Abstract
Exposure to potentially toxic elements (PTEs) bound to PM2.5 can cause various health effects, including cardiovascular disease, allergies, and other related diseases. There have been several studies on the concentration of PTEs, including zinc (Zn), iron (Fe), and manganese (Mn) bound PM2.5 in the indoor air of urban schools. In this study, the concentration of Zn, Fe, and Mn in the indoor air of schools bound PM2.5 were meta-analyzed. PubMed and Scopus were used to retrieve papers related to the concentration of PTEs bound PM2.5 in the indoor air of urban schools from January 1, 2000 to March 10, 2020. The concentration of PTEs in PM2.5 was meta-analyzed based on the country subgroup in the random-effects model (REM). Thirty papers with 25 data reports were included in the study. The rank order of PTEs bound PM2.5 was Zn (17.32 ng/m3) > Fe (14.49 ng/m3) > Mn (7.40 ng/m3). The rank order of countries based on the concentration of Fe-bound PM2.5 in the indoor air of urban schools was China > Poland > Italy > Spain > Taiwan > Turkey > Iran) > Chile; Zn, Poland > Iran > Taiwan > Turkey > Spain > Italy > Chile; and for Mn, Poland > China > Iran > Taiwan > Spain > Italy > Chile. The pooled concentration of PTEs (Fe, Mn, and Zn) bound PM2.5 in the indoor air of urban schools in Poland and China was higher than in other countries, hence, therefore, it is recommended to carry out a PM2.5 concentration reduction program in the indoor air of schools in these countries.
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Tobacco and Health Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran, is the financer of this project (IR.HUMS.REC.1399.415).
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Searching in databases was performed by Amenh Bahreini; data extraction by Amenh Bahreini; meta-analysis of data by Yadolah Fakhri and prepared manuscript by Trias Mahmudiono; Yadolah Fakhri, Zoha Hedari Nejad, Hasti Daraei, Amin Mousavi Khaneghah.
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Fakhri, Y., Akhlaghi, M., Daraei, H. et al. The concentration of potentially toxic elements (zinc, iron, manganese) bound PM2.5 in the indoor air of urban schools: a global systematic review and meta-analysis. Air Qual Atmos Health 16, 77–84 (2023). https://doi.org/10.1007/s11869-022-01257-1
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DOI: https://doi.org/10.1007/s11869-022-01257-1