The critical importance of using current conceptual site models in environmental restoration decision making: a discussion and case study

Gibbs, James P.; Santillan, Javier; Nation, Matt

doi:10.2462/09670513.988

Cited by 3 publications

(4 citation statements)

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“…Overall, benchtop NMR is shown to be useful as an analytical tool to improve the characterization of NAPL as a complimentary tool for site characterization to aid in the selection and application of more sensitive analytical tools, including chromatography and mass spectrometry, as more in‐depth investigations are undertaken. Overall, the inclusion of benchtop NMR as an analytical tool will help to improve the development of conceptual site models needed for the development of accurate and effective strategies for the monitoring and remediation of contaminated sites …”

Section: Discussionmentioning

confidence: 99%

“…Due to the limitations of common or conventional approaches for environmental analysis, the composition of many complex NAPL samples are often only partially understood. This limited understanding of point source contamination can impact the development of reliable and accurate risk assessments, the development of accurate conceptual site models, and the design and optimization of remedial strategies to address groundwater and soil contamination …”

Section: Introductionmentioning

confidence: 99%

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Practical application of ¹H benchtop NMR spectroscopy for the characterization of a nonaqueous phase liquid from a contaminated environment

Fallaise

Tweedie

Konzuk

et al. 2019

Magnetic Reson in Chemistry

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Nonaqueous phase liquids (NAPLs) located at the surface of the water table and/or below the water table are often a significant source for groundwater contamination near current or former commercial/industrial facilities. Due to the complex and long history of many industrial sites, these NAPLs often contain a complex mixture of contaminants and as such can be difficult to fully characterize using conventional analytical methods. Remediation and risk assessment activities at sites containing NAPLs may, subsequently, be hindered as the contamination profile may not be fully understood. This paper demonstrates the application of bench‐scale 1H nuclear magnetic resonance (NMR) spectroscopy as a practical tool to assist with the characterization of complex NAPLs. Here, a NAPL collected from a contaminated site situated near a former chemical manufacturing facility was analyzed using a combination of one‐dimensional (1D) 1H NMR spectroscopy and two‐dimensional (2D) 1H J‐resolved spectroscopy (JRES). It is shown that 1D NMR experiments are useful in the rapid identification of the classes of compounds present, whereas 2D JRES NMR experiments are useful in identifying specific compounds. The use of benchtop NMR spectroscopy as a simple and cost effective tool to assist in the analysis of contaminated sites may help improve the practical characterization of many heavily contaminated sites and facilitate improved risk assessments and remedial strategies.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Practical application of ¹H benchtop NMR spectroscopy for the characterization of a nonaqueous phase liquid from a contaminated environment

Fallaise

Tweedie

Konzuk

et al. 2019

Magnetic Reson in Chemistry

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“…Even without the identification of individual compounds, clear qualitative similarities and differences can be noted between samples. The use of NMR as a forensics tool to rapidly elucidate similarities between groundwater contaminant profiles and potential sources may be suitable in future efforts to improve conceptual site models as part of a strategy for improved site management and remediation (Gibbs et al 2010).…”

Section: Discussionmentioning

confidence: 99%

Nontargeted Analysis of a Non‐Aqueous‐Phase Liquid From a Chemical Manufacturing Site Using Nuclear Magnetic Resonance Spectroscopy

Fallaise

Konzuk²,

Cheyne³

et al. 2019

Enviro Toxic and Chemistry

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Non‐aqueous‐phase liquids (NAPLs), composed primarily of organic solvents and other immiscible liquids, can be found in the subsurface at many industrial sites. The chemical composition of NAPLs is often complex and, in many instances, difficult to fully characterize using conventional analytical techniques based on targeted compound analysis. Incomplete characterization of NAPLs leaves gaps in the understanding of the chemical profile at an impacted site. Previous work has shown that nuclear magnetic resonance (NMR) spectroscopy may be able to assist in the improved characterization of complex NAPL samples. In general, NMR spectroscopy provides an unbiased approach for the analysis of organic compounds because different classes of compounds are all treated and analyzed using the same methods. In addition, NMR spectroscopy provides unique structural information that can be used to elucidate unknowns. The present study describes the use of NMR spectroscopy as a nontargeted tool to characterize the composition of NAPLs collected from an impacted site. It is shown that NMR spectroscopy can be a complementary tool to be used in site assessments to help provide improved understanding of NAPL chemistry, leading to the development of improved conceptual site models and improved strategies for remedial and managerial activities at impacted sites. Environ Toxicol Chem 2019;00:1–9. © 2019 SETAC

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“…Using conceptual site models (CSM), a commonly used tool in site remediation to guide decision making and communicating site information to stakeholder groups [22], we explore how stakeholders can positively influence the development of a problem definition, thereby enhancing an engineer's understanding of a given project's social and environmental setting. CSMs are iterative tools used by remediation experts to synthesize information regarding contaminant sources, fate and transport, and site characteristics to provide a better understanding of the extent of a remediation project and remediation strategies that can be used to address environmental contamination concerns [24], [25]. Engineers also use CSMs as a tool for communicating with stakeholders of diverse educations and backgrounds [25], [26].…”

Section: Introductionmentioning

confidence: 99%

Teaching Students to Incorporate Community Perspective into Environmental Engineering Problem Definition through Iterative Conceptual Site Models

Schwartz,

Smits,

Smith

et al.

2022 ASEE Annual Conference &Amp; Exposition Proceedings

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is a Ph.D. candidate in Civil Engineering at the University of Texas at Arlington. She received her B.S. in Environmental Engineering from Colorado School of Mines in 2017 and her M.S. in Civil and Environmental Engineering from Colorado School of Mines in 2018. Michelle's previous research covered numerous topics including the effects of temperature on soil moisture probes, middle school students' perceptions on science, technology, engineering, and mathematics (STEM), and natural gas leak detection methods. Her current research is on how contaminant perception of artisanal and small-scale mining at different spatial scales influences environmental response and how engineers can work with that information to co-develop socio-technical responses to environmental pollution.

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The critical importance of using current conceptual site models in environmental restoration decision making: a discussion and case study

Cited by 3 publications

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Practical application of ¹H benchtop NMR spectroscopy for the characterization of a nonaqueous phase liquid from a contaminated environment

Practical application of ¹H benchtop NMR spectroscopy for the characterization of a nonaqueous phase liquid from a contaminated environment

Nontargeted Analysis of a Non‐Aqueous‐Phase Liquid From a Chemical Manufacturing Site Using Nuclear Magnetic Resonance Spectroscopy

Teaching Students to Incorporate Community Perspective into Environmental Engineering Problem Definition through Iterative Conceptual Site Models

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The critical importance of using current conceptual site models in environmental restoration decision making: a discussion and case study

Cited by 3 publications

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Practical application of 1H benchtop NMR spectroscopy for the characterization of a nonaqueous phase liquid from a contaminated environment

Practical application of 1H benchtop NMR spectroscopy for the characterization of a nonaqueous phase liquid from a contaminated environment

Nontargeted Analysis of a Non‐Aqueous‐Phase Liquid From a Chemical Manufacturing Site Using Nuclear Magnetic Resonance Spectroscopy

Teaching Students to Incorporate Community Perspective into Environmental Engineering Problem Definition through Iterative Conceptual Site Models

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Practical application of ¹H benchtop NMR spectroscopy for the characterization of a nonaqueous phase liquid from a contaminated environment

Practical application of ¹H benchtop NMR spectroscopy for the characterization of a nonaqueous phase liquid from a contaminated environment