Radionuclide Contamination Articles
-
Bioorthogonal Reactions in Radionuclide Conjugates
Bioorthogonal reactions are a series of chemical reactions that occur in biological environments with high yields, selectivity, efficiency, and no side reactions. These reactions include copper-catalyzed alkyne-azide cycloaddition (CuAAC), strain-promoted alkyne-azide cycloaddition, inverse electron demand Diels-Alder (IEDDA) reaction, and more. These bioorthogonal reactions find extensive ...
By BOC Sciences
-
How To Use A Fume Hood
Fume hoods are designed to keep laboratory professionals safe while working with hazardous materials. They filter the air to prevent the inhalation of toxic particles that can lodge in the lungs and cause serious health implications. In order for fume hoods to provide protection, users must follow basic safety practices. No matter how well a fume hood is designed, it won’t be effective ...
-
Nuclear decommissioning and isotope ratio mass spectrometry
I recently attended the 14th International Symposium on Nuclear and Environmental Radiochemical Analysis (aka ERA14, link here). I found this a fascinating insight into the breadth of applications where radiochemical measurements can help science. I’d naturally assumed the meeting would include major focus on nuclear forensics, but the additional focus on medical applications, fuel ...
By Isotopx Ltd
-
Federal Water Quality Maximum Contaminant Levels (MCLs)
Maximum Contaminant Levels (MCLs) represents the highest acceptable level of contaminants in drinking water. The unit used for MCLs is milligrams per litre (mg/L), which corresponds to parts per million (PPM). The Federal Water Quality Maximum Contaminant Levels (MCLs) are contained under the Safe Drinking Water Act (SDWA). MCLs are provided for a list of contaminants that include arsenic, ...
-
App Rx503 - Decontamination from radionuclides of condensates of evaporators at K503 nuclear power plant - Case Study
Processing of radioactive wastes leads to the formation of radioactive condensates of evaporators (debalance water) containing ammonia as the basic compound in the concentration of 7 - 25 mg/dm3 and having a pH value ranging 7.0 - 8.5. Besides, oils and other organic compounds are usually present in the water. RAXORB3/5, a granular (0.4 - 1.0 mm spheres) selective ion-exchanger, chemically ...
By Biomedy AG
-
Prj 9121 - Deactivation of radioactive water - Case Study
Although radioactive isotopes are engaged for many applications (i.e. medicine, metallurgy, etc.), the major sources of soil and water contamination with radioactive substances are connected to nuclear waste processing and to uranium mining operations. One of the principal carcinogens is plutonium and any soil or water contaminated by plutonium should be carefully removed and disposed in ...
By Biomedy AG
-
TEST RESULTS: atmospheric water is safe to drink
A certified lab has performed a test of a water sample obtained from one of Tsunami® atmospheric water generators. The testing was extremely thorough — the report that lists test results is 13 pages long, showing results with respect to more than 100 microbiological and chemical items. It shows that levels of Inorganic Chemicals, Synthetic & Volatile Organic Chemicals, Radionuclides ...
-
CBRN Water Monitors
WANTED: CBRN (Chemical, Biological, Radiological, Nuclear) Water Monitors A recent survey by Environmental Protection Agency personnel found that Technical Associates is currently the sole source, worldwide, to provide comprehensive instrumentation for real time monitoring of radionuclides, chemicals, and biological contaminants in drinking water and wastewater. Information on the complete CBRN ...
-
Good News for Drinking Water - US Nuclear Corp
Independent Test Lab Evaluates Instrumentation for Detecting Radiation in Drinking Water Since 9/11 and there are still holes in the security of the nation’s infrastructure, particularly for drinking water. This security deficit is currently being addressed in some community water systems with water monitoring instruments. In the 90s the EPA developed a wish list for monitoring ...
-
Measuring hydrogen off-gas in nuclear reactor - Case Study
Nuclear reactor coolant removal monitored by hydrogen measurements provided by Systech's 542 programmable gas analyzers NNC Limited is using Systech's 542 programmable gas analyzers to monitor hydrogen off-gas in test rig for Dounreay Fast Breeder Reactor decommissioning. Decommissioning nuclear reactors is not only a matter of dealing safely with the radioactivity issues, ...
