A simple and reliable monitoring system for 3H and 14C in radioactive airborne effluent
| Autor: | Satoshi Mikami, Kiyomitsu Akiyama, Minoru Takeishi, Hirohide Kobayashi, Jun Koarashi |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Waste management
Chemistry Health Toxicology and Mutagenesis Liquid scintillation counting Public Health Environmental and Occupational Health Sampling (statistics) Monitoring system Pollution Analytical Chemistry Nuclear facilities Sampling system Nuclear Energy and Engineering Environmental chemistry Radiology Nuclear Medicine and imaging Sample preparation Effluent Spectroscopy Cold trap |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 268:475-479 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | A simple and reliable sampling system for 3H and 14C in airborne release from nuclear facilities was designed. The sampling system can collect 3H and 14C simultaneously with a condensation technique using a commercially available cold trap equipment and a CO2 absorption technique using an organic alkali monoethanolamine solution, respectively. In situ performance tests for the effluent from a reprocessing plant showed that the system has high and stable efficiencies for collecting 3H and 14C for a one-week batch sampling at a sampling flow rate of 0.4 l . min-1. These collection techniques also provided a simple procedure of following sample preparation for activity measurements by liquid scintillation counting. The detectable concentrations of the proposed monitoring method were 3.0 Bq . m-3 for 3H and 1.6 Bq . m-3 for 14C, respectively. The sensitivity would be on an acceptable level for routine monitoring of airborne release at nuclear facilities. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|