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Impact of the SARS-CoV-2 lockdown measures in Southern Spain on PM10 trace element and gaseous pollutant concentrations.
Millán-Martínez, María; Sánchez-Rodas, Daniel; Sánchez de la Campa, Ana M; de la Rosa, Jesús.
  • Millán-Martínez M; Associate Unit CSIC-University of Huelva "Atmospheric Pollution", Center for Research in Sustainable Chemistry - CIQSO, University of Huelva, E21071, Huelva, Spain; Department of Chemistry, Faculty of Experimental Sciences, University of Huelva, Campus El Carmen s/n, 21071, Huelva, Spain. Electronic
  • Sánchez-Rodas D; Associate Unit CSIC-University of Huelva "Atmospheric Pollution", Center for Research in Sustainable Chemistry - CIQSO, University of Huelva, E21071, Huelva, Spain; Department of Chemistry, Faculty of Experimental Sciences, University of Huelva, Campus El Carmen s/n, 21071, Huelva, Spain.
  • Sánchez de la Campa AM; Associate Unit CSIC-University of Huelva "Atmospheric Pollution", Center for Research in Sustainable Chemistry - CIQSO, University of Huelva, E21071, Huelva, Spain; Department of Earth Science, Faculty of Experimental Sciences, University of Huelva, Campus El Carmen s/n, 21071, Huelva, Spain.
  • de la Rosa J; Associate Unit CSIC-University of Huelva "Atmospheric Pollution", Center for Research in Sustainable Chemistry - CIQSO, University of Huelva, E21071, Huelva, Spain; Department of Earth Science, Faculty of Experimental Sciences, University of Huelva, Campus El Carmen s/n, 21071, Huelva, Spain.
Chemosphere ; 303(Pt 1): 134853, 2022 Sep.
Article in English | MEDLINE | ID: covidwho-1889281
ABSTRACT
Trace element concentrations within PM10, gaseous pollutants (NO2 and SO2), and PM10 levels were studied during the Covid-19 lockdown at a regional level in Southern Spain (Andalusia). Pollutant concentrations were compared considering different mobility periods (pre-lockdown, lockdown, and relaxation) in 2020 and previous years (2013-2016). An acute decrease in NO2 levels (<50%) was observed as a consequence of traffic diminution during the confinement period. Moreover, a lower reduction in PM10 levels and a non-clear pattern for SO2 levels were observed. During the lockdown period, PM10 elements released from traffic emissions (Sn and Sb) showed the highest concentration diminution in the study area. Regarding the primary industrial sites, there were no significant differences in V, Ni, La, and Cr concentration reduction during 2020 associated with industrial activity (stainless steel and oil refinery) in Algeciras Bay. Similarly, concentrations of Zn showed the same behaviour at Cordoba, indicating that the Zn-smelter activity was not affected by the lockdown. Nevertheless, stronger reductions of Cu, Zn, and As in Huelva during the confinement period indicated a decrease in the nearby Cu-smelter emissions. Brick factories in Bailen were also influenced by the confinement measures, as corroborated by the marked decrease in concentrations of Ni, V, Cu, and Zn during the lockdown compared to that from previous years. This work has shown the baseline concentrations of trace elements of PM10, which is of great value to air quality managers in order to minimise pollution levels by applying the confinement of the population, affecting both traffic and industrial anthropogenic activities.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Trace Elements / Air Pollutants / Air Pollution / Environmental Pollutants / COVID-19 Type of study: Experimental Studies / Observational study Limits: Humans Country/Region as subject: Europa Language: English Journal: Chemosphere Year: 2022 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Trace Elements / Air Pollutants / Air Pollution / Environmental Pollutants / COVID-19 Type of study: Experimental Studies / Observational study Limits: Humans Country/Region as subject: Europa Language: English Journal: Chemosphere Year: 2022 Document Type: Article