-
Radioactivity and hydrochemical properties of certain thermal Turkish spa waters
The study aims to determine the radioactivity levels of thermal waters which have been used seasonally or permanently in spas for therapeutic intentions. Samples were collected from spas in different regions of Turkey. Some radionuclides (40K, 232Th, 226Ra, 137Cs), gross alpha (GA) and gross beta (GB) activities, and physical and some chemical parameters were measured. Gamma radiation ...
-
CEA LASE laboratory uses Kartotrak to map radionuclides difficult to measure
Problematics The autoradiography technique consists in depositing sensitive screens collecting the radiation on facility floors, ceilings or walls during different exposure times Screens are then scanned to produce 2D black and white tiff images with a resolution of a few microns. Color contrasts correspond to different values of radioactivity: The tiff images are processed by in-house ...
By Geovariances
-
Polyphosphates for in situ uranium immobilization - Case Study
INFORMATION Carus Corporation has a long history of developing and providing a variety of permanganate products for chemical oxidation applications. Carus is also a leading provider of phosphate products for sequestration and corrosion control. Phosphates are widely used as water treatment chemicals (dry or liquid solutions) to correct problems resulting from inorganic groundwater contaminants ...
-
Matrix Gemini LIMS meets radiological testing challenges case study
The inherent configurability of the Matrix Gemini Laboratory Information Management System (LIMS) has allowed the management of complex radiochemistry data at a radiological, environmental and analytical laboratory in Oak Ridge, Tennessee. The Matrix system has streamlined the analysis process and has added a very versatile reporting system. Background The laboratory carries out radioanalytical ...
-
Activity concentration and dose estimation of 226Ra, 232Th, 40K and 137Cs in drinking water of selected areas of Punjab, Pakistan
Radioactivity of naturally occurring (226Ra, 232Th and 40K) and anthropogenic (137Cs) radioactive nuclides was measured in 29 potable ground and surface water samples of Punjab, Pakistan. The results showed average activity concentrations for 226Ra, 232Th, 40K and 137Cs as 1.09, 0.55, 16.17 and 0.40 Bql−1, respectively. 137Cs was detected in only a few samples. The obtained results showed ...
-
Baseline groundwater quality in unconventional oil and gas fields
In recent years, expansion of unconventional oil and gas production has prompted significant interest in potential impacts on drinking water resources. In many cases, water quality investigations rely on access to landowner water wells to develop baseline data prior to drilling; respond to spills, complaints, or incidents; or evaluate potential impacts due to drilling, completion, hydraulic ...
-
Radionuclides in wastewater treatment plants: monitoring of Sicilian plants
Three Sicilian wastewater treatment plants were monitored to assess the occurrence and the behaviour of radionuclides. Two sampling campaigns (screening and long-term) were carried out during which liquid and solid samples have been analysed. It was found that 131I mostly occurred in the samples analysed during the screening campaign (43% of the analysed samples contained 131I). High ...
-
The Challenge: Perspectives and reflections on the public reaction to recent Fukushima‐related radionuclide studies, and a call for enhanced training in environmental radioactivity
In Response: An academic perspective Recent scientific publications addressing the release of radionuclides into the Pacific Ocean from the damaged Fukushima nuclear reactor in Japan, and in particular their bioaccumulation in marine fish (including some that have migrated to the west coast of United States), have received remarkable public interest and extensive media attention. Most concern ...
-
Calculation of the far range atmospheric transport of radionuclides after the Fukushima accident with the atmospheric dispersion model MATCH of the JRODOS system
The paper presents estimates of the far-range atmospheric dispersion of radionuclides after the accident at Fukushima Daiichi Nuclear Power Plant (NPP), obtained using the long-range atmospheric dispersion model MATCH. Software tools were developed to run MATCH in the EU nuclear emergency response system JRODOS using freely available numerical weather prediction (NWP) data of the Global ...
-
ANSI N13.1-2011 Stack Sampling Considerations
Background Nuclear facilities are required to follow industry standards for sampling stack effluents. Exposure of the general public to released radionuclides must be monitored as specified in US governmental regulations. The United States Environmental Protection Agency (USEPA) and the United States Nuclear Regulatory Commission (USNRC) have the authority over the monitoring of these releases. ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you