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Patra Kankan Sengupta Arijit Mishra R. K. Mittal V. K. Valsala T. P. Kaushik C. P. 《Journal of Radioanalytical and Nuclear Chemistry》2022,331(3):1473-1481
Journal of Radioanalytical and Nuclear Chemistry - Efficient and selective extraction of 137Cs and 90Sr from high level liquid waste (HLLW) is of utmost importance in the back end nuclear fuel... 相似文献
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N. L. Sonar Vaishali De V. Pardeshi Y. Raghvendra T. P. Valsala M. S. Sonavane Y. Kulkarni Raj Kanwar 《Journal of Radioanalytical and Nuclear Chemistry》2012,294(2):185-189
99Tc is one of the long lived fission product with high fission yield. From radioactive waste management point of view it is very much essential to evaluate the concentration of technetium in the radioactive liquid waste in order to finalise the treatment process to extract/isolate it from the stream which is discharged to the environment. For the estimation of 99Tc in the radioactive liquid waste stream, extraction of the stable complex of technetium-tetraphenyl arsonium chloride (TPAC) into chloroform followed by beta counting was studied. Various parameters like pH, time of equilibration, concentration of TPAC in chloroform, use of other solvent for extraction as well as interference of various other radionuclides present in the waste were also studied. The radioactive liquid waste being handled in plant contains high concentrations of salts in the form of sodium nitrate. Hence effect of salt concentration on the percentage extraction was also evaluated. The extraction behavior does not dependent on change in the pH of the solution. Almost 99.5% extraction was observed in the pH range of 1?C13.0. High concentration of salt is affecting the extraction. However, this can be taken care by diluting the radioactive waste. It takes almost 90?min time for maximum extraction. Presence of radionuclides like 137Cs, 90Sr are not interfering the extraction of 99Tc. However, 106Ru is getting slightly extracted along with 99Tc. The error due to 106Ru can be eliminated by taking gamma spectrum and deducting the activity from the total beta activity to get 99Tc activity. Nitrobenzene can be used for extraction of Tc?CTPAC complex in place of chloroform. 相似文献
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Kaviyarasi Renu Anirban Goutam Mukherjee Uddesh Ramesh Wanjari Sathishkumar Vinayagam Vishnu Priya Veeraraghavan Balachandar Vellingiri Alex George Ricardo Lagoa Kamaraj Sattu Abhijit Dey Abilash Valsala Gopalakrishnan 《Molecules (Basel, Switzerland)》2022,27(17)
Heavy metals and metalloids like cadmium, arsenic, mercury, and lead are frequently found in the soil, water, food, and atmosphere; trace amounts can cause serious health issues to the human organism. These toxic trace elements (TTE) affect almost all the organs, mainly the heart, kidney, liver, lungs, and the nervous system, through increased free radical formation, DNA damage, lipid peroxidation, and protein sulfhydryl depletion. This work aims to advance our understanding of the mechanisms behind lipid accumulation via increased free fatty acid levels in circulation due to TTEs. The increased lipid level in the myocardium worsens the heart function. This dysregulation of the lipid metabolism leads to damage in the structure of the myocardium, inclusive fibrosis in cardiac tissue, myocyte apoptosis, and decreased contractility due to mitochondrial dysfunction. Additionally, it is discussed herein how exposure to cadmium decreases the heart rate, contractile tension, the conductivity of the atrioventricular node, and coronary flow rate. Arsenic may induce atherosclerosis by increasing platelet aggregation and reducing fibrinolysis, as exposure interferes with apolipoprotein (Apo) levels, resulting in the rise of the Apo-B/Apo-A1 ratio and an elevated risk of acute cardiovascular events. Concerning mercury and lead, these toxicants can cause hypertension, myocardial infarction, and carotid atherosclerosis, in association with the generation of free radicals and oxidative stress. This review offers a complete overview of the critical factors and biomarkers of lipid and TTE-induced cardiotoxicity useful for developing future protective interventions. 相似文献
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Sonar N. L. Sen S. Thakur D. A. Mittal V. K. P.Valsala T. Sathe D. B. Bhatt R. B. 《Journal of Radioanalytical and Nuclear Chemistry》2022,331(2):739-746
Journal of Radioanalytical and Nuclear Chemistry - Typical Radioactive liquid waste with high alkalinity, high concentration of solvent degradation products along with high 134+137Cs content was... 相似文献
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Tin disulphide crystals have been grown by the physical vapour transport method and the electrical conduction mechanism in these crystals using MIM structures is reported. The conduction is found to be space charge limited. Trap concentration, trap depth, free carrier mobility and Fermi level etc. have been determined. Dependence of the current on temperature in the ohmic region gives an activation energy of 0.40 ± 0.05 eV. 相似文献
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Prakash Amrita Dhara Mishra R. K. Valsala T. P. Sharma V. Acharya R. Tyagi A. K. Pujari P. K. Kaushik C. P. 《Journal of Radioanalytical and Nuclear Chemistry》2021,328(2):519-526
Journal of Radioanalytical and Nuclear Chemistry - An attempt was made to increase the solubility of High Level liquid Waste (HLW), mainly Cr and Mo, by addition of P2O5 to sodium borosilicate... 相似文献
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Thakur D. A. Sonar N. L. Pabby Anil K. Valsala T. P. Sathe D. B. Bhatt R. B. 《Journal of Radioanalytical and Nuclear Chemistry》2021,330(3):811-820
Journal of Radioanalytical and Nuclear Chemistry - Low level radioactive liquid waste (LLW) obtained after treatment of Intermediate level radioactive waste (ILW) is highly alkaline and rich in... 相似文献
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Thakur D. A. Sonar N. L. Shukla R. Valsala T. P. Sathe D. B. Bhatt R. B. Tyagi A. K. 《Journal of Radioanalytical and Nuclear Chemistry》2022,331(7):2903-2909
Journal of Radioanalytical and Nuclear Chemistry - Low level radioactive liquid waste (LLW) contains various radioisotopes like 125Sb, 106Ru, 99Tc and traces of 137Cs, 134Cs, 90Sr. Chemical... 相似文献
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