Nitrogen content determinations in different stages of thermal treatment involved in conversion of ammonium diuranate to uranium metal |
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Authors: | Komal C Shrivastava Geeta P Shelke |
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Institution: | 1.National Physical Laboratory,Teddington,UK;2.Chemistry Department,University of Surrey,Guildford,UK;3.Triskem International,Bruz,France |
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Abstract: | Accurate, low-level measurement of 226Ra in high volume water samples requires rapid pre-concentration and robust separation techniques prior to measurement in order to comply with discharge limits and drinking water regulations. This study characterises the behaviour of 226Ra and interfering elements on recently developed TK100 (Triskem International) extraction chromatography resin. Distribution coefficients over a range of acid concentrations are given, along with an optimised procedure that shows rapid pre-concentration and separation of 226Ra on TK100 resin is achievable for high volume (1 L) water samples without the need for sample pre-treatment. |
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