Portable x-ray fluorescence for assessing trace elements in rice and rice products: Comparison with inductively coupled plasma-mass spectrometry

Portable x-ray fluorescence (XRF) was investigated as a means of assessing trace elements in rice and rice products. Using five measurement trials of 180s real time, portable XRF was first used to detect arsenic (As), manganese (Mn), iron (Fe), nickel (Ni), copper (Cu), and zinc (Zn) in a variety of...

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Bibliographic Details
Published in:Applied radiation and isotopes 2015-10, Vol.104, p.217-223
Main Authors: Fleming, David E.B., Foran, Kelly A., Kim, Jong Sung, Guernsey, Judy R.
Format: Article
Language:English
Subjects:
Arsenic
Copper
Equipment Design
Equipment Failure Analysis
Food Analysis - instrumentation
Food Contamination - analysis
Iron
Manganese
Mass Spectrometry - instrumentation
Metals - analysis
Miniaturization
Nickel
Oryza - chemistry
Portable x-ray fluorescence
Reproducibility of Results
Rice
Rice products
Sensitivity and Specificity
Spectrometry, X-Ray Emission - instrumentation
Zinc
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Summary:Portable x-ray fluorescence (XRF) was investigated as a means of assessing trace elements in rice and rice products. Using five measurement trials of 180s real time, portable XRF was first used to detect arsenic (As), manganese (Mn), iron (Fe), nickel (Ni), copper (Cu), and zinc (Zn) in a variety of rice samples. The same samples were then microwave-digested and used to determine elemental concentrations using inductively coupled plasma-mass spectrometry (ICP-MS). The concentrations of As, Mn, Fe, Cu, and Zn determined by ICP-MS were found to be consistent with other recent studies involving various types of rice and rice products. When assessing for As, Mn, Fe, Cu, and Zn, comparison of results between XRF amplitude and ICP-MS concentration (wet weight) demonstrated a linear relationship with a significant correlation. A significant correlation between XRF amplitude and ICP-MS concentration was not found when assessing for Ni. •Portable x-ray fluorescence (XRF) used to assess trace elements in rice and rice products.•Same samples tested for concentrations using inductively coupled plasma-mass spectrometry (ICP-MS).•Linear relationship with significant correlation found between XRF amplitude and ICP-MS concentration.
ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2015.07.014