Multi-elementary and isotopic determinations in samples of agronomical and environ...
| Grant number: | 16/07749-5 |
| Support type: | Scholarships abroad - Research Internship - Doctorate |
| Effective date (Start): | September 01, 2016 |
| Effective date (End): | July 31, 2017 |
| Field of knowledge: | Physical Sciences and Mathematics - Chemistry |
| Principal Investigator: | Ana Rita de Araujo Nogueira |
| Grantee: | Raquel Cardoso Machado |
| Supervisor abroad: | Martín Resano Ezcaray |
| Home Institution: | Pecuária Sudeste. Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA). Ministério da Agricultura, Pecuária e Abastecimento (Brasil). São Carlos , SP, Brazil |
| Local de pesquisa : | Universidad de Zaragoza, Spain |
| Associated to the scholarship: | 13/26672-5 - Development of procedures to as, BA, CD, Cr, Pb and Si determination in fertilizer samples by using microwave inductive plasma optical emission spectrometry (MIP OES), BP.DR |
Abstract The analysis of fertilizers by inductively coupled plasma mass spectrometry (ICP-MS) can be affected by the complex composition of the matrix, which may cause non-spectral and spectral interferences and, consequently, impairs accuracy and precision. In this context, dynamic reaction cell (DRC) with methyl fluoride (CH3F) as reaction gas and electrothermal vaporization (ETV) have been used as alternatives to overcome spectral interferences. On the other hand, to compensate for non-spectral interferences, isotope dilution (ID) has demonstrated its possibilities. Thus, the goal of this project is to evaluate the combination of ID and DRC-ICP-MS, whenever feasible, for the determination of As, Cd, Cr, Hg, Ni and Pb in the analysis of liquid and slurry fertilizer samples. ETV will also be evaluated as sample introduction system for direct solid and slurries sampling aiming at the quantification of the same elements by means of DRC-ICP-MS. (AU) | |