| Full text | |
| Author(s): |
Raquel C. Machado
;
Alex Virgilio
[2]
;
Clarice D. B. Amaral
;
Daniela Schiavo
[4]
;
Joaquim A. Nóbrega
[5]
;
Ana Rita A. Nogueira
[6]
Total Authors: 6
|
| Document type: | Journal article |
| Source: | Journal of the Brazilian Chemical Society; v. 27, n. 11, p. 2076-2081, 2016-11-00. |
| Abstract | |
In the present work, an inductively coupled plasma-tandem mass spectrometer (ICP-MS/MS) operating in single quadrupole and mass shift modes were evaluated for As determination in mineral fertilizers and agricultural gypsum with high contents of rare earth elements. For MS/MS mode, oxygen was the gas introduced into the octopole reaction system (ORS3). Samples were prepared by microwave-assisted digestion with diluted nitric acid solution. The accuracy was checked by analysis of a fertilizer certified reference material (NIST SRM 695) and by addition and recovery experiments. When operating in single quadrupole mode, recoveries ranged from 59 to 151%; while values obtained by MS/MS mode varied from 81 to 105% when 0.30 mL min-1 O2 was introduced into the ORS3. Limits of detection for As+ in single quadrupole and AsO+ in MS/MS mass shift mode were 6 and 9 ng L-1, respectively. (AU) | |
| FAPESP's process: | 15/14488-0 - Analytical method development for quality determination of fertilizers and tanning waste |
| Grantee: | Ana Rita de Araujo Nogueira |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 14/18393-1 - Evaluation of gradient flow analysis as calibration strategy for spectroanalytical techniques with plasma source |
| Grantee: | Alex Virgilio |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 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) |
| Grantee: | Raquel Cardoso Machado |
| Support Opportunities: | Scholarships in Brazil - Doctorate |