Abstract
Total Se content in rice is normally low and it is difficult to determine it exactly because of Se volatilization and pollution during the digestion process. In this method, rice sample is digested thoroughly and Se volatilization is reduced greatly by designing a specific digestion tube, increasing digestion temperature by three steps, controlling the amount of mixed acid and adjusting the location of digestion tube in the digestion furnace. Se pollution is also reduced greatly by specific cleaning treatments.
Materials and Reagents
Equipment
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Acknowledgments
This work has been published in Zhang et al. (2014). The work was supported by the 43rd China Postdoctoral Science Foundation (No: 20080430588), the talent foundation (No: 09001107) and research foundation from Henan University of Science and Technology (No: 13560036). We thank Hongzhi Zhang (Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences) for selenium content analysis using ICP-MS.
References
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