| Journal: | Quimica nova |
| Database: | PERIÓDICA |
| System number: | 000313264 |
| ISSN: | 0100-4042 |
| Authors: | Bressani, Flavia A1 Silva, Hamilton O Nobrega, Joaquim A Costa, Leticia M Nogueira, Ana Rita A2 |
| Institutions: | 1Universidade Federal de Sao Carlos, Departamento de Quimica, Sao Carlos, Sao Paulo. Brasil 2Empresa Brasileira de Pesquisa Agropecuaria, Pecuaria Sudeste, Sao Carlos, Sao Paulo. Brasil |
| Year: | 2006 |
| Season: | Nov |
| Volumen: | 29 |
| Number: | 6 |
| Pages: | 1210-1214 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | The applicability of the recently proposed procedure based on gradual sample addition to microwave-assisted pre-heated concentrated acid is limited by the sample viscosity. In this work, lubricating oil samples with high viscosity were encapsulated and manually added to the microwave-assisted pre-heated concentrated digestion mixture. The procedure was applied for 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 optical emission spectrometry (ICP OES). Determined and certified values for Ca, Mg, P, and Zn in lubricating oil were in agreement at a 95% confidence level |
| Disciplines: | Química |
| Keyword: | Química analítica, Química industrial, Aceite lubricante, Determinación de metales, Encapsulación, Microondas dirigidas |
| Keyword: | Chemistry, Analytical chemistry, Industrial chemistry, Lubricating oil, Metal determination, Encapsulation, Focused microwaves |
| Full text: | Texto completo (Ver HTML) |
