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The sea-air exchange of mercury (Hg) in the marine boundary layer of the Augusta basin (southern Italy): concentrations and evasion flux.
Chemosphere. 2013 Nov; 93(9):2024-32.C

Abstract

The first attempt to systematically investigate the atmospheric mercury (Hg) in the MBL of the Augusta basin (SE Sicily, Italy) has been undertaken. In the past the basin was the receptor for Hg from an intense industrial activity which contaminated the bottom sediments of the Bay, making this area a potential source of pollution for the surrounding Mediterranean. Three oceanographic cruises have been thus performed in the basin during the winter and summer 2011/2012, where we estimated averaged Hgatm concentrations of about 1.5±0.4 (range 0.9-3.1) and 2.1±0.98 (range 1.1-3.1) ng m(-3) for the two seasons, respectively. These data are somewhat higher than the background Hg atm value measured over the land (range 1.1±0.3 ng m(-3)) at downtown Augusta, while are similar to those detected in other polluted regions elsewhere. Hg evasion fluxes estimated at the sea/air interface over the Bay range from 3.6±0.3 (unpolluted site) to 72±0.1 (polluted site of the basin) ng m(-2) h(-1). By extending these measurements to the entire area of the Augusta basin (~23.5 km(2)), we calculated a total sea-air Hg evasion flux of about 9.7±0.1 g d(-1) (~0.004 tyr(-1)), accounting for ~0.0002% of the global Hg oceanic evasion (2000 tyr(-1)). The new proposed data set offers a unique and original study on the potential outflow of Hg from the sea-air interface at the basin, and it represents an important step for a better comprehension of the processes occurring in the marine biogeochemical cycle of this element.

Authors+Show Affiliations

DiSTeM, University of Palermo, Via Archirafi 36, 90123 Palermo, Italy. Electronic address: emanuelabagnato@virgilio.it.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23932146

Citation

Bagnato, E, et al. "The Sea-air Exchange of Mercury (Hg) in the Marine Boundary Layer of the Augusta Basin (southern Italy): Concentrations and Evasion Flux." Chemosphere, vol. 93, no. 9, 2013, pp. 2024-32.
Bagnato E, Sproveri M, Barra M, et al. The sea-air exchange of mercury (Hg) in the marine boundary layer of the Augusta basin (southern Italy): concentrations and evasion flux. Chemosphere. 2013;93(9):2024-32.
Bagnato, E., Sproveri, M., Barra, M., Bitetto, M., Bonsignore, M., Calabrese, S., Di Stefano, V., Oliveri, E., Parello, F., & Mazzola, S. (2013). The sea-air exchange of mercury (Hg) in the marine boundary layer of the Augusta basin (southern Italy): concentrations and evasion flux. Chemosphere, 93(9), 2024-32. https://doi.org/10.1016/j.chemosphere.2013.07.025
Bagnato E, et al. The Sea-air Exchange of Mercury (Hg) in the Marine Boundary Layer of the Augusta Basin (southern Italy): Concentrations and Evasion Flux. Chemosphere. 2013;93(9):2024-32. PubMed PMID: 23932146.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The sea-air exchange of mercury (Hg) in the marine boundary layer of the Augusta basin (southern Italy): concentrations and evasion flux. AU - Bagnato,E, AU - Sproveri,M, AU - Barra,M, AU - Bitetto,M, AU - Bonsignore,M, AU - Calabrese,S, AU - Di Stefano,V, AU - Oliveri,E, AU - Parello,F, AU - Mazzola,S, Y1 - 2013/08/06/ PY - 2013/04/29/received PY - 2013/07/03/revised PY - 2013/07/08/accepted PY - 2013/8/13/entrez PY - 2013/8/13/pubmed PY - 2014/5/10/medline KW - Atmospheric mercury concentrations KW - Augusta basin KW - Gaseous elemental mercury KW - Marine boundary layer KW - Mercury evasion flux KW - Sea–air evasion SP - 2024 EP - 32 JF - Chemosphere JO - Chemosphere VL - 93 IS - 9 N2 - The first attempt to systematically investigate the atmospheric mercury (Hg) in the MBL of the Augusta basin (SE Sicily, Italy) has been undertaken. In the past the basin was the receptor for Hg from an intense industrial activity which contaminated the bottom sediments of the Bay, making this area a potential source of pollution for the surrounding Mediterranean. Three oceanographic cruises have been thus performed in the basin during the winter and summer 2011/2012, where we estimated averaged Hgatm concentrations of about 1.5±0.4 (range 0.9-3.1) and 2.1±0.98 (range 1.1-3.1) ng m(-3) for the two seasons, respectively. These data are somewhat higher than the background Hg atm value measured over the land (range 1.1±0.3 ng m(-3)) at downtown Augusta, while are similar to those detected in other polluted regions elsewhere. Hg evasion fluxes estimated at the sea/air interface over the Bay range from 3.6±0.3 (unpolluted site) to 72±0.1 (polluted site of the basin) ng m(-2) h(-1). By extending these measurements to the entire area of the Augusta basin (~23.5 km(2)), we calculated a total sea-air Hg evasion flux of about 9.7±0.1 g d(-1) (~0.004 tyr(-1)), accounting for ~0.0002% of the global Hg oceanic evasion (2000 tyr(-1)). The new proposed data set offers a unique and original study on the potential outflow of Hg from the sea-air interface at the basin, and it represents an important step for a better comprehension of the processes occurring in the marine biogeochemical cycle of this element. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/23932146/The_sea_air_exchange_of_mercury__Hg__in_the_marine_boundary_layer_of_the_Augusta_basin__southern_Italy_:_concentrations_and_evasion_flux_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(13)01009-6 DB - PRIME DP - Unbound Medicine ER -