Characterizing petroleum hydrocarbons deposited on road surfaces in urban environments

Characterizing petroleum hydrocarbons deposited on road surfaces in urban environments

Gasoline

Volatile organic compounds

Heavy metals

Petroleum transportation

Petroleum analysis

Organic pollutants

Quality control

Gas chromatography

Polycyclic aromatic hydrocarbons

Roads and streets

Urban transportation

Land use

Multivariant analysis

Storms

Storm sewers

Petroleum hydrocarbons are a toxic pollutant group, primarily including volatile organic compounds (VOC), semi-volatile organic compounds (SVOC) and non-volatile organic compounds (NVOC). These pollutants can be accumulated on urban roads during dry periods and then washed-off by stormwater runoff in rainy days. Unlike heavy metals and polycyclic aromatic hydrocarbons, petroleum hydrocarbons have not received an equal attention in the field of stormwater pollutant processes. This paper investigated characteristics of VOC, SVOC and NVOC pollutant loads deposited on urban roads and their influential factors using a forward stepwise regression and PROMETHEE-GAIA analysis techniques. The results indicate that the loads deposited on urban roads were NVOC > SVOC > VOC. It is also noted that the degrees of factors in influencing petroleum hydrocarbons deposited on urban roads did not equal and their order was total solids > land use type > vehicular traffic > roughness of road surfaces. The research results also showed that petroleum hydrocarbons on urban road surfaces tend to be source limiting rather than transport limiting. These outcomes can contribute to petroleum hydrocarbons polluted stormwater management, such as treatment system design and stormwater modelling approach improvement. 2018 Elsevier B.V.

589-596

653

Science of the Total Environment

2019

Liu, An

Hong, Nian

Zhu, Panfeng

Guan, Yuntao

journalArticle

489697

10.1016/j.scitotenv.2018.10.428