Document Type

Article

Publication Date

1993

DOI

10.1029/93JD01689

Publication Title

Journal of Geophysical Research: Atmospheres

Volume

98

Issue

D9

Pages

16777-16786

Abstract

The concentrations of antimony, arsenic, and selenium were determined in wet deposition samples collected on a daily (event) basis from 1988 to 1990 on Bermuda as a part of the Atmosphere/Ocean Chemistry Experiment (AEROCE). Isentropic back trajectories were used to identify air masses that passed over North America (59% of the events), Europe or North Africa (8%), or were largely marine in origin (33% of the events). The North American trajectories had the highest volume-weighted average (VWA) concentrations and crustal enrichment factors for the three metalloids; the As/Se ratio and good correlations with acidity suggest inputs from fossil fuel combustion. The Euro-African trajectories had the lowest VWA concentrations and enrichment factors that approached crustal values, indicating mineral aerosol inputs; values for marine events fell between these two extremes. The atmospheric flux of metalloids to the western Atlantic Ocean represents a major source of these elements in surface waters (up to 100% for Sb and Se; up to 61% for As) and a corresponding sink in their global atmospheric budgets.

Original Publication Citation

Cutter, G.A. (1993). Metalloids in wet deposition on Bermuda: Concentrations, sources, and fluxes. Journal of Geophysical Research: Atmospheres (1984–2012), 98(D9), 16777-16786. doi: 10.1029/93JD01689

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