+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Local and regional anthropogenic influence on PM2.5 elements in Hong Kong

Local and regional anthropogenic influence on PM2.5 elements in Hong Kong

Atmospheric Environment 41(28): 5994-6004

Hong Kong's persistent unhealthy level of fine particulate matter is a current public health challenge, complicated by the city being located in the rapidly industrializing Pearl River Delta Region of China. While the sources of the region's fine particulate matter (PM2.5) are still not well understood, this study provides new source information through ground measurements and statistical analysis of 24 elements associated with particulate matter collected on filters. Field measurements took place over 4 months (October 2002, December 2002, March 2003, and June 2003) at seven sites throughout the Pearl River Delta, with three sites located in Hong Kong and four sites in the neighboring province, Guangdong. The 4-month average element concentrations show significant variation throughout the region, with higher levels of nearly every species seen among the northern Guangdong sites in comparison to Hong Kong. The high correlation (Pearson r > 0.8) and similar magnitudes of 11 species (Al, Si, S, K, Ca, Mn, Fe, Zn, Br, Rb, and Pb) at three contrasting sites in Hong Kong indicate that sources external to Hong Kong dominate the regional levels of these elements. Further correlative analysis compared Hong Kong against potential source areas in Guangdong Province (Shenzhen, Zhongshan, and Guangzhou). Moderate correlation of sulfur for all pairings of Hong Kong sites with three Guangdong sites in developed areas (average Pearson r of 0.52-0.94) supports the importance of long-distance transport impacting the region as a whole, although local sources also clearly impact observed concentrations. Varying correlative characteristics for zinc when Hong Kong sites are paired with Shenzhen (average r = 0.86), Guangzhou (average r = -0.65) and Zhongshan (average r = 0.45) points to a source area located south of Guangzhou and locally impacting Zhongshan. The concentration distribution and correlative characteristics of bromide point to sources located within the Pearl River Delta, but the specific location is yet inconclusive. Uniquely poor correlation of eight species (Al, Si, K, Ca, Mn, Fe, Rb, and Pb) for the pairing of Hong Kong sites with Guangzhou, in addition to the relatively higher concentrations measured at Guangzhou, indicates a significant regional impact due to land development and industrial activities in the Guangzhou vicinity.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 019332077

Download citation: RISBibTeXText

DOI: 10.1016/j.atmosenv.2007.03.012

Related references

On the local and regional influence on ground-level ozone concentrations in Hong Kong. Environmental Pollution 123(2): 307-317, 2003

Regional and local factors in attenuation modelling; Hong Kong case study. Journal of Asian Earth Sciences 27(6): 892-906, 2006

Roentgen Centenary Congress and the 3rd Annual Scientific Meeting of the Hong Kong College of Radiologists, Hong Kong, Hong Kong, November 8-12, 1995. Hong Kong Medical Journal 1(4 Suppl. ): 9-194, 1995

5th Annual Scientific Meeting of the Hong Kong Division of the International Academy of Pathology, Hong Kong, Hong Kong, November 16-17, 1996. Pathology International 47(5): A1-A8, 1997

Adaptation to stimulus orientation in mouse primary visual cortex. European Journal of Neuroscience 47(4): 346-357, 2018

The marine flora and fauna of hong kong and southern china vols. 1 and 2. introduction and taxonomy vol. 1 ecology morphology behavior and physiology vol. 2 proceedings of the 1st international marine biological workshop hong kong hong kong april 18 may 10 1980. Morton, B And C K Tseng (Ed ) The Marine Flora And Fauna Of Hong Kong And Southern China, Vols 1 And 2 Introduction And Taxonomy (Vol 1); Ecology, Morphology, Behaviour And Physiology (Vol 2 ); Proceedings Of The 1st International Marine Biological Workshop, Hong Kong, Hong Kong, April 18-May 10, 1980 Viii+554p(Vol 1); Viii+379p(Vol 2) Hong Kong University Press: Hong Kong, Hong Kong Illus Maps Paper Viii+554p(Vol 1), Viii+379p(Vol 2), 1982

Global influence and local uniqueness: the case of adolescent leisure in Hong Kong. World Leisure Journal 42(4): 24-32, 2000

Cuprophilicity: Spectroscopic and Structural Evidence for Cu-Cu Bonding Interactions in Luminescent Dinuclear Copper(I) Complexes with Bridging Diphosphane Ligands We are grateful for financial support from The University of Hong Kong, the Hong Kong University Foundation, and the Research Grants Council of Hong Kong SAR, P.R. China. Angewandte Chemie 39(22): 4084-4088, 2000

The Marine Flora and Fauna of Hong Kong and southern China III Introduction, taxonomy and ecology, Vol 1; Fouling and pollution, morphology, behaviour and physiology, Vol 2; Fourth International Marine Biological Workshop The Marine Flora and Fauna of Hong Kong and southern China, Hong Kong, Hong Kong, April 11-29, 1989. Morton, B. The, 1992

Current practice in preventing blood---borne diseases during organ/tissue transplantation in Hong Kong Scientific Committee of the Advisory Council on AIDS and the Hong Kong Society of Transplantation, 5/F Yaumatei Jockey Club Clinic, 145 Battery Street, Yaumatei, Kowloon, Hong Kong. Hong Kong Medical Journal 4(4): 361-366, 2002

The marine flora and fauna of hong kong and southern china ii vols 1 2 and 3 introduction and taxonomy vol 1 taxonomy and ecology vol 2 and behavior morphology physiology and pollution vol 3 second international marine biological workshop the marine flora and fauna of hong kong and southern china hong kong hong kong april 2 24 1986. American Malacological Bulletin 8(1): 1-8, 1990

1997 Annual Meeting of the Hong Kong Society for Immunology, Hong Kong, Hong Kong, February 1, 1997. Asian Pacific Journal of Allergy & Immunology 15(1): 55-64, 1997

Temporal distributions of anthropogenic Al, Zn and Pb in Hong Kong Porites coral during the last two centuries. Marine Pollution Bulletin 63(5-12): 508-515, 2011

Heavy metal accumulation and anthropogenic impacts on Tolo Harbour, Hong Kong. Marine Pollution Bulletin 40(2): 174-180, 2000