Vertical Light Non-Aqueous Phase Liquid (LNAPL) distribution by Rn prospecting in monitoring wells

Briganti, Alessandra; Voltaggio, Mario; Rainaldi, Elisa; Carusi, Claudio

doi:10.1007/s10661-023-12154-0

Environ Monit Assess

2023

DOI: 10.1007/s10661-023-12154-0

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Vertical Light Non-Aqueous Phase Liquid (LNAPL) distribution by Rn prospecting in monitoring wells

Alessandra Briganti,

Mario Voltaggio,

Elisa Rainaldi

et al.

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2024

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Cited by 2 publications

References 39 publications

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Radon deficit technique applied to the study of the ageing of a spilled LNAPL in a shallow aquifer

Briganti,

Voltaggio,

Carusi

et al. 2024

Journal of Contaminant Hydrology

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Radon deficit technique applied to the study of the ageing of a spilled LNAPL in a shallow aquifer

Briganti,

Voltaggio,

Carusi

et al. 2024

Journal of Contaminant Hydrology

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Assessing Light Non-Aqueous Phase Liquids in the Subsurface Using the Soil Gas Rn Deficit Technique: A Literature Overview of Field Studies

Cecconi,

Verginelli,

Baciocchi

2024

Sustainability

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222Radon (Rn) was proposed in the late 1990s as a naturally occurring tracer for light non-aqueous phase liquids (LNAPLs) in the subsurface, due to its preferential partitioning behavior in the non-aqueous phase, resulting in a reduction in Rn activities in areas with LNAPLs in the subsurface compared to unimpacted areas (Rn deficit). The Rn deficit technique emerged as a cost-effective, non-invasive, and sustainable method to rapidly identify and quantify LNAPLs, for the characterization and monitoring of contaminated sites. This paper presents an overview of the technique and its field applications, with a specific focus on the use of the method in the vadose zone based on soil gas Rn measurements. Although various configurations have shown favorable outcomes, limitations persist in the application of the soil gas Rn deficit technique. Deep LNAPL contamination, soil matrix heterogeneity, and temporal variations in Rn emissions pose challenges to quantitative evaluations of LNAPL contamination. Recognizing these factors is crucial for site-specific assessments. This review aims to highlight both the strengths and limitations of the method, providing insights into potential areas for future research while acknowledging the positive outcomes achieved in different configurations over the past decades.

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Vertical Light Non-Aqueous Phase Liquid (LNAPL) distribution by Rn prospecting in monitoring wells

Cited by 2 publications

References 39 publications

Radon deficit technique applied to the study of the ageing of a spilled LNAPL in a shallow aquifer

Radon deficit technique applied to the study of the ageing of a spilled LNAPL in a shallow aquifer

Assessing Light Non-Aqueous Phase Liquids in the Subsurface Using the Soil Gas Rn Deficit Technique: A Literature Overview of Field Studies

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