2025
ICP-QMS for lead isotopic analysis: Method development and key parameters
DOBEŠ, Jan; Markéta HOLÁ; Tomas FOJTIK; Ladislav STRNAD; Viktor KANICKÝ et. al.Basic information
Original name
ICP-QMS for lead isotopic analysis: Method development and key parameters
Authors
DOBEŠ, Jan (203 Czech Republic, belonging to the institution); Markéta HOLÁ (203 Czech Republic, belonging to the institution); Tomas FOJTIK; Ladislav STRNAD and Viktor KANICKÝ (203 Czech Republic, belonging to the institution)
Edition
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, OXFORD, PERGAMON-ELSEVIER SCIENCE LTD, 2025, 0584-8547
Other information
Language
English
Type of outcome
Article in a journal
Field of Study
10406 Analytical chemistry
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
is not subject to a state or trade secret
References:
Impact factor
Impact factor: 3.800 in 2024
Organization unit
Faculty of Science
UT WoS
001553114000001
EID Scopus
2-s2.0-105011393117
Keywords in English
Isotope ratio analysis; Lead isotopes; ICP-QMS; Optimization parameters
Tags
Tags
International impact, Reviewed
Changed: 8/9/2025 17:27, Mgr. Pavla Foltynová, Ph.D.
Abstract
In the original language
This technical note demonstrates the potential of inductively coupled plasma mass spectrometry with a quadrupole analyzer (ICP-QMS) for lead isotope ratio determination offering a step-by-step guide for laboratories aiming to achieve reliable precision without access to multi-collector instrumentation. Key instrumental parameters such as dwell time, number of replicates, sweeps per replicate, pump speed and nebulizer gas flow were systematically optimized. Special attention was given to the influence of detector mode selection (Auto vs. Analog) and its impact on low-abundance isotopes such as Pb-204. The optimized procedure yielded precision of 0.08-0.10 % RSD for Pb-206/Pb-207 and Pb-208/Pb-206 ratios and 0.10-0.12 % RSD for Pb-206/Pb-204 as a minimum, which is sufficient for selected applications. The optimized method was validated using NIST SRM 981 and archaeological metal samples previously analyzed by MC-ICP-MS. Results show good agreement in isotope ratios between ICP-QMS and MC-ICP-MS, with deviations expressed as delta values <0.3 % in most cases, for Pb-206/Pb-204 < 1.5 %. Although the method does not aim to replace MC-ICP-MS for high-precision work, it offers a robust and cost-effective alternative for applications requiring moderate precision, especially in laboratories without access to multi-collector instrumentation.