TY - JOUR
A1 - Vogl, Jochen
A1 - Yim, Y.-H.
A1 - Lee, K.-S.
A1 - Goenaga-Infante, H.
A1 - Malinowskiy, D.
A1 - Ren, T.
A1 - Wang, J.
A1 - Vocke Jr., R.D.
A1 - Murphy, K.
A1 - Nonose, N.
A1 - Rienitz, O.
A1 - Noordmann, J.
A1 - Näykki, T.
A1 - Sara-Aho, T.
A1 - Ari, B.
A1 - Cankur, O.
T1 - Final report of the key comparison CCQM-K98: Pb isotope amount ratios in bronze
KW - CCQM
KW - Metrology
KW - Isotope amount ratios
KW - Lead
PY - 2014
UR - http://www.bipm.org/utils/common/pdf/final_reports/QM/K98/CCQM-K98.pdf
U6 - http://dx.doi.org/10.1088/0026-1394/51/1A/08017
SN - 0026-1394
SN - 1681-7575
VL - 51
IS - 1A Tech. Suppl.
SP - 08017-1
EP - 08017-47
PB - Inst. of Physics Publ.
CY - Bristol
AN - OPUS4-31929
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - RPRT
A1 - Vogl, Jochen
A1 - Yim, Y.-H.
A1 - Lee, K.-S.
A1 - Goenaga-Infante, H.
A1 - Malinovskiy, D.
A1 - Vocke, R. D.
A1 - Murphy, K.
A1 - Nonose, N.
A1 - Rienitz, O.
A1 - Noordmann, J.
A1 - Näykki, T.
A1 - Sara-Aho, T.
A1 - Ari, B.
A1 - Cankur, O.
T1 - CCQM-P134 Pb isotope amount ratios and delta-values in bronze
N2 - Isotope amount ratios (hereafter referred to as simply isotope ratios) are proving useful in an ever increasing array of applications that range from studies unravelling transport processes, to pinpointing the provenance of specific samples as well as trace element quantification by using isotope dilution mass spectrometry (IDMS). These expanding applications encompass fields as diverse as archaeology, food chemistry, forensic science, geochemistry, medicine and metrology. However, to be effective tools, the isotope ratio data must be reliable and traceable to enable the comparability of measurement.
The importance of traceability and comparability in isotope ratio analysis has already been recognized by the Inorganic Analysis Working Group (IAWG) within the CCQM. Three pilot studies have focused on the quality of isotope ratio determinations (P48 “U isotope ratios in urine”, P75 “stable isotopes in Methionine”, P105 “87Sr/86Sr in wine”). Moreover, isotope ratio measurements are fundamental to IDMS amount of substance determinations. For example, when Pb quantification using IDMS is undertaken, this requires the measurements of Pb isotope ratios. While the requirements for isotope ratio accuracy and precision in the case of of IDMS are generally quite modest, “absolute” Pb isotope ratio measurements for geochemical age dating and source rock characterization as well as forensic provenance and fingerprinting studies require Pb isotope ratio measurements of the highest quality. To support present and future CMCs on isotope ratio determinations, a Key Comparison was urgently needed. Therefore, it was decided at the IAWG meeting in Paris in April 2011 that a Key Comparison on the determination of Pb isotope ratios in a pure Pb solution and in a bronze sample should be organized and accompanied by a pilot study.
Measuring Pb isotope amount ratios in a pure Pb solution, while seemingly straight forward, rigorously tests the ability of analyst to correct for any instrumental effects (such as mass discrimination and blank correction) on the measured ratios. Pb, present in trace amounts in a metal matrix sample (e.g. Pb in bronze), provides a real world test of the whole chemical and instrumental procedure, from chemical separation and sample purification to analysis and subsequent correction of appropriate instrumental effects on the separated samples.
A suitable bronze material with a Pb mass fraction between 10 and 100 mg·kg-1 was available at BAM. A high purity solution of Pb with a mass fraction of approximately 100 mg·kg-1 was also available. By comparing the Pb isotope ratio results obtained for the bronze sample with the Pb isotope ratio results from the Pb solution, potential biases arising from the processing of the bronze sample could be effectively identified and separated from the instrumental effects arising from the measurement and data processing protocol.
