PMID- 14620810
OWN - NLM
STAT- MEDLINE
DCOM- 20040315
LR  - 20190714
IS  - 0013-936X (Print)
IS  - 0013-936X (Linking)
VI  - 37
IP  - 21
DP  - 2003 Nov 1
TI  - Distribution of polycyclic aromatic hydrocarbons in the coastal region off Macao, 
      China: assessment of input sources and transport pathways using compositional 
      analysis.
PG  - 4855-63
AB  - The coastal region off Macao is a known depositional zone for persistent organic 
      pollutants (POPs) in the Pearl River Delta and Estuary of southern China and an 
      important gateway for the regional contributions of contamination to the globe. 
      This paper presents a comprehensive assessment of the input sources and transport 
      pathways of polycyclic aromatic hydrocarbons (PAHs) found in the coastal 
      sediments of Macao, based on measurements of 48 2-7 ring PAHs and 7 
      sulfur/oxygenated (S/O) PAH derivatives in 45 sediment, 13 street dust, and 68 
      aerosol samples. Total sediment PAHs concentrations ranged from 294 to 12741 
      ng/g, categorized as moderate contamination compared to other regions of Asia and 
      the world. In addition, the PAH compounds appeared to be bound more strongly to 
      aromatics-rich soot particles than to natural organic matter, implying a 
      prevailing atmospheric transport route for PAHs to Macao's coast. Compositional 
      analysis and principal component analysis (PCA) suggested that different classes 
      of PAHs in the coastal sediments of Macao may have been derived from different 
      input sources via various transport pathways. For example, alkylated and S/O PAHs 
      were likely derived from fossil fuel leakage and transported to sediments by both 
      aerosols particles and street runoff. High-molecular-weight parent PAHs were 
      predominantly originated from automobile exhausts and distributed by direct and 
      indirect atmospheric deposition. Low-molecular-weight parent PAHs, on the other 
      hand, may have stemmed from lower temperature combustion and fossil fuel (such as 
      diesel) spillage from ships and boats and were transported to sediments by river 
      runoff or direct discharge as well as by air-water exchange.
FAU - Mai, Bixian
AU  - Mai B
AD  - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of 
      Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China. 
      nancymai@gig.ac.cn
FAU - Qi, Shihua
AU  - Qi S
FAU - Zeng, Eddy Y
AU  - Zeng EY
FAU - Yang, Qingshu
AU  - Yang Q
FAU - Zhang, Gan
AU  - Zhang G
FAU - Fu, Jiamo
AU  - Fu J
FAU - Sheng, Guoying
AU  - Sheng G
FAU - Peng, Pingan
AU  - Peng P
FAU - Wang, Zhishi
AU  - Wang Z
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Air Pollutants)
RN  - 0 (Fossil Fuels)
RN  - 0 (Polycyclic Aromatic Hydrocarbons)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - Air Pollutants/analysis
MH  - China
MH  - Environmental Monitoring
MH  - Fossil Fuels
MH  - Geologic Sediments/*chemistry
MH  - Incineration
MH  - Molecular Weight
MH  - Particle Size
MH  - Polycyclic Aromatic Hydrocarbons/*analysis
MH  - Temperature
MH  - Water Movements
MH  - Water Pollutants, Chemical/*analysis
EDAT- 2003/11/19 05:00
MHDA- 2004/03/17 05:00
CRDT- 2003/11/19 05:00
PHST- 2003/11/19 05:00 [pubmed]
PHST- 2004/03/17 05:00 [medline]
PHST- 2003/11/19 05:00 [entrez]
AID - 10.1021/es034514k [doi]
PST - ppublish
SO  - Environ Sci Technol. 2003 Nov 1;37(21):4855-63. doi: 10.1021/es034514k.