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Levels and Sources of Atmospheric Particle-Bound Mercury in Atmospheric Particulate Matter (PM10) at Several Sites of an Atlantic Coastal European Region

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Grupo Química Analítica Aplicada (QANAP), Department of Chemistry, Faculty of Sciences, University of A Coruña, Campus de A Coruña, s/n. 15071–A Coruña, Spain
2
University Institute of Research in Environmental Studies (IUMA), University of A Coruña, Pazo de Lóngora, 15179, Liáns, Oleiros–A Coruña, Spain
3
Centro de Investigaciones Científicas Avanzadas (CICA), University of A Coruña, Campus de Elviña, s/n. 15008–A Coruña, Spain
*
Author to whom correspondence should be addressed.
Atmosphere 2020, 11(1), 33; https://doi.org/10.3390/atmos11010033
Received: 25 November 2019 / Revised: 20 December 2019 / Accepted: 23 December 2019 / Published: 27 December 2019
(This article belongs to the Special Issue Urban Atmospheric Aerosols: Sources, Analysis and Effects)
Atmospheric particle-bound mercury (PHg) quantification, at a pg m−3 level, has been assessed in particulate matter samples (PM10) at several sites (industrial, urban and sub-urban sites) of Atlantic coastal European region during 13 months by using a direct thermo-desorption method. Analytical method validation was assessed using 1648a and ERM CZ120 reference materials. The limits of detection and quantification were 0.25 pg m−3 and 0.43 pg m−3, respectively. Repeatability of the method was generally below 12.6%. PHg concentrations varied between 1.5–30.8, 1.5–75.3 and 2.27–33.7 pg m−3 at urban, sub-urban and industrial sites, respectively. PHg concentration varied from 7.2 pg m−3 (urban site) to 16.3 pg m−3 (suburban site) during winter season, while PHg concentrations varied from 9.9 pg m−3 (urban site) to 19.3 pg m−3 (suburban site) during the summer. Other trace elements, major ions, black carbon (BC) and UV-absorbing particulate matter (UV PM) was also assessed at several sites. Average concentrations for trace metals (Al, As, Bi, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Sb, Si, Sr, V and Zn) ranged from 0.08 ng m−3 (Bi) at suburban site to 1.11 µg m−3 (Fe) at industrial site. Average concentrations for major ions (including Na+, K+, Ca2+, NH4+, Mg2+, Cl, NO3 and SO42−) ranged from 200 ng m−3 (K+) to 5332 ng m−3 (SO42−) at urban site, 166 ng m−3 (Mg2+) to 4425 ng m−3 (SO42−) at suburban site and 592 ng m−3 (K+) to 5853 ng m−3 (Cl) at industrial site. Results of univariate analysis and principal component analysis (PCA) suggested crustal, marine and anthropogenic sources of PHg in PM10 at several sites studied. Toxicity prediction of PHg, by using hazard quotient, suggested no non-carcinogenic risk for adults. View Full-Text
Keywords: atmospheric particle-bound mercury; atmospheric particulate matter; sources contributions; Atlantic coastal European region; toxicity prediction atmospheric particle-bound mercury; atmospheric particulate matter; sources contributions; Atlantic coastal European region; toxicity prediction
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Moreda-Piñeiro, J.; Rodríguez-Cabo, A.; Fernández-Amado, M.; Piñeiro-Iglesias, M.; Muniategui-Lorenzo, S.; López-Mahía, P. Levels and Sources of Atmospheric Particle-Bound Mercury in Atmospheric Particulate Matter (PM10) at Several Sites of an Atlantic Coastal European Region. Atmosphere 2020, 11, 33.

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