PAH Profiles of Vehicle Exhausts, Tires and Road Materials and their Contributions to PAHs in Road Dusts.
スポンサーリンク
概要
- 論文の詳細を見る
Road runoff is an important route of PAHs contamination to the aquatic environment. This study focused on exhausts of diesel and gasoline engine vehicles, tires and road materials as possible sources of PAHs in road dusts. Cluster analysis was applied to characterize 16 USEPA-PAH profile data of the possible source samples, which consisted of 22 data analyzed in this study and 64 data reported in literature. They were categorized into 6 groups (S1-S6). The eight tire samples were categorized into a single group (S1), which did not include any other source samples. The group S1 was characterized by the significantly high percentages of pyrene and benzo (ghi) perylene (43.5% and 18.9%). The road materials samples were categorized into S2 and S3 groups. The average percentage of each PAH component was less than 20% in the S2 group, while the group S3 had high total percentages (more than 75%) of the three dominant components, phenanthrene, pyrene, and fluoranthene. The S2 and S3 groups mostly consisted of road materials and particulate diesel exhausts. The gasoline exhausts and the several diesel exhausts were classified into 3 groups (S4-S6), which were commonly characterized by the high percentage of naphthalene. Multiple regression analysis was performed to estimate the contributions of categorized PAH profiles (S1-S6) in road dust samples at two streets in Tokyo. The contributions of group Sl and group S2 to two road dust samples at Kan-nana Avenue were found to be greater than 50% and 20%, respectively, while that of group S1 to two road dust samples for Sakurada Avenue were more than 75%. Consequently, tires were considered as an important PAHs contributor in the Kan-nana Avenue as well as road material and diesel exhausts. On the other hand, only road material and diesel exhausts were recognized as the major source of PAHs in Sakurada Avenue.
- 社団法人 環境科学会の論文
社団法人 環境科学会 | 論文
- Effects of Organic Matter Application on Growth of Rice Plants, Soil Environments and Methane Emission from Paddy Fields.
- Analysis of Methanogenic Microbial Ecosystem in Paddy Field Soil. Seasonal Changes in the Distribution of Various Bacteria and Effects of Organic Matter Application.:-Seasonal Changes in the Distribution of Various Bacteria and Effects of Organic Matter A
- Determination of the Sulfate-removing Ability of Freshwater Sediments by a Convenient Method based on the HPLC Analysis of Sulfate.
- Examination in Precision and Accuracy of a Simplified Short-term Exposure Method for the Measurement of Atmospheric NO2 Concentration.
- Relationship between Distribution of Gaseous Pollutants and Vital Degree of Pine and Broad-leaved Tree Species on the Mt. Gokurakuji, Hiroshima Prefecture, Japan.