n-Alkanes and polycyclic aromatic hydrocarbons in total suspended particulates from the southeastern Tibetan Plateau: Concentrations, seasonal variations, and sources

Chen, Yang; Cao, Junji; Zhao, Jing; Xu, Hongmei; Arimoto, R.; Wang, Gehui; Han, Yongming; Shen, Zhenxing; Li, Guohui

doi:10.1016/j.scitotenv.2013.09.033

Cited by 90 publications

(33 citation statements)

References 56 publications

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“…The sum of quantified PAHs ranged from 23.5 to 574.3 ng/m 3 with an average of 196.5 ng/m 3 . The concentrations were comparable with the data recorded in Xi'an, Beijing, Shanghai, Guangzhou and Qingdao (Feng et al, 2006;Wang et al, 2008;Guo et al, 2009;Wei et al, 2015a), but much higher than other areas being governed by better emission control (e.g., Hong Kong) or less influenced by local or regional pollution such as Sanya and Tibetan Plateau (Chen et al, 2014;Wang et al, 2015a). The average level was also higher than that in most developing countries (Tham et al, 2008;Andreou and Rapsomanikis, 2009;Li et al, 2009;Wingfors et al, 2011).…”

Section: Quality Assurance and Control (Qa/qc)supporting

confidence: 77%

“…In factor 1 (22.6% of the contribution), it is similar to that of the industrial coal combustion in power plants and thus refers to coal burning emission which is heavily loaded with fluoranthene (FLU), pyrene (PYR), chrysene (CHR) and BaA (Chen et al, 2014). Benzo[a] fluoranthene (BaF) and benzo[b]fluoranthene (BbF) were also abundant in this factor.…”

Section: Source Apportionmentmentioning

confidence: 99%

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Characterization of parent and oxygenated-polycyclic aromatic hydrocarbons (PAHs) in Xi’an, China during heating period: An investigation of spatial distribution and transformation

Wang

Huang

et al. 2016

Chemosphere

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Section: Quality Assurance and Control (Qa/qc)supporting

confidence: 77%

Section: Source Apportionmentmentioning

confidence: 99%

Characterization of parent and oxygenated-polycyclic aromatic hydrocarbons (PAHs) in Xi’an, China during heating period: An investigation of spatial distribution and transformation

Wang

Huang

et al. 2016

Chemosphere

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“…1b) differed from the monthly mean profile (Fig. 1a): maximum average of scaled-load (675 ± 371 μg m −3 ) was observed in May 2009, reflecting the influence of high dust activity from the neighboring South-Asian region and high source activity in the region during spring (Prospero 2002;Chen et al 2014), and minimum (116 ± 54 μg m −3 ) in January 2009. The differences in two profiles (TSPM and scaled-TSPM), in the present case, arise essentially due to the variability in PBL, as little change was observed in WS's temporal profile (Fig.…”

Section: Role Of Meteorology In Temporal Profile Of Tspm Load Variabimentioning

confidence: 75%

“…Increase in the activity was observed during May-July, 2009. This increase coincided with the onset of spring bloom in vegetation and tourism (Chen et al 2014). In late summer, the concentrations declined followed by an increase in October-November 2009.…”

Section: Role Of Meteorology In Temporal Profile Of Tspm Load Variabimentioning

confidence: 80%

Profile of particulate-bound organic compounds in ambient environment of Srinagar: a high-altitude urban location in the North-Western Himalayas

Huma

Yadav

Attri

2016

Environ Sci Pollut Res

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Twenty-four hourly samples of total suspended particulate matter (TSPM) were collected once a week over 17 months in the ambient environment of Srinagar (altitude 1524 m), an urban montane location in the North-Western Himalayas. The samples were analyzed to identify and quantify the presence of diverse organic compounds (OCs) using thermal desorption gas chromatography mass spectroscopy (TD-GCMS). Non-polar organic compounds-n-alkanes, polycyclic aromatic hydrocarbons (PAHs), and molecular tracers (retene and nicotine), were detected in the TSPM samples. Molecular diagnostic ratios, derived from the quantified n-alkanes and PAHs in TSPM, assisted in characterization of the contributing sources. Significant variation in the planetary boundary layer height (meters) with change in season (summer to winter) in this region, also, affected the observed variation in the temporal profile of TSPM-bound OCs. TSPM-bound OCs were predominantly contributed from petroleum and biomass combustion; to a lesser extent from biogenic sources. High concentrations of retene and nicotine, known molecular tracers for coniferous wood combustion and tobacco smoke, respectively, were detected in the winter samples. Seasonal variation in TSPM-bound retene corresponded with the periodicity of biomass burning activity in the region. The benzo(a)pyrene equivalent (BAPE) concentrations, a measure for the carcinogenicity of TSPM-bound PAHs was calculated and the value exceeded the prescribed international standards in winter. This finding poses a major health concern for the inhabitants of this region. High BAPE concentration of PAHs during winter was linked to fossil fuel and biomass combustion, where the prevalent meteorology and topography played a synergistic role.

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“…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). They found that approximately 70% of PAHs were composed of 5-and 6-ring compounds.…”

Section: Pahs Distribution In the Qinghai-tibet Plateaumentioning

confidence: 99%

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

Lü

Luo

et al. 2016

Environment International

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The Qinghai-Tibet Plateau plays an important role in the ecological safety and human health of the surroundings due to its unique geographical position and function. Therefore, it is necessary to study the pollution status and potential risk in this area. This study summarizes the distribution of different organic pollutants in biota and environmental media of the Qinghai-Tibet Plateau. Moreover, it also pays attention to the potential health risks of these organic pollutants. Organochlorine pesticides (OCPs), polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs) were the most frequently detected in different matrices. In general, the carcinogenic risks of organic pollutants were ranked in the verylow to moderate range for both children and adults. The carcinogenic risks of organic pollutants in fish, food, and water for children were 1-2 times higher than those for adults, while risks of organic pollutants in soil/sediment and in air for children were generally 10.6-16.5 and 2.6-2.8 times higher than those for adults, respectively. The maximal hazard quotient for non-carcinogenic risk was 0.95 (potential risk for children posed by organic pollutants in yak milk of Ruoergai), almost reaching an unacceptable level. Therefore, the potential health risks could not be neglected, especially for children who were more likely to be affected by the pollutants.

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n-Alkanes and polycyclic aromatic hydrocarbons in total suspended particulates from the southeastern Tibetan Plateau: Concentrations, seasonal variations, and sources

Cited by 90 publications

References 56 publications

Characterization of parent and oxygenated-polycyclic aromatic hydrocarbons (PAHs) in Xi’an, China during heating period: An investigation of spatial distribution and transformation

Characterization of parent and oxygenated-polycyclic aromatic hydrocarbons (PAHs) in Xi’an, China during heating period: An investigation of spatial distribution and transformation

Profile of particulate-bound organic compounds in ambient environment of Srinagar: a high-altitude urban location in the North-Western Himalayas

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

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