首页 | 本学科首页   官方微博 | 高级检索  
     


Concentration levels of major and trace elements in rice from sri lanka as determined by the k 0 standardization method
Authors:R. Jayasekera  M. C. Freitas
Affiliation:(1) Department of Botany, University of Kelaniya, Kelaniya, Sri Lanka;(2) Instituto Tecnológico e Nuclear (ITN), EN 10, P-2686-953 Sacavém, Portugal
Abstract:Instrumental neutron activation (INAA) with k 0 standardization has been used to determine the concentration levels of a variety of major and trace elements (Al, As, Br, Cd, Cl, Co, Cr, Cs, Cu, Fe, Hg, K, La, Mg, Mn, Mo, Na, Rb, Sc, Se, and Zn) in rice grains (raw and parboiled) and in rice flour collected from local markets in Sri Lanka. In addition, the energy-dispersive X-ray fluorescence (EDXRF) analysis has been used to determine the three elements Ca, P, and S in powdered samples. To evaluate and assure the accuracy and precision of the k 0 standardization method, the IAEA standard reference material V-8 rye flour was analyzed. The results obtained in the present investigation were compared with the results reported from other countries. All of the elements detected in the rice matrices from Sri Lanka were very low in concentration or within normal limits for food plants. Approximate daily dietary intakes of the individual elements supplied through rice were calculated and compared with the available literature values of daily allowances.
Keywords:INAA   k 0 standardization  neutron activation analysis  rice  trace elements
本文献已被 PubMed SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号