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The study aims to determine the concentrations of essential and toxic elements in various rice varieties using TXRF.

March 26, 2026X-Ray SpectrometryOpen Access

Multielemental Analysis in Rice Grains by Total Reflection X‐Ray Fluorescence

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This analysis quantifies toxic and essential elements in rice varieties, highlighting safety implications for consumers.

The study aims to determine the concentrations of essential and toxic elements in various rice varieties using TXRF.
28 rice samples were categorized into seven groups: white, parboiled white, brown, parboiled brown, red, black, and wild.
Elemental analysis was conducted using total reflection X-ray fluorescence (TXRF) with a Bruker S2 PICOFOX spectrometer.
Elemental concentrations of K, Ca, Ti, Cr, Mn, Fe, Ni, Cu, Zn, Br, As, and Rb were measured.
Black, red, and wild rice varieties contained higher concentrations of K, Ca, Cu, and Zn compared to white rice varieties.
Wild rice had the highest levels of Zn at 53.2 μg.g −1 and Cu at 8.6 μg.g −1.
Brown and red rice exhibited the highest arsenic concentrations, exceeding limits set by ANVISA and WHO.

Tsuyama et al. (2026) studied this question.

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