Journal
FOOD CHEMISTRY
Volume 145, Issue -, Pages 927-931Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2013.08.119
Keywords
Microwave-induced combustion; Engraulis anchoita; Trace element determination; Inductively coupled plasma mass spectrometry
Funding
- CNPq
- CAPES
- FAPERGS
Ask authors/readers for more resources
A method based on microwave-induced combustion (MIC) was developed for fish (Engraulis anchoita) digestion and subsequent determination of As, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Se, and Zn by inductively coupled plasma mass spectrometry (ICP-MS). A reflux step (5 min) was applied to improve absorption and recovery of analytes. Nitric acid was investigated as absorbing solution and suitable results were achieved using 5 mol L-1 HNO3. Microwave-assisted digestion in closed vessels using concentrated HNO3 was also evaluated for comparison of results. Both sample preparation methods were considered suitable for sample digestion but MIC was preferable not only because diluted HNO3 can be used as absorbing solution but also because it provides higher efficiency of digestion and also better limits of detection. Accuracy was evaluated by the analysis of certified reference materials (DORM-2 and TORT-2) after MIC digestion with subsequent determination by ICP-MS. Agreement with certified values was better than 94%. (C) 2013 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available