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GEOREF RECORD

Gaseous mercury flux measurements from two mine tailing sites in the Seal Harbour area of Nova Scotia

J. Dalziel and R. Tordon
Gaseous mercury flux measurements from two mine tailing sites in the Seal Harbour area of Nova Scotia
Geochemistry - Exploration, Environment, Analysis (September 2013) 14 (1): 17-24

Abstract

During August 2004, mercury (Hg) flux-rates from surface soil were measured at an abandoned gold mining site near Seal Harbour, Nova Scotia. The Hg amalgamation process, used to isolate gold, produced areas of Hg-laden mine tailings. Diurnal measurements of the soil surface exchange of gaseous Hg to the atmosphere and meteorological data from two tailing deposit sites are discussed. These sites have different mining histories resulting in differing levels of Hg in the surface soil (0.05 mu g g (super -1) - Site 1, 23 mu g g (super -1) - Site 2). Site 1 showed a maximum flux-rate during mid-day at 60 ng m (super -2) hr (super -1) , declining to c. 5 ng m (super -2) hr (super -1) during evening while Site 2 had a mid-day Hg flux-rate of 1292 ng m (super -2) hr (super -1) with levels of c. 300 ng m (super -2) hr (super -1) during the evening. Mercury flux from each site has continuous diurnal Hg evasion at the soil surface. Correlations of Hg flux-rate with soil temperature, air temperature and solar radiation were evident at both sites and an Arrhenius-type relation of Hg flux with soil temperature was also evident. Data from these sites were compared to flux experiments conducted at impacted and other non-impacted sites in Nova Scotia.


ISSN: 1467-7873
EISSN: 2041-4943
Serial Title: Geochemistry - Exploration, Environment, Analysis
Serial Volume: 14
Serial Issue: 1
Title: Gaseous mercury flux measurements from two mine tailing sites in the Seal Harbour area of Nova Scotia
Affiliation: Environment Canada, Air Quality Sciences, Dartmouth, NS, Canada
Pages: 17-24
Published: 20130927
Text Language: English
Publisher: Geological Society Publishing House, London, United Kingdom
References: 21
Accession Number: 2014-004149
Categories: Environmental geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables, sketch map
N45°10'07" - N45°10'07", W61°36'02" - W61°36'02"
N45°10'07" - N45°10'07", W61°36'00" - W61°36'00"
Source Note: Online First
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201404
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