{'fraction_non_alphanumeric': 0.02030456852791878, 'fraction_numerical': 0.028426395939086295, 'mean_word_length': 5.1625, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Implementation of a Sequential Injection Pre-Treatment Method for Simultaneous Radium and Strontium Determination

A semi-automatic procedure for the simultaneous determination of Ra and Sr in two steps has been developed. In the first step, separation and pre-concentration of both analytes is performed by using a sequential injection procedure. In the second step, the activities of 226Ra and 90Sr, alpha and beta emitters, respectively, are determined using a low background proportional counter at the corresponding plateau potentials. 226Ra concentration is obtained by a single measurement of the precipitate. 90Sr activity is determined by means of its daughter 90Y carrying out two different measurements along the first day after the separation process; the solution of the Bateman radioactivity decay equations allows to obtain the initial 90Sr-90Y activities. The activities analysed in the present work have been ranged between 0-14 Bq/L for 226Ra and 0-175 Bq/L for 90Sr.