Atmospheric mercury at mediterranean coastal stations |
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Authors: | Ingvar Wängberg John Munthe David Amouroux Maria E Andersson Vesna Fajon Romano Ferrara Katarina Gårdfeldt Milena Horvat Yaacov Mamane Ety Melamed Mathilde Monperrus Nives Ogrinc Osnat Yossef Nicola Pirrone Jonas Sommar Francesca Sprovieri |
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Institution: | 1. Environmental Effects & Atmospheric Chemistry, IVL, Swedish Environmental Research Institute, Aschebergsgatan 44, Goteborg, 40014, Sweden 2. Laboratoire Chimie Analytique Bio Inorganique Et Environnement (LCABIE), Université de Pau et des Pays de l’Adour, Pau, France 3. Department of Chemistry, G?teborg University, G?teborg, Sweden 4. Jo?ef Stefan Institute, Ljubljana, Slovenia 5. Institute of Biophysics of the National Research Council (CNR-IB), Pisa, Italy 6. Department of Civil Engineering, Israel Institute of Technology (TECHNION), Haifa, Israel 7. Institute for Atmospheric Pollution of the National Research Council (CNR_IIA), Rende, Italy
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Abstract: | Mercury in air has been measured at five coastal Mediterranean sites, involving measurements in Spain, France, Italy, Slovenia and
Israel. Four two-weeks long measurements campaigns were performed at the five sites. The measurements were carried out during
autumn 2003 and winter, spring and summer 2004. Total gaseous mercury/elemental gaseous mercury, particulate mercury and divalent
gaseous mercury were measured in parallel at the five sites. The activities constituted a subtask of the EU funded MERCYMS
research project, which also included Mediterranean Sea cruises where both mercury in air and water were measured. The result
from an evaluation of all the coastal air data is presented. Mercury concentrations from the different sites are compared
with similar data obtained in northern Europe and elsewhere. The result shows that the background concentration of mercury
in Mediterranean coastal air is lower than earlier anticipated. Background concentrations of TGM, RGM and TPM corresponded
to 1.75–1.80 ng m−3, 1–13 and 3–23 pg m−3, respectively. The measurements also showed that the mercury concentration occasionally can be very high in some areas due
to local anthropogenic emissions. It is proposed that diurnal variation in RGM concentrations observed during situation with
nocturnal inversion merely is an effect of meteorology rather than due to local photochemistry. |
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Keywords: | Atmospheric mercury Mercury deposition RGM TGM TPM |
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