and cobalt, as a prior step to their determination, coupled to flame atomic absorption spectrometry is presented. Under the optimum conditions, the calibration graphs were linear in the range of 5.0-600.0 ng/mL for copper, 10.0-450.0 ng/mL for nickel and 8.0-500.0 ng/mL for cobalt. The limits of detection were 1.3, 3.6 and 2.7 ng/mL and the enrichment factor estimated to be 350, 340 and 360, for copper, nickel and cobalt, respectively. The proposed method was successfully applied for the determination of these cations in different samples. ARTICLE HISTORY

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Fast emulsion-based method for simultaneous determination of Co, Cu, Pb and Se in crude oil, gasoline and diesel by graphite furnace atomic absorption spectrometry

Cited by 42 publications

References 23 publications

Mesotubular‐Structured Hybrid Membrane Nanocontainer for Periodical Monitoring, Separation, and Recovery of Cobalt Ions from Water

Mesotubular‐Structured Hybrid Membrane Nanocontainer for Periodical Monitoring, Separation, and Recovery of Cobalt Ions from Water

Determination of As, Se, and Hg in fuel samples by in-chamber chemical vapor generation ICP OES using a Flow Blurring® multinebulizer

Analytical approaches for the determination of cobalt, nickel and copper by aeration-assisted homogeneous liquid–liquid microextraction and flame atomic absorption spectrometry

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