Diurnal and nocturnal variations of PAHs in the Lhasa atmosphere, Tibetan Plateau: Implication for local sources and the impact of atmospheric degradation processing

Attributing risk burden of PM2.5-bound polycyclic aromatic hydrocarbons to major emission sources: Case study in Guangzhou, south China

“…Several PAHs have been proved to be human carcinogens and have a significant presence in particulate matter, these toxicants can deposit in the lungs and exert their carcinogenicity over long exposure periods (Collins et al, 1998;Armstrong et al, 2004). As semi-volatile persistent organic pollutants (POPs), airborne PAHs are capable of long range transport and impacting remote areas (Halsall et al, 2001;Ding et al, 2007;Liu et al, 2013).…”

The impact of polybrominated diphenyl ether prohibition: A case study on the atmospheric levels in China, Japan and South Korea

“…It is worthy of mentioning that, the observed levels in Japan were closed to the concentrations detected in some remote areas, such as the Great Lakes (Strandberg et al, 2001) and the Tibetan Plateau . It was probable that PBDEs have been banned strictly in Japan long before that in China and South Korea (Hu et al, 2010;Liu et al, 2013).…”

“…Individual states within the United States of America also legislated to prohibit its use during the period from 2006 to 2008 (Betts, 2008;Chaemfa et al, 2009b). In East Asia, the use of these mixtures has been discouraged from 1998 onwards in Japan on a voluntary basis (Liu et al, 2013), but in China, usage has been officially restricted since 2008 (Hu et al, 2010).…”

“…The regional atmospheric monitoring of POPs has been performed to identify the sources, to recognize the transport and to understand the temporal trend (Liu et al, 2013). Passive air samplers (PASs) have been frequently used to support national (Liu et al, 2009), regional (Jaward et al, 2004), as well as global (Pozo et al, 2006) monitoring programs, due to its simplicity, reliability, cost-effectiveness and friendly operation (Shoeib and Harner, 2002).…”

An overview on the organic pollution around the Qinghai-Tibet plateau: The thought-provoking situation

“…The average concentrations of total PAHs and benzo[a]pyrene (BaP) within tents was a hundred times higher than those of outdoor air on the Plateau. Liu et al (2013b) analyzed air samples at two suburban sites of Lhasa city (Table S3) and speculated that incomplete wood/cow dung combustion was the main pollution source based on the multiple diagnostic ratios. Chen et al (2014) investigated the concentrations, seasonal variations, and sources of n-alkanes and PAHs in 62 suspended particle samples collected from Lulang (Table S3).…”