Single Particle Characterization and Total Elemental Concentration Measurements in Polar Ice Using Continuous Flow Analysis-Inductively Coupled Plasma Time-of-Flight Mass Spectrometry

Erhardt, Tobias; Jensen, Camilla M.; Borovinskaya, Olga; Fischer, Hubertus (2019). Single Particle Characterization and Total Elemental Concentration Measurements in Polar Ice Using Continuous Flow Analysis-Inductively Coupled Plasma Time-of-Flight Mass Spectrometry. Environmental science & technology, 53(22), pp. 13275-13283. ACS Publications 10.1021/acs.est.9b03886

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Continuous flow analysis (CFA) has become widely used for the measurement of aerosol-derived impurities in ice-core samples, resulting in high-resolution data sets of past aerosol deposition. Here, we present first results from coupling an inductively coupled plasma time-of-flight mass spectrometer (TOFMS) to a traditional CFA system. This setup enables the measurement of exactly coregistered elemental concentrations over the full mass range without degradation of sensitivity with an increasing number of analytes. The resulting total elemental concentration records have similar or better resolution than the established spectrophotometric methods. The unique capability of a TOFMS to measure fast transient signals and to still cover the full mass range furthermore enables the detection of the ionization of individual insoluble particles entering the plasma. The resulting mass spectra of the particles can be used to investigate the relative elemental composition of the mineral dust particles preserved in ice. The presented analysis of iron-bearing particles indicates that most of the particulate iron in Greenland ice is associated with Mg and Al and is likely part of clay minerals such as illite.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Climate and Environmental Physics
08 Faculty of Science > Physics Institute
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)

UniBE Contributor:

Erhardt, Tobias; Jensen, Camilla and Fischer, Hubertus

Subjects:

500 Science > 530 Physics
500 Science > 550 Earth sciences & geology

ISSN:

0013-936X

Publisher:

ACS Publications

Funders:

[42] Schweizerischer Nationalfonds

Projects:

[UNSPECIFIED] 206021_170739
[UNSPECIFIED] 200020_172506
[UNSPECIFIED] 20FI21_164190

Language:

English

Submitter:

Hubertus Fischer

Date Deposited:

13 Dec 2019 14:55

Last Modified:

13 Dec 2019 14:55

Publisher DOI:

10.1021/acs.est.9b03886

BORIS DOI:

10.7892/boris.136344

URI:

https://boris.unibe.ch/id/eprint/136344

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