ICP-QMS for lead isotopic analysis: Method development and key parameters

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F25%3A10510531" target="_blank" >RIV/00216208:11310/25:10510531 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/25:00141957

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.3yxnM.jMa" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.3yxnM.jMa</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.sab.2025.107277" target="_blank" >10.1016/j.sab.2025.107277</a>

Jazyk výsledku

angličtina

Název v původním jazyce

ICP-QMS for lead isotopic analysis: Method development and key parameters

Popis výsledku v původním jazyce

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 (204)Pb. The optimized procedure yielded precision of 0.08-0.10 % RSD for (206)Pb/(207)Pb and (208)Pb/(206)Pb ratios and 0.10-0.12 % RSD for (206)Pb/(204)Pb 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 &lt;0.3 % in most cases, for Pb-206/Pb-204 &lt; 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.

Název v anglickém jazyce

ICP-QMS for lead isotopic analysis: Method development and key parameters

Popis výsledku anglicky

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 (204)Pb. The optimized procedure yielded precision of 0.08-0.10 % RSD for (206)Pb/(207)Pb and (208)Pb/(206)Pb ratios and 0.10-0.12 % RSD for (206)Pb/(204)Pb 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 &lt;0.3 % in most cases, for Pb-206/Pb-204 &lt; 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Spectrochimica Acta - Part B: Atomic Spectroscopy

ISSN

0584-8547

e-ISSN

1873-3565

Svazek periodika

232

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

107277

Kód UT WoS článku

001553114000001

EID výsledku v databázi Scopus

2-s2.0-105011393117