Changes in chemical composition and oxidative potential of urban PM2.5 between 2010 and 2013 in Hungary

Investigation of aerosol trace element concentrations nearby Algiers for environmental monitoring using instrumental neutron activation analysis

“…As shown in Table 7, due to low winds and low mixing height, we notice that, except for Gd, the concentrations of the majority of the elements during the summer season are superior to those of the winter season by a factor which varied from 3 to 4 for Mo, Se, Cs, Hf and by a factor of 2 for Ca, Cd, Ce, La, and Cr. In case of Cr and Co, we noticed the same ratios in another study done in Nanjing, China (Sun et al, 2014) and in Budapest, Hungary (Szigeti et al, 2015). The summer / winter concentrations ratio for Zn in this study is similar to that observed in PM2.5 fraction of Nanjing, China; but it is twice higher than that calculated in TSP fraction one (Sun et al, 2014).…”

Comparison between five acellular oxidative potential measurement assays performed with detailed chemistry on PM<sub>10</sub> samples from the city of Chamonix (France)

“…Indeed a consensus has yet to emerge regarding a standard in vitro test system or combination of tests that would be most appropriate for PM-related health impact evaluation (Ayres et al, 2008). Only a small number of studies have compared different acellular OP measurements for a given set of ambient PM samples Janssen et al, 2014;Künzli et al, 2006;Szigeti et al, 2015;Visentin et al, 2016;. Yet, fewer studies have compared different assays over a year-long period to gain a better understanding of seasonal variability Jedynska et al, 2017;Saffari et al, 2014;Szigeti et al, 2015;Yang et al, 2015).…”

“…Only a small number of studies have compared different acellular OP measurements for a given set of ambient PM samples Janssen et al, 2014;Künzli et al, 2006;Szigeti et al, 2015;Visentin et al, 2016;. Yet, fewer studies have compared different assays over a year-long period to gain a better understanding of seasonal variability Jedynska et al, 2017;Saffari et al, 2014;Szigeti et al, 2015;Yang et al, 2015). Finally, there is little research relating the oxidative capacity of particulate pollution with detailed chemical characterization of ambient PM, in an attempt to identify the PM components or sources that may contribute most to underlying toxicity Kelly et al, 2011;Saffari et al, 2014;Verma et al, 2014;Weber et al, 2018).…”

PM2.5 particulates and metallic elements (Ni, Cu, Zn, Cd and Pb) study in a mixed area of summer season in Shalu, Taiwan

“…The highest average Cu was at Fuzhou, China (179.7 ± 132.9 ng/m 3 , Xu et al 2012), while the lowest Cu was at Macquarie Park, Australia (0.9 ng/m 3 , Mohiuddin et al 2014 Geng et al 2013), while the lowest Zn was at Hok Tsui, Hong Kong (0.12 ± 0.01 ng/m 3 , Ho et al 2003). The highest average Cd was at Chuncheon, Korea (17.4 ng/m 3 , Han et al 2015), while the lowest Cd was at Budapest, Hungary (0.23 ng/m 3 , Szigeti et al 2015). Finally, the highest average Pb was at Taichung, Taiwan (283.1 ± 252.2 ng/m 3 , Fang et al 2003), while the lowest Pb was at Florida, USA (5.3 ng/m 3 , Olson et al 2008).…”

“…The highest average Ni was at Cairo (Urban), Egypt (41 ± 13 ng/m 3 , Shaltout et al 2014), while the lowest Ni was at Budapest, Hungary (0.6 ng/m 3 , Szigeti et al 2015). The highest average Cu was at Fuzhou, China (179.7 ± 132.9 ng/m 3 , Xu et al 2012), while the lowest Cu was at Macquarie Park, Australia (0.9 ng/m 3 , Mohiuddin et al 2014 Geng et al 2013), while the lowest Zn was at Hok Tsui, Hong Kong (0.12 ± 0.01 ng/m 3 , Ho et al 2003).…”