2009
DOI: 10.1016/j.aca.2009.03.032
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Indirect determination of chloride and sulfate ions in ethanol fuel by X-ray fluorescence after a precipitation procedure

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Cited by 28 publications
(19 citation statements)
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“…These ions may reduce the quality of the ethanol, making it undesirable to apply in motor engines and other appliances (de Oliveira et al 2009). Absence of chloride and sulfate ions in the ethanol produced in the present study, suggest high purity (Teixeira et al 2009), thus making cassava highly competitive.…”
Section: Discussionmentioning
confidence: 56%
“…These ions may reduce the quality of the ethanol, making it undesirable to apply in motor engines and other appliances (de Oliveira et al 2009). Absence of chloride and sulfate ions in the ethanol produced in the present study, suggest high purity (Teixeira et al 2009), thus making cassava highly competitive.…”
Section: Discussionmentioning
confidence: 56%
“…A eluição foi realizada em modo gradiente, empregando-se entre 1 e 65 mmol L de KOH a uma vazão de 0,38 mL min -1 com tempo total de corrida de 28 min. 4 2-presente no meio reacional.…”
Section: Procedimentounclassified
“…4 Entre os principais fatores que potencializam a corrosão pelo álcool nos motores estão a acidez livre, que está relacionada com a capacidade de transferência de oxigênio, e a presença de íons como cloreto e sulfato e, ainda, metais que aumentam a força iônica da solução e consequentemente sua condutividade. 5 Algumas bactérias têm participação direta neste processo de corrosão.…”
Section: Introductionunclassified
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“…Measurements of the solids retained in a filter paper were carried out by energy dispersive X-ray fluorescence, resulting in detection limits of 25 mg L -1 Cl -and 30 mg L -1 SO 4 2-, with coefficients of variation better than 7%. 182 Fast and green procedures were also developed for determining parameters of interest for quality control of gasoline. A procedure for determination of both ethanol and specific gravity was developed by means of processing data of distillation curves by multivariate analysis (PLS).…”
Section: Fuelsmentioning
confidence: 99%