In particular, Cesium-137 (137 Cs) remains in the environment because of its long half-life (30.1 years). ... Carbon and nitrogen parameters were analyzed on all samples and a concentration-dependent distribution modelling approach was used to apportion source contributions.
high recoveries of cesium (98%) and the minimum detection sensitivity (100 pCi/L) that is required to evaluate individuals for exposures to radioactive cesium (Gautier 1983). …
Recently, technologies that can efficiently remove radioactive cesium (chiefly Cs-137) from water and soil have been actively researched. The study and evaluation of these removal technologies can be conducted using Cs-133, an easy-to-handle, stable substance, yet chemically similar to Cs-137. Cesium can be analyzed using atomic absorption …
Cesium-137 is used in small amounts for calibration of radiation detection equipment, such as Geiger- Mueller counters. In larger amounts, Cs-137 is used in: Medical radiation …
Cesium-137 is a byproduct of uranium-plutonium fission, a component of the fallout from H-bomb test explosions conducted by the U.S. and the Soviet Union at sites ranging from New Mexico and ...
Radioactive fallout 137Cs (cesium-137) deposited across the landscape from atmospheric nuclear tests is strongly absorbed on soil particles limiting its movement by chemical and biological processes.
On September 18, 1987, cesium-137 is removed from an abandoned cancer-therapy machine in Brazil. Hundreds of people were eventually poisoned by radiation from the substance, highlighting the...
Cesium-137 is a fission product of uranium and plutonium in nuclear reactors and is released in large quantities during nuclear explosions or detonation of an improvised device containing this isotope. This environmentally persistent radionuclide undergoes radioactive decay with the emission of beta particles as well as gamma radiation.
From May 1991, in order to prevent internal exposure to cesium-137 ((137)Cs) in the inhabitants of the Chechersk district of the Gomel region in the Republic of Belarus, which was an area highly contaminated by the Chernobyl accident, the author continuously measured internal(137)Cs accumulations within inhabitants of the district with a whole ...
We performed gamma-ray analysis to determine the amount of radioactive cesium-134 (134Cs) and cesium-137 (137Cs) in 259 foodstuffs five years after the Fukushima nuclear accident of 2011. Using ...
The FDA has certified that x-ray irradiators from two U.S. commercial manufacturers (Best Theratronics and Rad Source Technologies) are "substantially equivalent" to cesium-137 irradiators. X …
Cesium-137 (Cs-137) Radioisotope Brief. Toxicology FAQs. Frequently asked questions from the Agency for Toxic Substances & Disease Registry (ATSDR) The …
The samples were analyzed for 137Cs, K and creatinine. The ranges and average levels of these constituents in control urines are presented and discussed. The biological half life of 137Cs in children was determined to be 53 ± 12 days by means of urinary assay and whole-body counting of the control group. This half life value and the average ...
Cesium-137, other 2844.40.0021 Free Depletion Allowance: 14% (Domestic and foreign). Government Stockpile: None. Events, Trends, and Issues: Domestic cesium occurrences will likely remain uneconomic unless market conditions change. No known human health issues are associated with naturally occurring cesium, and its use has minimal
The 137 Cs concentration for the top 5 cm soil was about twice as that for the next 5 cm soil for both profiles. The soil profile adopted here is consistent with those reported elsewhere 57, 58....
CESIUM 159 7. ANALYTICAL METHODS ... 137. Cs are easily detected and quantitated using whole-body counting techniques (NCRP 1987; Palmer et al. 1976; Sun et al. 1997). Many configurations of the whole-body ... analyzed. Urinalysis is an optimum method for assessing the clearance of soluble cesium. Fecal analysis
[en] Japan Chemical Analysis Center has analyzed for strontium-90 and cesium-137 contents in processed-tea by the commission of Science and Technology Agency of Japanese Government. Tea smaples were collected by the prefectural Public Health Institutes and Laboratories of Shizuoka, Kyoto, and Kagoshima once a year.
samples. The cesium method was found to be more rapid and the results obtained more precise than those obtained using either the ammonium or the manganese method. Using the cesium method, an accurate measurement of the exchange capacity of two soil samples was obtained even when the sample analyzed weighed as little as 30 milligrams.
He shipped the samples to Stony Brook University, S.U.N.Y., where a colleague analyzed them for cesium levels. The two cesium isotopes decay at different rates. Cesium 137 has a half-life of 30.1 ...
In larger amounts, Cs-137 is used in medical radiation therapy devices for treating cancer; in industrial gauges that detect the flow of liquid through pipes; and in other …
137 Cs activities in mosses and substrate (soil, bark) collected from W. Macedonia, Greece were measured 20 years after the Chernobyl reactor accident. Archive material from previous studies was also used for comparison and diachronic estimation of the radio-contamination status. A gradual decrease was detected which depended on …
Cesium-137 is a byproduct of uranium-plutonium fission, a component of the fallout from H-bomb test explosions conducted by the U.S. and the Soviet Union at sites ranging from New Mexico and...
Then the author analyzed the relationships between the inhabitants' daily habits and their measured cesium levels. The author measured 137 Cs accumulation within 528 inhabitants and in agricultural produce in the Chechersk disrict.
CESIUM-137 MEASUREMENTS OF SPENT CST COLUMNS FROM THE SAVANNAH RIVER SITE TANK CLOSURE CESIUM REMOVAL (TCCR) PROJECT Full Record Related Research Authors: DIPRETE, DAVID P.; MCGRATH, CHRISTOPHER; JUDY, ADAM; AUCOTT, TIMOTHY J. + Show Author Affiliations Publication Date: Wed …
2.1– Cesium Concentrations and Variability Local or regional measurements of . 137. Cs are typically compared to baseline estimates of Cs concentrations world-wide which are …