Abstract:
:Instrumental neutron activation (INAA) with k0 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 k0 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.
journal_name
Biol Trace Elem Resjournal_title
Biological trace element researchauthors
Jayasekera R,Freitas MCdoi
10.1385/BTER:103:1:083subject
Has Abstractpub_date
2005-01-01 00:00:00pages
83-96issue
1eissn
0163-4984issn
1559-0720pii
BTER:103:1:083journal_volume
103pub_type
杂志文章abstract::A microcomputer-controlled irradiation and measurement system and a microprocessor-controlled sample changer have been installed at the SLOWPOKE-2 Facility at the Royal Military College of Canada (RMC). These systems can provide the gamut of instrumental neutron activation analysis (INAA) techniques for the analyst. C...
journal_title:Biological trace element research
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journal_title:Biological trace element research
pub_type: 杂志文章
doi:10.1007/s12011-014-0144-z
更新日期:2014-12-01 00:00:00
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更新日期:2004-01-01 00:00:00
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journal_title:Biological trace element research
pub_type: 杂志文章
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abstract::Rare earth elements (REEs) have been widely used to increase accumulation of biomass and secondary metabolites in medicinal plants in China. However, very few studies have investigated how REEs mediate secondary metabolism synthesis in medicinal plants. Lanthanum (La), an important REE, is known to improve the accumul...
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