Journal
SOIL SCIENCE AND PLANT NUTRITION
Volume 57, Issue 1, Pages 19-28Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00380768.2010.548313
Keywords
bromine; halogens; ICP-MS; iodine; polarizing EDXRF
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Funding
- Aomori Prefectural Government, Japan
- Grants-in-Aid for Scientific Research [22246115] Funding Source: KAKEN
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A non-destructive analysis method for total bromine (Br) and iodine (I) contents in soil was established using polarizing energy-dispersive X-ray fluorescence (EDXRF) spectrometry. The matrix-corrected intensity of Br and I K X-rays from pressed pellets of soil powder samples was calibrated with their contents measured by inductively coupled plasma (ICP)-mass spectrometry after pyrohydrolysis preparation. The calibration curves for Br and I were successfully obtained in the concentration ranges 3.8-223 mg kg-1 and 0.91-54 mg kg-1 respectively. Repeated analyses of the same sample with polarizing EDXRF spectrometry within one day and after approximately 1.5 years showed good reproducibility of the measurement results. The lower limits of detection for Br and I were 0.14 mg kg-1and 0.34 mg kg-1 respectively. The established analytical method for total Br and I contents in soil is non-destructive, simple and rapid, and is suitable for routine analysis. Trace elements such as rubidium (Rb), strontium (Sr), yttrium (Y), zirconium (Zr), niobium (Nb), cadmium (Cd), tin (Sn), antimony (Sb), caesium (Cs), barium (Ba), light rare earth elements and lead (Pb) were also measurable simultaneously under the identical operational conditions as those for Br and I measurements.
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