|Author||Sahoo, S. K.|
|Publisher||Indian J. Phys.|
|Subject Domain (in DDC)||Natural sciences & mathematics ♦ Physics|
|Subject Keyword||Soil ♦ 234U ♦ 235U ♦ 236U ♦ 238U ♦ DU ♦ ICP-MS ♦ TIMS|
|Abstract||Actinides have widely entered the environment as a result of nuclearaccidents and atmospheric weapon testing. These radionuclides, especially uranium,are outstanding radioactive pollutants, due to their high radiotoxicity and longhalf-lives. In addition to this, since depleted uranium (DU) has been used in theBalkan conflict in 1999, there has been a concern about the possible consequences ofits use for the people and environment. Therefore, accurate, precise and simpledetermination methods are necessary in order to evaluate the human dose and theconcentration and effects of these nuclides in the environment. The principalisotopes of uranium e.g.235U and 238U are of primordial origin and 234U present inradioactive equilibrium with 238U. 236U occurs in nature at ultra traceconcentrations with a 236U : 238U atom ratio of 10–14. Concentrations of uranium insoil samples were determined using inductively coupled plasma mass spectrometry(ICP-MS) and isotope ratios of uranium were measured using a thermal ionisation massspectrometer. Radioactive dis-equilibrium of 234U.238U, depletion of 235U.238U andsignificant evidence of 236U.238U were noticed in soil samples.|
|Education Level||UG and PG|
|Learning Resource Type||Article|
|Journal||Indian J Phys|
Ministry of Human Resource Development (MHRD) under its National Mission on Education through Information and Communication Technology (NMEICT) has initiated the National Digital Library of India (NDLI) project to develop a framework of virtual repository of learning resources with a single-window search facility. Filtered and federated searching is employed to facilitate focused searching so that learners can find out the right resource with least effort and in minimum time. NDLI is designed to hold content of any language and provides interface support for leading vernacular languages, (currently Hindi, Bengali and 9 other languages are available). It is designed to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is being developed to help students to prepare for entrance and competitive examinations, to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is being developed at Indian Institute of Technology Kharagpur.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Human Resource Development (MHRD), through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
For any issue or feedback, please write to firstname.lastname@example.org