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Advisor(s)
Abstract(s)
Indoor environmental quality is of utmost importance since urban populations spend a large proportion of their
life in confined spaces. Supermarkets offer a wide range of products and services that are prone to emitting
several air pollutants. This study aimed to perform a comprehensive characterisation of the indoor and outdoor
air quality in a multinational supermarket, encompassing not only criteria parameters but also unregulated
pollutants of concern. Monitoring included measurements of comfort parameters, CO2, multiple gaseous pollutants,
particulate matter (PM10) and bioburden. PM10, volatile organic compounds (VOCs) and carbonyls were
subject to chemical speciation. Globally, the supermarket presented CO2, VOCs, and PM10 values below the limits
imposed by international regulations. The PM10 concentration in the supermarket was 33.5 ± 23.2 μg/m3, and
the indoor-to-outdoor PM10 ratio was 1.76. Carbonaceous constituents represented PM10 mass fractions of 21.6%
indoors and 15.3% outdoors. Due to the use of stainless-steel utensils, flour and fermentation processes, the
bakery proved to be a pollution hotspot, presenting the highest concentrations of PM10 (73.1 ± 9.16 μg/m3),
PM10-bound elements (S, Cl, K, Ca, Ti, and Cr) and acetaldehyde (42.7 μg/m3). The maximum tetrachloroethylene
level (130 μg/m3) was obtained in the cleaning products section. The highest values of colony-forming
units of bacteria and fungi were recorded in the bakery, and fruit and vegetable section. The most prevalent
fungal species was Penicillium sp., corresponding to 56.9% of the total colonies. In addition, other fungal species/
sections with toxicological or pathogenic potential were detected (Aspergillus sections Aspergilli, Circumdati, Flavi,
Mucor and Fusarium sp.).
Description
Keywords
Supermarket Indoor air quality PM10 Bioburden VOC
Pedagogical Context
Citation
Furst, Leonardo; Cipoli, Yago; Galindo, Nuria; Yubero, Eduardo; Viegas, Carla; Pena, Pedro; Nunes, Teresa; Feliciano, Manuel; Alves, Célia (2024). Comprehensive analysis of particulate matter, gaseous pollutants, and microbiological contamination in an international chain supermarket. Environmental Pollution. ISSN 0269-7491. 363, p. 1-14
Publisher
Elsevier