Effects of Brownfield Remediation on Total Gaseous Mercury Concentrations in an Urban Landscape
| Autor: | Mario Montesdeoca, Linghui Meng, Huiting Mao, Charles T. Driscoll |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010504 meteorology & atmospheric sciences
Environmental remediation Atmospheric mercury chemistry.chemical_element 010501 environmental sciences lcsh:Chemical technology 01 natural sciences Biochemistry Sink (geography) Article Analytical Chemistry Brownfield Soil restoration lcsh:TP1-1185 Electrical and Electronic Engineering diurnal and seasonal variation Instrumentation 0105 earth and related environmental sciences geography Gaseous mercury geography.geographical_feature_category Atomic and Molecular Physics and Optics Mercury (element) chemistry brownfield Environmental chemistry Environmental science Urban landscape total gaseous mercury concentrations urban |
| Zdroj: | Sensors (Basel, Switzerland) Sensors Volume 20 Issue 2 Sensors, Vol 20, Iss 2, p 387 (2020) |
| ISSN: | 1424-8220 |
| Popis: | In order to obtain a better perspective of the impacts of brownfields on the land&ndash atmosphere exchange of mercury in urban areas, total gaseous mercury (TGM) was measured at two heights (1.8 m and 42.7 m) prior to 2011&ndash 2012 and after 2015&ndash 2016 for the remediation of a brownfield and installation of a parking lot adjacent to the Syracuse Center of Excellence in Syracuse, NY, USA. Prior to brownfield remediation, the annual average TGM concentrations were 1.6 ± 0.6 and 1.4 ± 0.4 ng · m &minus 3 at the ground and upper heights, respectively. After brownfield remediation, the annual average TGM concentrations decreased by 32% and 22% at the ground and the upper height, respectively. Mercury soil flux measurements during summer after remediation showed net TGM deposition of 1.7 ng · 2 · day &minus 1 suggesting that the site transitioned from a mercury source to a net mercury sink. Measurements from the Atmospheric Mercury Network (AMNet) indicate that there was no regional decrease in TGM concentrations during the study period. This study demonstrates that evasion from mercury-contaminated soil significantly increased local TGM concentrations, which was subsequently mitigated after soil restoration. Considering the large number of brownfields, they may be an important source of mercury emissions source to local urban ecosystems and warrant future study at additional locations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|