Seasonal behavior of water-soluble organic nitrogen in fine particulate matter (PM2.5) at urban coastal environments in Hong Kong

Perfluorinated chemicals (PFCs) can be absorbed on fine particulate matter (PM2.5) and used as stain, water and grease repellent in a wide range of consumer products. Among the PFCs, perfluorooctane sulfonate (PFOS) and perfluoro octanoic acid (PFOA) are widely detected in human blood and serum and are of concern due to their potential toxicity. In the present experiment, fine particulate matter (PM2.5) from some northern (Beijing, Xian) and southern (Hong Kong, Guangzhou and Xiamen) cities of China were collected and analyzed for perfluoro butanoic acid (PFBA), perfluoro hexanoic acid (PFHxA), perfluoro octanoic acid (PFOA), perfluoro nonanoic acid (PFNA), perfluoro decanoic acid (PFDA), perfluoro undecanoic acid (PFUdA), perfluoro dodecanoic acid (PFDoA), perfluoro hexanesulfonate (PFHxS) and perfluoro octanesulfonate (PFOS) using liquid chromatography mass spectrometry (LC-MS/MS). The total PFCs ranged from 121.2 to 192.2pg/m3, leading by Guangzhou followed by Xian, Beijing, Xiamen and Hong Koung. Among the nine measured PFCs compounds, the level of PFHxS was below the limit of detection in all the sampling cities. The other eight PFCs (PFOS, PFDoA, PFUdA, PFDA, PFNA, PFOA, PFHxA and PFBA) were detected in all the sampling locations except PFDoA in Hong Kong samples. Human exposure estimated to PFCs for adults showed PFOS as the dominant inhaled compound representing 1.59, 1.15, 1.0 and 1.0 ng/day exposure for Hong Kong, Guangzhou, Xiamen, Beijing and Xian respectively. Results from this study contribute to our understanding of exposure pathways of PFCs to humans.Jahangirnagar University J. Biol. Sci. 5(1): 21-27, 2016 (June)

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Fine particulate matter and cause-specific mortality in the Hong Kong elder patients with chronic kidney disease

Chemosphere ◽

10.1016/j.chemosphere.2020.125913 ◽

2020 ◽

Vol 247 ◽

pp. 125913 ◽

Cited By ~ 4

Author(s):

Jinjun Ran ◽

Shengzhi Sun ◽

Lefei Han ◽

Shi Zhao ◽

Dieyi Chen ◽

...

Keyword(s):

Chronic Kidney Disease ◽

Hong Kong ◽

Particulate Matter ◽

Kidney Disease ◽

Fine Particulate Matter ◽

Fine Particulate ◽

Elder Patients ◽

Specific Mortality

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Speciation and trends of organic nitrogen in southeastern U.S. fine particulate matter (PM2.5)

Journal of Geophysical Research Atmospheres ◽

10.1029/2012jd017868 ◽

2013 ◽

Vol 118 (4) ◽

pp. 1996-2006 ◽

Cited By ~ 19

Author(s):

Shar Samy ◽

James Robinson ◽

Ian C. Rumsey ◽

John T. Walker ◽

Michael D. Hays

Keyword(s):

Particulate Matter ◽

Organic Nitrogen ◽

Fine Particulate Matter ◽

Fine Particulate

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Insights into the Origin of Water Soluble Organic Carbon in Atmospheric Fine Particulate Matter

Aerosol Science and Technology ◽

10.1080/02786820903188701 ◽

2009 ◽

Vol 43 (11) ◽

pp. 1099-1107 ◽

Cited By ~ 54

Author(s):

David C. Snyder ◽

Andrew P. Rutter ◽

Ryan Collins ◽

Chris Worley ◽

James J. Schauer

Keyword(s):

Particulate Matter ◽

Organic Carbon ◽

Fine Particulate Matter ◽

Water Soluble ◽

Fine Particulate ◽

Water Soluble Organic Carbon ◽

Soluble Organic Carbon

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Temperature Modifies The Effects Of Fine Particulate Matter On Acute Mortality In Hong Kong

ISEE Conference Abstracts ◽

10.1289/isee.2015.2015-2649 ◽

2015 ◽

Vol 2015 (1) ◽

pp. 2649

Author(s):

Shengzhi Sun ◽

Peihua Cao ◽

King-Pan Chan ◽

Hilda Tsang ◽

Chit-Ming Wong ◽

...

Keyword(s):

Hong Kong ◽

Particulate Matter ◽

Fine Particulate Matter ◽

Fine Particulate

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Fine Particulate Matter Pollution Characteristics and Source Apportionment of Changchun Atmosphere

10.21203/rs.3.rs-431378/v1 ◽

2021 ◽

Author(s):

Jie Tang ◽

Zhuo Yang ◽

Yue Tui ◽

Ju Wang

Keyword(s):

Particulate Matter ◽

Mass Concentration ◽

Elemental Carbon ◽

Motor Vehicle ◽

Fine Particulate Matter ◽

Water Soluble ◽

Chemical Components ◽

Sample Collection ◽

Pollution Characteristics ◽

Fine Particulate

Abstract In order to study the pollution characteristics and main sources of fine particulate matter in the atmosphere of the city of Changchun, PM2.5 samples were collected during the four seasons in 2014, and representative months for each season are January, April, July, and October. Sample collection was carried out on 10 auto-monitoring stations in Changchun, and PM2.5 mass concentration, and its chemical components (including inorganic elements, organic carbon, elemental carbon, and water-soluble ions) were measured. The results show that the annual average mass concentration of PM2.5 in Changchun in 2014 was about 66.77 µg/m3. Organic matter was the highest component in PM2.5, followed by secondary inorganic ions (SNA), mineral dust (MIN), elemental carbon (EC), and trace elements (TE). Positive Matrix Factorization (PMF) results gave seven factors, namely, industrial, biomass- and coal-burning, industrial and soil dust, motor-vehicle, soil and secondary-ion, light-industrial, and hybrid-automotive and -industrial sources in PM2.5, with contributing values of 18.9%, 24.2%, 5.7%, 23.0%, 11.5%, 13.0%, and 3.6%, respectively.

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