Fast batch injection analysis system for on-site determination of ethanol in gasohol and fuel ethanol

TALANTA

卷:90

Article

Pereira, Polyana F.¹  Marra, Mariana C.¹  Munoz, Rodrigo A. A.¹  Richter, Eduardo M.¹ 

[1] Univ Fed Uberlandia, Inst Quim, BR-2121 Uberlandia, MG, Brazil

关键词: Batch injection analysis (BIA);    On-site analysis;    Fuel ethanol;    Gasohol;    Fuel adulteration;   

DOI  :  10.1016/j.talanta.2012.01.004

来源: Elsevier

【 摘 要 】

A simple, accurate and fast (180 injections h(-1)) batch injection analysis (BIA) system with multiple-pulse amperometric detection has been developed for selective determination of ethanol in gasohol and fuel ethanol. A sample aliquot (100 mu L) was directly injected onto a gold electrode immersed in 0.5 mol L-1 NaOH solution (unique reagent). The proposed BIA method requires minimal sample manipulation and can be easily used for on-site analysis. The results obtained with the BIA method were compared to those obtained by gas-chromatography and similar results were obtained (at 95% of confidence level). Published by Elsevier B.V.

【 授权许可】

Free