Summary
This paper presents and validates a microwave-assisted acid digestion procedure using diluted nitric acid as a sample preparation technique for the multi-element analysis of rice by ICP OES. The study likely demonstrates that the simplified, lower-acid approach achieves comparable accuracy and precision to conventional concentrated-acid digestion methods, offering potential advantages in terms of reagent consumption, cost, and analyst safety. The work contributes to analytical food chemistry by providing a validated protocol for routine mineral profiling of rice, a globally significant staple crop.
UK applicability
The analytical method developed is directly applicable to UK food testing laboratories and regulatory bodies monitoring mineral content in rice and other cereal grains. While the study was likely conducted in Brazil, the ICP OES methodology and validated digestion protocol are internationally transferable and relevant to UK food safety and nutrient composition monitoring programmes.
Key measures
Mineral element concentrations (mg/kg or µg/g); method recovery (%); limits of detection and quantification; precision (RSD %)
Outcomes reported
The study evaluated a microwave-assisted digestion method using diluted nitric acid for the determination of mineral elements in rice samples by inductively coupled plasma optical emission spectrometry (ICP OES). It likely assessed method accuracy, precision, recovery rates, and limits of detection for key macro- and micronutrients.
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