Title: Production and Certification of Candidate Pb Delta-iCRMs ERM-3800 and ERM-3810 Series
Authors: PONZEVERA EmmanuelQUETEL ChristopheHENDRICKX FransFORTUNATO Giuseppino
Citation: JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY vol. 24 no. 4 p. 402-406
Publisher: ROYAL SOC CHEMISTRY
Publication Year: 2009
JRC Publication N°: JRC49068
ISSN: 0267-9477
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC49068
DOI: 10.1039/b821400j
Type: Articles in Journals
Abstract: This paper describes the preparation of a new type of Pb delta-isotopic Certified Reference Materials (delta-iCRMs). These materials, available in liquid form (Pb mass fraction ~ 100µg.g-1, 2 mL, 3% HNO3), are intended for the validation of delta-scale isotope ratio measurements. It comprises four pairs of a material with ~natural Pb-isotopic composition (ERM-3800, delta-0 material) and the same ~natural Pb progressively enriched in 207Pb (ERM-3810 series). For each pair relative differences in n(207Pb)/n(204Pb), n(207Pb)/n(206Pb) and n(207Pb)/n(208Pb) are certified for delta207Pb values ~ 0.01 per mille, 0.03 per mille, 0.05 per mille and 0.1 per mille. These delta-iCRMs were produced by gravimetric mixing for which relative uncertainties (~0.006% to 0.02%, k=2) allowed to guaranty no more than 0.1% (k=2) relative combined uncertainty for the reference values of delta207Pb.
JRC Institute:Institute for Reference Materials and Measurements

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