Polycyclic Aromatic Hydrocarbons in Road-Deposited Sediments and Roadside Soil in Tijuana, Mexico

García-Flores, Enrique; Wakida, Fernando T.; Rodriguez-Mendivil, Diana Dolores; Espinoza-Gómez, Heriberto

doi:10.1080/15320383.2016.1113497

Cited by 9 publications

(2 citation statements)

References 55 publications

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“…Conversely, Agarwal (2009) noticed a lack of correlation between total PAH concentrations and the soil's organic carbon, and stated that the variations of concentrations could be explained in terms of vehicular composition (two-wheelers, cars, heavy-duty vehicles), as well as immediate surroundings of the road that modify atmospheric transport mechanisms. Similar assumptions were made by Garcia-Flores et al (2016) to explain their data. Dierkes and Geiger (1999) observed a relationship between PAHs and the age of the road shoulders; in their study, the effects of traffic density appeared to be less marked, but it should be mentioned that all samples were not taken at the same distance from the road.…”

Section: Introductionmentioning

confidence: 66%

Intra- and inter-site variability of soil contamination in road shoulders – Implications for maintenance operations

Tedoldi

Charafeddine

Branchu³

et al. 2021

Science of The Total Environment

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This study addresses soil contamination in vegetated road shoulders with diffuse inflow of runoff. It aims (i) to characterize the spatial distribution of three metals (copper, lead, zinc) and PAHs, and (ii) to identify influencing factors for the inter-site differences. An extensive sampling campaign was carried out on forty road segments in the Paris region, targeting various distances and soil depths. Copper and zinc contamination was found to be mainly restricted to the first 30 cm from the road, where their concentrations ranged respectively between 40-270 mg.kg-1 and 150-950 mg.kg-1 (with a few additional extreme values related to the presence of a galvanized steel guardrail). Lead contamination was moderate (< 100 mg.kg-1 in more than 75% of the sites) and relatively uniform across the width of the shoulders. Conversely, highest PAH concentrations were found further from the road. These differences between contaminants were likely due to the varying importance of wet weather-related processes and atmospheric transport in their dispersion mechanisms. Copper and zinc concentrations correlated well with the traffic density, which alone explained ≥ 69% of the inter-site variability, whereas lead and PAHs did not exhibit such dependence. Soil organic matter was found to control the "ceiling" concentration of metals, thus limiting the maximum amounts that can be intercepted from road runoff. These results illustrate the feasibility of estimating contamination levels on road shoulders, and thus offer interesting perspectives for better consideration of the infrastructures' maintenance needs and improved routine operations.

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Section: Introductionmentioning

confidence: 66%

Intra- and inter-site variability of soil contamination in road shoulders – Implications for maintenance operations

Tedoldi

Charafeddine

Branchu³

et al. 2021

Science of The Total Environment

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“…While in 2003, the number of maquiladoras in Tijuana was at 545, in 2012, there were only 223 maquiladoras in the city [25]. Due to the infrastructure and resource needs of these facilities, such as large inputs of water and outputs of wastewater, Tijuana also sees other pollution burdens like soil contamination [26], drought and lack of access to water [27], water pollution [28], air pollution [29,30], and illegal waste dumping [31,32].…”

Section: Introductionmentioning

confidence: 99%

Border Environmental Justice PPGIS: Community-Based Mapping and Public Participation in Eastern Tijuana, México

Prado

Ambiental²,

Comunidades³

2021

IJERPH

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Community mapping projects have been studied as important contributions to the field of environmental justice and Public Participation Geographic Information Systems (PPGIS). As a collaborative project between the Colectivo Salud y Justicia Ambiental and Red de Ciudadanos por el Mejoramiento de las Comunidades (RECIMEC), the “Mapeo Comunitario de la Zona Alamar” was created as a mechanism for community participation in the urban planning process in Tijuana, México. This paper outlines the project’s community mapping process, including planning, data collection, priority identification, and data submission. Results from this community mapping project are analyzed including the (1) particular environmental risks and goods in this border region, (2) the influence that the project data had on the urban planning process, and (3) the impact that the community mapping process had on community organizing capacity. Our findings point to particular environmental challenges in this border city including clandestine trash dumps, and contaminated water runoff points. The mapping project influenced the land use planning process by identifying the key environmental risks and goods to prioritize in the zoning and ground truthing urban planning data. The community mapping project also had a key impact on community organizing through the fomenting of knowledge and relationships between community members and government representatives at the city’s urban planning agency.

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Preface

et al. 2016

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Polycyclic Aromatic Hydrocarbons in Road-Deposited Sediments and Roadside Soil in Tijuana, Mexico

Cited by 9 publications

References 55 publications

Intra- and inter-site variability of soil contamination in road shoulders – Implications for maintenance operations

Intra- and inter-site variability of soil contamination in road shoulders – Implications for maintenance operations

Border Environmental Justice PPGIS: Community-Based Mapping and Public Participation in Eastern Tijuana, México

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