Clustered long-range transport routes and potential sources of PM 2.5 and their chemical characteristics around the Taiwan Strait

Li, Tsung-Chang; Yuan, Chung-Shin; Huang, Heng‐Tsung Danny; Lee, Chon‐Lin; Wu, Shi; Tong, Chuan

doi:10.1016/j.atmosenv.2016.10.010

Cited by 34 publications

(10 citation statements)

References 52 publications

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“…Air pollution is a heterogeneous mixture of substances, commonly gases, volatile organic compounds (VOCs) and particulate matter (PM) [8]. PM can be released from three main sources: (1) anthropogenic sources such as cars, planes, industries and residential heating; (2) natural sources such as sea spray, soil erosion, forest fires and dust storms; (3) atmospheric transformation of gases and vapors into secondary aerosols [9].…”

Section: Introductionmentioning

confidence: 99%

Chemical composition of PM10 and its effect on in vitro hemolysis of human red blood cells (RBCs): a comparison study during dust storm and inversion

Faraji

Pourpak

Naddafi

et al. 2019

J Environ Health Sci Engineer

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Section: Introductionmentioning

confidence: 99%

Chemical composition of PM10 and its effect on in vitro hemolysis of human red blood cells (RBCs): a comparison study during dust storm and inversion

Faraji

Pourpak

Naddafi

et al. 2019

J Environ Health Sci Engineer

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“…Hou et al, (2011) apportioned the sources of OC and EC in PM2.5 that were collected from 2006 to 2007 in Shanghai and investigated the carbonaceous pollutant roles associated with haze episodes in different seasons. Kunwar et al, (2014) presented one-year data sets of carbonaceous aerosols collected in Okinawa Island, Japan, with the aim of providing insight into the long range transport of anthropogenic aerosols from East Asia, while Li et al, (2017) integrated three-years observations of OC and EC (2013-2015) in PM2.5 in the Taiwan Strait and estimated their potential contribution to the formation of PM2.5.…”

Section: Introductionmentioning

confidence: 99%

Sources and dry deposition of carbonaceous aerosols over the coastal East China Sea: Implications for anthropogenic pollutant pathways and deposition

Wang

Feng

Guo³

et al. 2019

Environmental Pollution

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While many studies have been conducted on carbonaceous aerosols in urban areas worldwide, investigations of carbonaceous components in marine atmospheres are rather limited. In this study, 75 paired total suspended particle (TSP) and PM2.5 samples were collected over four seasons on Huaniao Island (HNI), an island that lies downwind of continental pollutants emitted from mainland China moving towards the East China Sea (ECS). These samples were analyzed for organic carbon (OC) and elemental carbon (EC), with a special focus on char-EC (char) and soot-EC (soot), to understand their sources, and the scale and extent of pollution and dry deposition over the coastal ECS. 2 The results showed that char concentrations in PM2.5 and TSP averaged from 0.13-1.01 and 0.31-1.44 µg/m 3 ; while for soot, they were from 0.03-0.21 and 0.16-0.56 µg/m 3 , respectively. 69.0% of the char and 36.4% of the soot were present in the PM2.5 fraction. The char showed apparent seasonal variations, with highest concentrations in winter and lowest in summer; while soot displayed relatively small seasonal variations, with maximum concentrations in the fall and minimum concentrations in summer. The char/soot ratios in PM2.5 averaged from 3.29-17.22; while for TSP, they were from 1.20-7.07. Both of the ratios in PM2.5 and TSP were highest in winter and lowest in fall. Comparisons of seasonal variations in OC/EC and char/soot ratios confirmed that char/soot may be a more effective indicator of carbonaceous aerosol source identification than OC/EC. Annual average atmospheric dry deposition fluxes of OC and EC into ECS were estimated to be 229 and 107 µg/m 2 /d, respectively, and their deposition fluxes significantly increased during episodes in fall, winter and spring. It was estimated that the loadings of OC+EC and EC accounted for 1.3% and 4.1% of the total organic carbon and EC in ECS surface sediments, respectively, implying a relatively small contribution of OC and EC dry deposition to organic carbon burial. This finding also indicates a possibly more important contribution of wet deposition to organic carbon burial in sediments of ECS, and this factor should be considered for future study.

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“…The Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) was employed to trace the transport routs of the air parcel arriving at Taitung City on February 21 st -24 th in this study. Three-dimensional (height, longitude, and latitude) and 72-h backward trajectories were simulated every 6 h from 18:00 UTC, February 20 th (Li et al, 2017a). Air masses with low altitude of 100, 300, and 500 m were simulated.…”

Section: Backward Trajectory Simulationmentioning

confidence: 99%

Chemical Composition and Health Risk of PM2.5 from Near-ground Firecracker Burning in Micro Region of Eastern Taiwan

Shen

Yuan

et al. 2019

Aerosol Air Qual. Res.

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The randomness of firecracker-burning site and the overlapping impact of multi-sources makes the source apportionment of PM 2.5 during the firecracker burning events more difficult. To investigate the influences of the downwind distance to the firecracker-burning site on the temporospatial distribution of PM 2.5 and public health risk, PM 2.5 were sampled at three sites adjacent to a fixed firecracker-burning route accompanied with annual pilgrimage activity during the Lantern Festival in Taitung, Taiwan, which had a low background PM 2.5 concentration. The metallic elements, water-soluble ions, carbonaceous contents were analyzed. The potential sources were identified using positive matrix factorization. Finally, the health risks were assessed by calculating the hazard quotient and incremental lifetime carcinogenic risk, respectively. The results showed that the average concentration of PM 2.5 on the event days increased by approximately five-fold compared to the non-event days. The increase of chemical components varied significantly from the distance to the burning site. The concentrations of K, Fe, Al, Mg, K + , Cland OC rose by 6-14 times at one site close to a site with intensive firecracker burning, while increased by 2-6 times at one site far away from the firecracker burning sites. The PM 2.5 increment on the event days was mostly attributed to firecracker burning, kitchen fumes, and mobile sources. The health risk assessment results showed that the hazard index differed between the sampling sites. Furthermore, the cancer risk of one site close to the firecracker burning site was over the threshold, while that far away from the site was below the threshold.

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Clustered long-range transport routes and potential sources of PM 2.5 and their chemical characteristics around the Taiwan Strait

Cited by 34 publications

References 52 publications

Chemical composition of PM10 and its effect on in vitro hemolysis of human red blood cells (RBCs): a comparison study during dust storm and inversion

Chemical composition of PM10 and its effect on in vitro hemolysis of human red blood cells (RBCs): a comparison study during dust storm and inversion

Sources and dry deposition of carbonaceous aerosols over the coastal East China Sea: Implications for anthropogenic pollutant pathways and deposition

Chemical Composition and Health Risk of PM2.5 from Near-ground Firecracker Burning in Micro Region of Eastern Taiwan

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