Document Detail

Evaluation of Hydrogenated Resin Acids as Molecular Markers for Tire-wear Debris in Urban Environments.
MedLine Citation:
PMID:  22008013     Owner:  NLM     Status:  Publisher    
To propose new molecular markers for tire-wear emissions, four dihydroresin acids, i.e., 8-isopimaren-18-oic acid (I), 8-pimaren-18-oic acid (II), 13β(<i>H</i>)-abieten-18-oic acid (III), and 13α(<i>H</i>)-abiet-8-en-18-oic acid (IV), were identified and investigated for source specificities, distributions, and environmental stabilities. The absence of I-IV in natural sources and the linear correlations between dihydroresin acids with different skeletons in tires and in environmental samples demonstrated that I-IV are specific markers for synthetic rubbers. The ratio of III + IV to the sum of III + IV plus abietic acid showed the resin acids distribution between different environmental compartments receiving contributions from traffic and natural sources. The physicochemical properties and results of photolysis experiments suggested that I-IV can set lower limits for tire-wear contributions to environmental loads of particulate matter (PM) and polycyclic aromatic hydrocarbons with molecular weight ≥ 202. By comparing III + IV concentrations or (III+IV)/pyrene or (III+IV)/benzo[<i>a</i>]pyrene ratios in tires and those in environmental matrices, the contributions of tire-wear emissions to PM, pyrene, and benzo[a]pyrene were estimated to be 0.68 ± 0.54%, 6.9 ± 4.8%, and 0.37 ± 0.18% in roadside PM and 0.83 ± 0.21%, 0.88 ± 0.52%, and 0.08 ± 0.06% in rooftop PM.
Hidetoshi Kumata; Mika Mori; Sho Takahashi; Shohei Takamiya; Mikio Tsuzuki; Tatsuya Uchida; Kitao Fujiwara
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-10-18
Journal Detail:
Title:  Environmental science & technology     Volume:  -     ISSN:  1520-5851     ISO Abbreviation:  -     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-10-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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