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UniversidaddeCádiz
Instituto Universitario de Investigación Marina INMAR

UniversidaddeCádiz

Instituto Universitario de Investigación Marina INMAR
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Nuclear spectrometry. Measurement of alpha and beta emitters

Updated June 4, 2026
Posted June 4, 2026

The service for the measurement of gross alpha and beta emitters in all matrices offers the determination of tritium and radon in water, and the determination of 226Ra and 210Pb in all matrices.

The following equipment is available for these analyses: Measurement of alpha and beta emitters. Liquid scintillation detector Hidex 300 SL. Automatic scintillation reader. Alpha-beta separation option. Low-noise phototubes option. Characteristics: 425-201: Liquid Scintillation Counting – Multichannel Analysis. Direct measurement of beta efficiency through the triple-to-double coincidence ratio. Detection of beta emitters in LSC mode up to 2000 keV. Preset protocols: H-3, C-14, S-35, P-33, P-32, I-125, and Free (for simple photon counting). Counting efficiency 65% for H-3, > 90% for C-14 in unquenched samples – Counting efficiency 27% for H-3, with 8ml of aqueous solution + 12 ml AquaLight – Background < 10 CPM (<6CPM in empty chamber) – Counting rate up to 3,000,000 CPM, with MCA.

Service location: Nuclear spectrometry laboratory (Andalusian Centre for Marine Studies – CASEM, 2nd floor, pala A. Puerto Real University Campus, University of Cádiz).

For more information, please contact the research staff, Melquiades Casas Ruiz: melquiades.casas@uca.es

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