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Determination of 135Cs and 137Cs in environmental sample: a review.

Russell, B C; Croudace, I W*; Warwick, P E* (2015) Determination of 135Cs and 137Cs in environmental sample: a review. Anal. Chim. Acta, 890. pp. 7-20.

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Radionuclides of caesium are environmentally important since they are formed as significant high yield fission products (135Cs and 137Cs) and activation products (134Cs and 136Cs) during nuclear fission. They originate from a range of nuclear activities such as weapons testing, nuclear reprocessing and nuclear fuel cycle discharges and nuclear accidents. Whilst 137Cs, 134Cs and 136Cs are routinely measurable at high sensitivity by gamma spectrometry, routine detection of long-lived 135Cs by radiometric methods is challenging. This measurement is, however, important given its significance in long-term nuclear waste storage and disposal. Furthermore, the 135Cs/ 137Cs ratio varies with reactor, weapon and fuel type, and accurate measurement of this ratio can therefore be used as a forensic tool in identifying the source(s) of nuclear contamination. The shorter-lived activation products 134Cs and 136Cs have a limited application but provide useful early information on fuel irradiation history and have importance in health physics.

Item Type: Article
Keywords: Inductively coupled plasma-mass spectrometry, radiocaesium isotopes, nuclear forensics, nuclear waste, interference removal, chemical separation
Subjects: Ionising Radiation
Ionising Radiation > Radioactivity
Identification number/DOI: 10.1016/j.aca.2015.06.037
Last Modified: 02 Feb 2018 13:13
URI: http://eprintspublications.npl.co.uk/id/eprint/6819

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