|Year : 2015 | Volume
| Issue : 1 | Page : 1
Ex. BARC and Editor, Radiation Protection and Environment, Mumbai, India
|Date of Web Publication||14-Aug-2015|
Ex. BARC and Editor, Radiation Protection and Environment, Mumbai
Source of Support: Nil., Conflict of Interest: None
|How to cite this article:|
Pushparaja. Editorial. Radiat Prot Environ 2015;38:1
This is the first and combined issue of Radiation Protection and Environment (RPE, No. 1 and 2) of 2015.
There are six papers in this issue related to natural radioactivity in various samples, including rock samples collected from Dhanbad City of Jharkhand.
Primordial radionuclide, 40K, has a high transfer factor from soil to food chain and is present in traces in our diet and gets incorporated into the body. The dose due to the 40K varies from place to place. The dose contribution to the public from 40K is important from the considerations of epidemiological studies and environmental impact assessment to the member of public from natural radionuclides. However, it should be noted that the 1 mSv/y limit on effective dose to public, recommended by ICRP is from "man-made" radiation sources such as very low level effluent releases from nuclear facilities. Excluding natural background radiation dose.
One such study is reported from Kalpakkam, Tamil Nadu, by P. Basu et al.and the results are compared with those of the literature values. It is reported that rice consumption is the major route of intake in the site, and the maximum dose received through this route is 69 µSv/year.
Another study on natural radionuclides, viz. 226Ra, 232Th, and 40K, associated with soil, tailings, and water at the site of Bibiani gold mine, Ghana, is also reported. The dose to the public due to these concentrations is, however, not significant. One more paper from Jordan reports the concentrations of 226Ra, 228Ra, and 40K activities in some vegetables consumed in the country and resultant annual ingestion dose to the public.
Regular monitoring of radionuclides and heavy metals in milk samples is being emphasized to prevent excessive build-up of the toxic metals in the food item. A Nigerian study reports the concentrations of radionuclides and heavy metals in powdered milk samples to ensure their suitability for consumption. The data generated in the study are expected to provide assistance in the development of future guidelines in Nigeria for radiological protection of the population.
A paper from the Faculty of Science, South Valley University, Egypt, reports natural radionuclides, viz., 226Ra, 228Ra, and 40K, present in the environmental substances that have been used in pharmacy and medicine as health supplements.
Regulators require that the radiation workers in fuel reprocessing and fuel fabrication need to be monitored for assessing internal contamination of plutonium and americium. The bioassay technique involved analysis of fecal and urine samples using conventional alkali fusion and acid leaching methods. A new technique is reported in this issue involving acid leaching followed by hydrogen fluoride treatment, which achieved better recovery in the range of 43–90% with a mean of 70%. Pu and Am were separated by anion exchange method and by using TRU resin, respectively.
P. K. Sharma et al.have investigated motion management of lung tumors: A retrospective analysis, to see any dosimetric differences in different respiratory phases, and the results are reported.
There is a letter to the editor, in this issue, where Dr. Sankran uses commercially available smartphones, as an add-on device for the locally developed image viewer system, along with other medical imaging software.
In addition to this, we have the usual news and information, and an obituary to Dr. A. P. J. Abdul Kalam.