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Issue 7, 2008

Evolving Pb isotope signatures of London airborne particulate matter (PM10)—constraints from on-filter and solution-mode MC-ICP-MS

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Abstract

Pb isotope compositions of biologically significant PM10 atmospheric particulates from a busy roadside location in London UK were measured using solution- and laser ablation-mode MC-ICP-MS. The solution-mode data for PM10 sampled between 1998–2001 document a dramatic shift to increasingly radiogenic compositions as leaded petrol was phased out. LA-MC-ICP-MS isotope analysis, piloted on a subset of the available samples, is shown to be a potential reconnaissance analytical technique. PM10 particles trapped on quartz filters were liberated from the filter surface, without ablating the filter substrate, using a 266 nm UV laser and a dynamic, large diameter, low-fluence ablation protocol. The Pb isotope evolution noted in the London data set obtained by both analytical protocols is similar to that observed elsewhere in Western Europe following leaded petrol elimination. The data therefore provide important baseline isotope composition information useful for continued UK atmospheric monitoring through the early 21st century.

Graphical abstract: Evolving Pb isotope signatures of London airborne particulate matter (PM10)—constraints from on-filter and solution-mode MC-ICP-MS

Article information


Submitted
06 Feb 2008
Accepted
30 Apr 2008
First published
04 Jun 2008

J. Environ. Monit., 2008,10, 830-836
Article type
Paper

Evolving Pb isotope signatures of London airborne particulate matter (PM10)—constraints from on-filter and solution-mode MC-ICP-MS

S. R. Noble, M. S. A. Horstwood, P. Davy, V. Pashley, B. Spiro and S. Smith, J. Environ. Monit., 2008, 10, 830 DOI: 10.1039/B802151A

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