KW - Isotope ratio
KW - Delta value
KW - Molar mass
KW - Measurement uncertainty
KW - Traceability
PY - 2017
UR - https://www.bipm.org/wg/CCQM/IAWG/Allowed/IAWG_Pilot_Studies/CCQM-P134.pdf
SP - 1
EP - 42
PB - BIPM (Bureau International des Poids et Mesures)
CY - Paris
AN - OPUS4-47709
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Vogl, Jochen
A1 - Yim, Y.-H.
A1 - Lee, K.-S.
A1 - Goenaga-Infante, H
A1 - Malinovskiy, D.
A1 - Hill, S.
A1 - Ren, T.
A1 - Wang, J.
A1 - Vocke, R. D.
A1 - Murphy, K. E.
A1 - Nonose, N.
A1 - Rienitz, O.
A1 - Noordmann, J.
T1 - Certification of ERM-EB400, the first matrix reference material for lead isotope amount ratios, and ERM-AE142, a lead solution providing a lead isotopic composition at the edge of natural variation
N2 - Lead isotope amount ratios are commonly used in diverse fields such as archaeometry, geochemistry and forensic science. Currently, five reference materials with certified lead isotope amount ratios are available, namely NIST SRM 981, 982 and 983, GBW-04442 and NMIJ 3681-a. Only NIST SRM 981 and NMIJ 3681-a have approximately natural isotopic compositions, and NIST SRM 981 is predominantly used for correcting mass discrimination/mass fractionation in the applied mass spectrometric procedures. Consequently, there is no other certified reference material available to be used for validation and/or quality control of the analytical procedures applied to lead isotope amount ratio measurements. To fill this gap, two new reference materials have been produced and certified for their lead isotope amount ratios. For both certified reference materials, complete uncertainty budgets have been calculated and SI traceability has been established. This provides the users with independent means for validating and verifying their analytical procedures and for conducting quality control measures. ERM-EB400 is a bronze material with a nominal lead mass fraction of 45 mg kg-1 and certified lead isotope amount ratios of n(206Pb)/n(204Pb) = 18.072(17) mol mol-1, n(207Pb)/n(204Pb) = 15.578(18) mol mol-1 and n(208Pb)/n(204Pb) = 38.075(46) mol mol-1 with the associated expanded uncertainties (k = 2) given in brackets. ERM-AE142 is a high-purity solution of lead in 2% nitric acid with a nominal mass fraction of 100 mg kg-1 and certified Pb isotope amount ratios of n(206Pb)/n(204Pb) = 21.114(17) mol mol-1, n(207Pb)/n(204Pb) = 15.944(17) mol mol-1 and n(208Pb)/n(204Pb) = 39.850(44) mol mol-1 with the associated expanded uncertainties (k = 2) given in brackets. Both materials are specifically designed to fall within the natural lead isotopic variation and to assist users with the validation and verification of their analytical procedures. Note that while one of these reference materials requires the chemical separation of Pb from its matrix (ERM-EB400), the other does not (ERM-AE142). As additional information, δ208/206PbNIST SRM981 values are provided for both materials. For ERM-AE142, a delta value of δ208/206PbNIST SRM981 = -28.21(30) ‰ was obtained, and for ERM-EB400, a delta value of δ208/206PbNIST SRM981 = -129.47(38) ‰ was obtained, with the associated expanded uncertainties (k = 2) given in brackets.
KW - Lead isotope variations
KW - Radiogenic isotopes
KW - Isotope reference material
KW - Metrology in chemistry
KW - Measurement uncertainty
PY - 2019
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000458275600002
U6 - http://dx.doi.org/10.1111/ggr.12253
SN - 1751-908X
SN - 1639-4488
VL - 43
IS - 1
SP - 23
EP - 37
PB - John Wiley & Sons
AN - OPUS4-47383
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - RPRT
A1 - Vogl, Jochen
A1 - Becker, Dorit
A1 - Koenig, Maren
A1 - Yim, Y.-H.
A1 - Lee, K.-S.
A1 - Goenaga-Infante, H.
A1 - Malinowskiy, D.
A1 - Hill, S.
A1 - Ren, T.
A1 - Wang, J.
A1 - Vocke, R. D.
A1 - Murphy, K.
A1 - Nonose, N.
A1 - Rienitz, O.
