Title:	Digestão de óleo lubrificante encapsulado em forno de microondas com radiação focalizada por adição de amostra ao reagente pré-aquecido.
Authors:	BRESSANI, F. A. SILVA, H. O. NÓBREGA, J. A. COSTA, L. M. NOGUEIRA, A. R. de A.
Affiliation:	FLAVIA A. BRESSANI, UFSCAR HAMILTON O. SILVA, UFSCAR JOAQUIM A. NÓBREGA, UFSCAR LETICIA M. COSTA, UFMG ANA RITA DE ARAUJO NOGUEIRA, CPPSE.
Date Issued:	2006
Citation:	Química Nova, v.29, n.6, p.1210-1214, 2006.
Description:	FOCUSED-MICROWAVE-ASSISTED DIGESTION OF ENCAPSULATED LUBRICATING OILS: GRADUAL SAMPLEADDITION TO PRE-HEATED ACID. The applicability of the recently proposed procedure based on gradual sample addition tomicrowave-assisted pre-heated concentrated acid is limited by the sample viscosity. In this work, lubricating oil samples with high viscositywere encapsulated and manually added to the microwave-assisted pre-heated concentrated digestion mixture. The procedure was appliedfor determination of Al, Ca, Cr, Cu, Fe, Mg, Ni, P, Pb, Si, Sn, Sr, V, W, and Zn in lubricating oil by inductively coupled plasma opticalemission spectrometry (ICP OES). Determined and certified values for Ca, Mg, P, and Zn in lubricating oil were in agreement at a 95% confidence level.
Keywords:	Digestão de óleo lubrificante Radiação focalizada Forno microondas
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPPSE)