Imperial College London
Alternate

ProfessorDominikWeiss

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Environmental Geochemistry
 
 
 
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Contact

 

+44 (0)20 7594 6383d.weiss

 
 
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Location

 

2.39Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Khondoker:2018:10.1016/j.chemer.2018.05.001,
author = {Khondoker, R and Weiss, DJ and van, de Flierdt T and Rehkamper, M and Kreissig, K and Coles, BJ and Strekopytov, S and Humphreys-Williams, E and Dong, S and Bory, A and Bout-Roumazeilles, V and Smichowski, P and Cid-Agüero, P and Babinski, M and Losno, R and Monna, F},
doi = {10.1016/j.chemer.2018.05.001},
journal = {Chemie der Erde / Geochemistry},
pages = {372--384},
title = {New constraints on elemental and Pb and Nd isotope compositions of South American and Southern African aerosol sources to the South Atlantic Ocean},
url = {http://dx.doi.org/10.1016/j.chemer.2018.05.001},
volume = {78},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Improving the geochemical database available for characterising potential natural and anthropogenic aerosol sources from South America and Southern Africa is a critical precondition for studies aimed at understanding trace metal controls on the marine biogeochemical cycles of the South Atlantic Ocean. We here present new elemental and isotopic data for a wide range of sample types from South America and Southern Africa that are potentially important aerosol sources. This includes road dust from Buenos Aires and lichen samples from Johannesburg, soil dust from Patagonia, volcanic ash from the Andean volcanic belt, and aerosol samples from São Paulo. All samples were investigated for major (Al, Ca, Fe, Mg, Na, K, Mn) and trace element (Cd, Co, Cr, Cu, Ni, Pb, REE, Sc, Th, Y, V, Zn) concentrations and Nd and Pb isotopic compositions. We show that diagrams of 208Pb/207Pb vs. εNd, 208Pb/207Pb vs. Pb/Al, 1/[Pb], Zn/Al, Cd/Al, Cu/Al, and εNd vs. Pb/Al, and 1/[Nd] are best suited to separate South American and South African source regions as well as natural and anthropogenic sources. A subset of samples from Patagonia and the Andes was additionally subjected to separation of a fine (<5μm) fraction and compared to the composition of the bulk sample. We show that differences in the geochemical signature of bulk samples between individual regions and source types are significantly larger than between grain sizes. Jointly, these findings present an important step forward towards a quantitative assessment of aeolian trace metal inputs to the South Atlantic Ocean.
AU  - Khondoker,R
AU  - Weiss,DJ
AU  - van,de Flierdt T
AU  - Rehkamper,M
AU  - Kreissig,K
AU  - Coles,BJ
AU  - Strekopytov,S
AU  - Humphreys-Williams,E
AU  - Dong,S
AU  - Bory,A
AU  - Bout-Roumazeilles,V
AU  - Smichowski,P
AU  - Cid-Agüero,P
AU  - Babinski,M
AU  - Losno,R
AU  - Monna,F
DO  - 10.1016/j.chemer.2018.05.001
EP  - 384
PY  - 2018///
SN  - 0009-2819
SP  - 372
TI  - New constraints on elemental and Pb and Nd isotope compositions of South American and Southern African aerosol sources to the South Atlantic Ocean
T2  - Chemie der Erde / Geochemistry
UR  - http://dx.doi.org/10.1016/j.chemer.2018.05.001
UR  - http://hdl.handle.net/10044/1/60360
VL  - 78
ER  -
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