Interference standard applied to sulfur determination in biodiesel microemulsions by ICP-QMS

Amais, Renata S.; Donati, George L.; Nóbrega, Joaquim A.

doi:10.1590/s0103-50532012000500002

Cited by 16 publications

(16 citation statements)

References 20 publications

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“…The microemulsions studied were obtained by the homogeneous ternary mixture of oil (soybean biodiesel), aqueous solution of 0.1 mol L −1 KCl as the aqueous phase, and propan‐1‐ol as consolute. Propan‐1‐ol was chosen as consolute because it exhibits high solubility in both biodiesel and water, besides being a widely employed solvent in the composition of several microemulsions described in the literature , .…”

Section: Methodsmentioning

confidence: 98%

Study of the Electrochemical Behavior of Biodiesel Microemulsion

et al. 2017

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Microemulsions have become a widely employed technique for the control of biodiesel quality but are still poorly understood as regard to their electrochemical behavior. In this work, we report the fundamental importance associated with the knowledge of electrochemical behavior of microemulsions composed of water in the presence of a supporting electrolyte, soybean biodiesel and propan‐1‐ol as consolute, along with the ferrocyanide–ferricyanide redox system applied as probe. The voltammetric results showed that for different compositions of microemulsions, variation in peak currents and change in system reversibility as well as in the electron transfer process were clearly noted. Furthermore, through the study of the diffusion coefficient, three different types of microemulsions including Oil/Water, Bicontinuous, and Water/Oil were successfully identified. Electrochemical impedance spectroscopy studies were also carried out aiming at obtaining more information regarding the electrode/solution interface. All the studies performed demonstrated that different types of microemulsions were formed upon exerting a direct influence on the electrochemical behavior of the redox probe. These results, in essence, point to the possibility of choosing a more suitable and advantageous microemulsion type for the development of an analytical method, as in the case, for example, of the microemulsions ME‐2 and ME‐3 which presented high voltammetric response in redox probe oxidation.

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Section: Methodsmentioning

confidence: 98%

Study of the Electrochemical Behavior of Biodiesel Microemulsion

et al. 2017

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“…It requires no instrumental modification beyond simple ICP-QMS, nor the addition of an internal standard to the sample matrix. Since its original description in the literature in 2011, the IFS method has been successfully applied to the determination of several analytes in different sample matrices (Amais et al, 2011 , 2012 , 2014 ; Donati et al, 2011 , 2012a , b ; Amaral et al, 2013 ; Latorre et al, 2015 ; Table 4 ). Although the magnitude of the IFS signal has no effect on accuracy, its fluctuation during the analysis ( V IFS ) may negatively impact analyte recoveries (first part of Equation 2; Amais et al, 2014 ).…”

Section: Non-traditional Calibration Methods Applied To Icp-msmentioning

confidence: 99%

Traditional Calibration Methods in Atomic Spectrometry and New Calibration Strategies for Inductively Coupled Plasma Mass Spectrometry

Carter¹,

Barros²,

Nóbrega³

et al. 2018

Front. Chem.

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“…Determination of Cd and Hg in biodiesel emulsions was carried out by ETAAS by using a Pd-Mg mixture as a chemical modier due to the volatile characteristics of the analytes. 77 Argon species naturally present in the plasma ( 36 Ar + , 36 ArH + , or 38 Ar + ) were explored to minimise the well-known oxygen-based polyatomic interferences ( 16 Microemulsication is also useful in eletroanalytical detection. Microemulsions were prepared by mixing biodiesel samples with n-propanol and an aqueous acid solution to form a transparent and stable mixture for the determination of Na and K by FAES.…”

Section: Emulsions and Microemulsionsmentioning

confidence: 99%

Greener procedures for biodiesel quality control

2015

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Biodiesel analysis often requires large amounts of chemicals and organic solvents with consequent generation of large waste volumes. However, several environmentally friendly alternatives have been presented for assay of biodiesel quality control parameters. These approaches include direct analysis with reagentless procedures, improved sample preparation by dilution or analyte extraction with nontoxic solvents, preparation of emulsions or microemulsions, and sample mineralisation under mild conditions as well as strategies for minimization of reagent consumption and waste generation. These greener alternatives are critically reviewed, highlighting the advantages and limitations of each approach in biodiesel analysis. Alternative analytical techniques (e.g. flow analysis and electrochemical detection), predictive studies, and measurement of physicochemical parameters are also discussed. A two-nozzle FBMN for nebulisation of biodiesel samples and water, avoiding acid digestion Ca, K, Mg, Na, and P: 0.005-0.5; minor components: 0.001-3 45 4400 | Anal. Methods, 2015, 7, 4396-4418 This journal is

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Interference standard applied to sulfur determination in biodiesel microemulsions by ICP-QMS

Cited by 16 publications

References 20 publications

Study of the Electrochemical Behavior of Biodiesel Microemulsion

Study of the Electrochemical Behavior of Biodiesel Microemulsion

Traditional Calibration Methods in Atomic Spectrometry and New Calibration Strategies for Inductively Coupled Plasma Mass Spectrometry

Greener procedures for biodiesel quality control

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