1. Microwave-Assisted Solid Sampling Analysis Coupled to Flame Furnace Atomic Absorption Spectrometry for Cd and Pb Determination in Food-Contact Polymers
- Author
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Alessandra Schneider Henn, Angelica Chaiani Frohlich, Matheus Felipe Pedrotti, Vitoria Hagemann Cauduro, Marcos Leandro Silva Oliveira, Erico Marlon de Moraes Flores, and Cezar Augusto Bizzi
- Subjects
Environmental effects of industries and plants ,Renewable Energy, Sustainability and the Environment ,solid sampling ,Geography, Planning and Development ,TJ807-830 ,Polymer analysis ,Management, Monitoring, Policy and Law ,TD194-195 ,Solid sampling ,polymer analysis ,Renewable energy sources ,Environmental sciences ,Toxic element determination ,MW-SS-FF-AAS ,toxic element determination ,GE1-350 ,microwave-induced combustion ,Microwave-induced combustion - Abstract
Microwave-assisted solid sampling analysis coupled to flame furnace atomic absorption spectrometry (MW-SS-FF-AAS) was used for Cd and Pb determination in food-contact polymer samples, with the aim of minimizing reagents and laboratory waste. Operational parameters, such as the FF tube design, the oxygen flow rate, the flame stoichiometry, the sample mass, among others, were evaluated and optimized. Calibration was performed using only reference solutions, and the limits of quantification were 1.7 and 4.6 µg g−1 for Cd and Pb, respectively. Accuracy was assessed by the analysis of certified reference materials (CRMs), and by comparison with the results obtained by inductively coupled plasma mass spectrometry after microwave-assisted wet digestion. The MW-SS-FF-AAS results for the CRMs showed no statistical difference with the certified values, and good agreement was observed with the results of the digestion method. The MW-SS-FF-AAS method was considered suitable for Cd and Pb determination in food-contact polymers. The concentrations of Cd and Pb in the analyzed samples varied from
- Published
- 2021
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