{'fraction_non_alphanumeric': 0.018995929443690638, 'fraction_numerical': 0.008141112618724558, 'mean_word_length': 5.25, '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}}
Measuring technique for thermal ionisation mass spectrometry of human tracer kinetic study with stable cerium isotopes

This corrigendum refers to the publication: Keiser T, Höllriegl V, Giussani A, Oeh U. Measuring technique for thermal ionisation mass spectrometry of human tracer kinetic study with stable cerium isotopes. Isot Environ Health Stud. 2011;47:238–252. In that publication, a detection method using thermal ionisation mass spectrometry (TIMS) for the simultaneous detection of different cerium isotopes in biological samples (i.e. blood and urine) at very low concentrations was presented. Unfortunately, it has to be stated that a serious mistake in the evaluation procedure has been found, specifically in the approach used for correcting the signal interference due to barium. As a consequence and in contrast to the statements in the publication, the method described in the paper is not appropriate to detect cerium in biological samples because the measurements of the cerium signals are strongly affected by the contribution of barium in the sample. Due to its intensity, this contribution cannot be reliably subtracted even under consideration of the barium isobaric correction. We are currently working on the development of an alternative analytical method in order to overcome the problems regarding the barium contamination and to complete the study. We intend to present the results in a paper to be submitted to this journal in the near future.