Journal ArticleDOI
A comparison of three activation analysis methods for iodine determination in foodstuffs
TLDR
In this article, the nuclear reaction followed by separation of elemental iodine was used to achieve the lowest detection limit of 1 ng. g −1 for food items in terms of accuracy and precision.Abstract:
Activation analysis methods based on the nuclear reactions 127 I(n,γ ) 128 I, 127 I(n,2n)126I and 127 I(γ ,n)126 I were tested in terms ofdetection limits, accuracy and precision, and applicability for iodine determinationat various levels in foodstuffs. Both nondestructive and radiochemical modeswere employed using one of the two separation procedures developed (alkaline-oxidativefusion and iodine separation either by extraction of elemental iodine in chloroformor AgI precipitation). The lowest iodine detection limit of 1 ng . g —1 was achieved by employing the first nuclear reaction followedby separation of elemental iodine. Accuracy and precision of the proceduresdeveloped at largely different iodine levels were proved by analyses of biologicalreference materials having composition similar to that of various food items.read more
Citations
More filters
Journal ArticleDOI
Neutron activation analysis in the life sciences
TL;DR: In this article, the authors reviewed the development of methods for instrumental neutron activation analysis (INAA) and their applications in the life sciences, focusing on epithermal activation with reactor neutrons (ENAA), and the advantages of this technique in analysis of environmental objects.
Journal ArticleDOI
Review of analytical methods for the quantification of iodine in complex matrices.
TL;DR: A general review of iodine determination on a wide-ranging set of complex matrices is not available and no available technique fully fits the needs of developing countries; research into inexpensive reliable methods and instrumentation are needed.
Journal ArticleDOI
Assessment of iodine levels in the Pakistani diet.
Perveen Akhter,Perveen Akhter,Perveen Akhter,Khaleeq ur-Rehman,Khaleeq ur-Rehman,Khaleeq ur-Rehman,Saraj Din Orfi,Saraj Din Orfi,Saraj Din Orfi,Nasir Ahmad,Nasir Ahmad,Nasir Ahmad +11 more
TL;DR: The iodine content of the Pakistani diet is significantly lower than the intakes recommended by the U.S. Food and Nutrition Board and the International Commission of Radiological Protection Board, and the iodine intake of theistani population needs to be improved substantially.
Journal ArticleDOI
Comparison of the role of photon and neutron activation analyses for elemental characterization of geological, biological and environmental materials
TL;DR: In this article, the potential of photon activation analysis (PAA) for multielement trace analysis can hardly compare with that of NAA for the determination of a number of elements, namely C, N, O, F, Mg, Si, Ca, Ti, Ni, Sr, Y, Zr, Nb, Sn, Tl and Pb.
Journal ArticleDOI
Estimation of iodine in food, food products and salt using ENAA
P.R. Bhagat,Raghunath Acharya,A. G. C. Nair,Ashok K. Pandey,Nilima S. Rajurkar,A. V. R. Reddy +5 more
TL;DR: An epithermal neutron activation analysis (ENAA) method using boron carbide filter was standardised for the determination of low levels of iodine in various food and food products like milk, milk powder, baby food and health drink powders as discussed by the authors.
References
More filters
Patent
Neutron activation analysis
M. Borsaru,Peter L. Eisler +1 more
TL;DR: In this paper, high energy neutron irradiation of the sample, measurement of the thermal neutron flux in the sample and monitoring the gamma radiation from the sample at energies of (a) 1.78 MeV and (b) 0.844 MEV and/or 1.015 MeV.
Journal ArticleDOI
G. Erdtmann: Neutron Activation Tables. Verlag Chemie, Weinheim, New York 1976. 146 S., Preis: DM 78.‐
Journal ArticleDOI
Microwave acid digestion and preconcentration neutron activation analysis of biological and diet samples for iodine.
Raghunadha R. Rao,Amares Chatt +1 more
TL;DR: A simple preconcentration neutron activation analysis (PNAA) method has been developed for the determination of low levels of iodine in biological and nutritional materials and total diet samples.
Related Papers (5)
Limits for qualitative detection and quantitative determination. application to radiochemistry.
Microwave acid digestion and preconcentration neutron activation analysis of biological and diet samples for iodine.
Raghunadha R. Rao,Amares Chatt +1 more