AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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Authors: ANAMARIA IULIA TÖRÖK, CLAUDIU TĂNĂSELIA, ANA MOLDOVAN, BOGDAN ANGYUS, ERIKA ANDREA LEVEI, CECILIA ROMAN.
DOI: 10.24193/subbchem.2021.4.02
Published Online: 2021-12-30
Published Print: 2021-12-30
pp. 23-31
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Lead isotopic ratio determination is significantly affected by the isobaric interference of mercury (204Hg), thus many studies lack 204Pb/206Pb values. Removal of 204Hg from sample is resource consuming, while mathematical correction can be employed if the Hg isotope ratio in the sample is known. Triple quadrupole inductively coupled plasma mass spectrometry (TQ-ICP-MS) offers a mechanism for removing the 204Hg, by pressurizing the reaction cell with ammonia, that reacts with 204Hg positively charged ions rendering them neutral, thus filtering them out and removing them from the ion beam. The Pb isotope ratio determination can be used as fingerprint to identify the sources of contamination and environmental pollution. The method developed based on this mechanism was used for Pb isotopic ratio determination in cave sediment samples. Relative standard deviation of this method was between 0.36% - 0.59%.
Keywords: ICP-MS, Pb isotopic ratio, lead, cave sediments, triple-quadrupole
