Simultaneous determination of Cu and Pb in fuel ethanol by graphite furnace AAS using tungsten permanent modifier with co-injection of Ir

Santos, Leonardo Nazário Silva dos; Neto, José Anchieta Gomes; Caldas, Naíse Mary

doi:10.1016/j.fuel.2012.04.024

Cited by 14 publications

(16 citation statements)

References 14 publications

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“…175,176,178 Several metals can also appear during the fuel storage and transport in metallic containers. [175][176][177][178][179] Finally, some metallic species can be used as additives to promote the combustion process. 180 Obviously, when a blend is considered (e.g., ethanol fuel) metals and metalloids come mainly from gasoline.…”

Section: Synthesis and Presence Of Metals Importance Of Their Determmentioning

confidence: 99%

“…Although ICP based techniques have been the most widely used to carry out the determination of metals and metalloids in ethanol fuel, alternative methods have been explored such as ETAAS, 175,[200][201][202][203][204][205]176,179,185,[206][207][208][209]183,210,211 ionic chromatography (IC) 178 and microwave plasma optical emission spectrometry (MIP-OES). 177 Several modiers have been used to carry out the determination of metals in bioethanol and ethanol fuel by ETAAS.…”

Section: Analysis By Other Techniquesmentioning

confidence: 99%

“…The most used one corresponds to a mixture of Pd(NO 3 ) 2 and Mg(NO 3 ) 2 [200][201][202] although permanent modiers such as the W-Rh mixture, 201 Ru-Zr, 203 Ir-Rh 204 or W-Ir (co-injected) have also been evaluated. 175 De Oliveira et al 200 carried out a comparative study of chemical modiers employed to determine metals in ethanol fuel. Three possibilities were studied for six elements, Pd(NO 3 ) 2 + Mg(NO 3 ) 2 , W/Rh and W + co-injection of Pd(NO 3 ) 2 + Mg(NO 3 ) 2 .…”

Section: Analysis By Other Techniquesmentioning

confidence: 99%

See 2 more Smart Citations

Metal and metalloid determination in biodiesel and bioethanol

Sánchez¹,

Sanchez²,

Lienemann

et al. 2015

J. Anal. At. Spectrom.

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Section: Synthesis and Presence Of Metals Importance Of Their Determmentioning

confidence: 99%

Section: Analysis By Other Techniquesmentioning

confidence: 99%

Section: Analysis By Other Techniquesmentioning

confidence: 99%

See 1 more Smart Citation

Metal and metalloid determination in biodiesel and bioethanol

Sánchez¹,

Sanchez²,

Lienemann

et al. 2015

J. Anal. At. Spectrom.

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“…Among the possible species present in bioethanol, metals deserve special attention. Metals and metalloids can be present in the raw material [3,4,5,6]. Moreover, bioethanol may be contaminated with metals during its synthesis [4,5,7] and/or its storage and transport in metallic containers [5,6,7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Several analytical techniques have been proposed to determine metals in ethanol fuel [10], such as electrothermal atomic absorption spectroscopy (ETAAS), [5,11,12,13,14,15,16] microwave inductively plasma optical emission spectrometry (MIP-OES) [6] or voltammetry [17,18,19,20,21]. Flame absortion atomic spectroscopy (FAAS) in turn has been widely employed for this purpose [4,22,23,24,25,26].…”

Section: Introductionmentioning

confidence: 99%

Metal and metalloid determination in bioethanol through inductively coupled plasma-optical emission spectroscopy

Sanchez

Lienemann

Todolı́

2016

Spectrochimica Acta Part B: Atomic Spectroscopy

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A new method to carry out the elemental determination of metals in bioethanol through ICP-OES has been developed. The procedure is based on the use of a heated Torch Integrated Sample Introduction System (hTISIS) to directly introduce the vaporized sample into the plasma. Two injection modes (continuous liquid aspiration and air-segmented flow injection analysis) have been evaluated. In a first step, the matrix effects caused by several ethanol-water mixtures were removed by operating the hTISIS at 400ºC in segmented injection. Meanwhile, the results also proved that the system could be operated in continuous mode at 200ºC with the complete interferences removal. Finally, twenty-eight real samples with bioethanol contents between 55% and 100% were analyzed with the methods previously developed.Regarding validation, recoveries from 80% to 120% were obtained for 18 analytes and the concentrations found with the proposed method were in agreement with those encountered with a preconcentration method, taken as a reference procedure. Limits of detection went from 3 ng mL -1 for manganese to about 500 ng mL -1 for calcium. This allowed to quantify Cr, Fe, Mg, Mn and Zn in segmented flow injection and Al, Cd, Cr, Cu, K, Mg, Mn, Na and Zn in continuous sample aspiration mode in bioethanol samples.

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Hollow fiber solid phase microextraction coupled to square wave anodic stripping voltammetry for selective preconcentration and determination of trace levels of mercury in liquid fuel samples

Nomngongo

Ngila

2015

J IRAN CHEM SOC

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Simultaneous determination of Cu and Pb in fuel ethanol by graphite furnace AAS using tungsten permanent modifier with co-injection of Ir

Cited by 14 publications

References 14 publications

Metal and metalloid determination in biodiesel and bioethanol

Metal and metalloid determination in biodiesel and bioethanol

Metal and metalloid determination in bioethanol through inductively coupled plasma-optical emission spectroscopy

Hollow fiber solid phase microextraction coupled to square wave anodic stripping voltammetry for selective preconcentration and determination of trace levels of mercury in liquid fuel samples

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