Issue 5, 2023

Precise determination of 204Pb-based isotopic ratios in environmental samples by quadrupole inductively coupled plasma mass spectrometry

Abstract

The measurement of 204Pb-based isotopic ratios by quadrupole ICP-MS has been investigated. After multivariate optimization of the main operating conditions (sample uptake rate, spray chamber temperature, quadrupole voltages), the isotopic ratios were measured with an internal precision of ∼0.4% (% RSD, n = 12) at the Pb concentration of 1 μg L−1 and ∼0.2% at 10 μg L−1, close to the values usually reported for the measurement of major isotopes by quadrupole ICP-MS. The external precision was ∼0.3% (% RSD, n = 35) and the bias, after the correction of the isobaric overlapping of 204Hg on 204Pb, was lower than 2‰. The applicability of the developed method in the environmental field was demonstrated by the analysis of a time series of 84 atmospheric particulate samples collected from the Arctic and characterized by low Pb concentration, obtaining data in good agreement with the isotopic composition of airborne particulate deposited in central Greenland.

Graphical abstract: Precise determination of 204Pb-based isotopic ratios in environmental samples by quadrupole inductively coupled plasma mass spectrometry

Supplementary files

Article information

Article type
Paper
Submitted
22 Dec. 2022
Accepted
16 Marts 2023
First published
17 Marts 2023
This article is Open Access
Creative Commons BY license

J. Anal. At. Spectrom., 2023,38, 1057-1064

Precise determination of 204Pb-based isotopic ratios in environmental samples by quadrupole inductively coupled plasma mass spectrometry

M. Grotti, M. A. Vecchio, D. Gobbato, M. Mataloni and F. Ardini, J. Anal. At. Spectrom., 2023, 38, 1057 DOI: 10.1039/D2JA00424K

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements