Document Detail

Effectiveness of leaded petrol phase-out in Tianjin, China based on the aerosol lead concentration and isotope abundance ratio.
MedLine Citation:
PMID:  16165188     Owner:  NLM     Status:  MEDLINE    
The phase-out of leaded petrol has been a measure widely used to reduce atmospheric lead pollution. Since the 1980s, China began to promote unleaded petrol. In order to assess the effectiveness of the measure an isotope fingerprint technique was applied for aerosol samples in the city of Tianjin. After dilute acid leaching, the lead concentration and isotope abundance ratios were determined for 123 samples collected in Tianjin during eight years (1994-2001). The 206Pb/207Pb ratio was lower in summer, when coal combustion emission was low and vehicle exhaust became more important, indicating that the 206Pb/207Pb ratio of leaded petrol in Tianjin is lower than that of aerosol samples. The 206Pb/207Pb ratio gradually increased from 1994 to 2001, a trend that suggests that the contribution from vehicle exhaust was diminishing. Overall, the measurements matched well with national statistical data of leaded and unleaded petrol production. After the nationwide switch to unleaded gasoline, comprehensive control measures are urgently needed to reduce air lead pollution in China, as aerosol lead reduced slightly but remains at a relatively high level.
Wan Wang; Xiande Liu; Liwei Zhao; Dongfa Guo; Xiaodan Tian; Freddy Adams
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-09-13
Journal Detail:
Title:  The Science of the total environment     Volume:  364     ISSN:  0048-9697     ISO Abbreviation:  Sci. Total Environ.     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-05-30     Completed Date:  2006-08-01     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0330500     Medline TA:  Sci Total Environ     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  175-87     Citation Subset:  IM    
Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
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MeSH Terms
Aerosols / analysis
Air Pollutants / analysis*
Air Pollution / analysis,  prevention & control*
Environmental Monitoring*
Isotopes / analysis
Lead / analysis*
Public Policy
Vehicle Emissions / analysis
Waste Management / methods*
Reg. No./Substance:
0/Aerosols; 0/Air Pollutants; 0/Gasoline; 0/Isotopes; 0/Vehicle Emissions; 7439-92-1/Lead

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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