A1 - Noordmann, J.
T1 - Certification Report for the Isotopic Reference Materials ERM-AE142 and ERM-EB400
N2 - Lead (Pb) isotope amount ratios are commonly used in applications ranging from archaeology and forensic sciences to terrestrial and extra-terrestrial geochemistry. Despite their utility and frequency of use, only three certified isotope amount ratio reference materials are currently available for Pb: NIST SRMs 981, 982 and 983. Because SRM 981 has a natural Pb isotopic composition, it is mainly used for correcting instrumental mass discrimination or fractionation. This means that, at present, there are no other certified isotope reference materials with natural Pb isotopic composition that could be used for validating or verifying an analytical procedure involving the measurement of Pb isotope amount ratios.
To fill this gap, two new reference materials, both certified for their Pb isotopic composition, have been produced together with a complete uncertainty assessment. These new reference materials offer SI traceability and an independent means of validating or verifying analytical procedures used to produce Pb isotope amount ratio measurements.
ERM-EB400 is a bronze material containing a nominal Pb mass fraction of 45 mg/kg. ERM-AE142 is a high purity solution of Pb with a nominal mass fraction of 100 mg/kg. Both materials have been specifically produced to assist analysts in verifying or validating their analytical procedures. Note that while one of these reference materials requires the chemical separation of Pb from its matrix (ERM-EB400), the other does not (ERM-AE142). Details on the certification of these isotope reference materials are provided in this report.
KW - Lead isotopic composition
KW - Isotope ratio
KW - Reference material
KW - Mass spectrometry
PY - 2016
U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:b43-392060
SP - 1
EP - 16
PB - Bundesanstalt für Materialforschung und -prüfung (BAM)
CY - Berlin
AN - OPUS4-39206
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -
TY - JOUR
A1 - Hioki, A.
A1 - Nonose, N.
A1 - Liandi, M.
A1 - Jingbo, C.
A1 - Liuxing, F.
A1 - Chao, W.
A1 - Cho, K.H.
A1 - Suh, J.K.
A1 - Min, H.S.
A1 - Lim, Y.
A1 - Recknagel, Sebastian
A1 - Koenig, Maren
A1 - Vogl, Jochen
A1 - De Sena, R.C.
A1 - Dos Reis, L.A.
A1 - Borinsky, M.
A1 - Puelles, M.
A1 - Hatamleh, N.
A1 - Acosta, O.
A1 - Turk, G.
A1 - Rabb, S.
A1 - Sturgeon, R.
A1 - Methven, B.
A1 - Rienitz, O.
A1 - Jaehrling, R.
A1 - Konopelko, L.A.
A1 - Kustikov, Y.A.
A1 - Kozyreva, S.B.
A1 - Korzh, A.A.
T1 - Final report of the key coamparison CCQM-K88: Determination of lead in lead-free solder containing silver and copper
N2 - The CCQM-K88 key comparison was organized by the Inorganic Analysis Working Group of CCQM to test the abilities of the national metrology institutes to measure the mass fraction of lead in lead-free solder containing silver and copper. National Metrology Institute of Japan (NMIJ), National Institute of Metrology of China (NIM) and Korea Research Institute of Standards and Science (KRISS) acted as the coordinating laboratories. The participants used different measurement methods, though most of them used inductively coupled plasma optical emission spectrometry (ICP-OES) or isotope-dilution inductively coupled plasma mass spectrometry (ID-ICP-MS). Accounting for relative expanded uncertainty, comparability of measurement results was successfully demonstrated by the participating NMIs for the measurement of the mass fraction of lead in lead-free solder at the level of 200 mg/kg.
It is expected that metals at mass fractions greater than approximately 100 mg/kg in lead-free solder containing silver and copper can be determined by each participant using the same technique(s) employed for this key comparison to achieve similar uncertainties mentioned in the present report.
KW - CCQM
KW - Metrology
KW - IDMS
PY - 2013
U6 - http://dx.doi.org/10.1088/0026-1394/50/1A/08002
SN - 0026-1394
SN - 1681-7575
VL - 50
IS - 08002, 1A (Technical Supplement 2013)
SP - 1
EP - 19
PB - Inst. of Physics Publ.
CY - Bristol
AN - OPUS4-30457
LA - eng
AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER -