Lab and field screening of 5 selected passive samplers for the measurement of VOC fluxes in groundwater

Verreydt, Goedele; Bronders, Jan; Keer, Ilse Van

doi:10.14511/jasa.2014.030201

Cited by 5 publications

(5 citation statements)

References 14 publications

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“…One of these sampling devices involves the use of ceramic materials through which the contaminants diffuse into the contained sorbent. Several studies have proven their applicability for time-integrated and long-term water monitoring. − The ceramic holds a sorbent with a high absorption capacity to ensure maximum diffusion, and the sorbent can vary depending on the contaminants of interest. Moreover, the ceramic dosimeter is inert and does not swell, unlike in the case of polymeric samplers.…”

Section: Introductionmentioning

confidence: 99%

“…Its simplicity and robustness obviate the need for the frequent calibration, thereby reducing its cost and increasing its reusability. The sampling of volatile organic compounds (VOCs) and polycyclic aromatic hydrocarbons (PAHs) in groundwater field samples has been carried out using ceramic dosimeters. − Dowex Optipore L-493 and Amberlite IRA-743 have been found to be suitable sorbents for VOCs and PAHs, respectively . The use of bioassays has also been found to be compatible with the ceramic dosimeters using activated carbon sorbents for PAHs and dioxins .…”

Section: Introductionmentioning

confidence: 99%

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Development of Solid Ceramic Dosimeters for the Time-Integrative Passive Sampling of Volatile Organic Compounds in Waters

Bonifacio

Nam

Eom

et al. 2017

Environ. Sci. Technol.

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Time-integrative passive sampling of volatile organic compounds (VOCs) in water can now be accomplished using a solid ceramic dosimeter. A nonporous ceramic, which excludes the permeation of water, allowing only gas-phase diffusion of VOCs into the resin inside the dosimeter, effectively captured the VOCs. The mass accumulation of 11 VOCs linearly increased with time over a wide range of aqueous-phase concentrations (16.9 to 1100 μg L), and the linearity was dependent upon the Henry's constant (H). The average diffusivity of the VOCs in the solid ceramic was 1.46 × 10 m s at 25 °C, which was 4 orders of magnitude lower than that in air (8.09 × 10 m s). This value was 60% greater than that in the water-permeable porous ceramic (0.92 × 10 m s), suggesting that its mass accumulation could be more effective than that of porous ceramic dosimeters. The mass accumulation of the VOCs in the solid ceramic dosimeter increased in the presence of salt (≥0.1 M) and with increasing temperature (4 to 40 °C) but varied only slightly with dissolved organic matter concentration. The solid ceramic dosimeter was suitable for the field testing and measurement of time-weighted average concentrations of VOC-contaminated waters.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of Solid Ceramic Dosimeters for the Time-Integrative Passive Sampling of Volatile Organic Compounds in Waters

Bonifacio

Nam

Eom

et al. 2017

Environ. Sci. Technol.

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“…A passive sampler can cover a long sampling period and integrate pollutant concentrations over time. Although compared to conventional monitoring, the use of passive samplers can significantly reduce analytical costs, a validation procedure that includes an assessment of the degree of sampling uncertainty remains a challenge [15,17,[40][41][42][43][44][45][46][47][48][49].…”

Section: Introductionmentioning

confidence: 99%

Passive Sampling with Active Carbon Fibres in the Determination of Organic Pollutants in Groundwater

Auersperger

Koroša

Mali

et al. 2022

Water

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Legislation addressing the quality of groundwater and increasing concerns over public health calls for the development of analytical methods that can produce accurate and precise results at the ppt level. Passive sampling has been recognised as a helpful tool in identifying various organic pollutants in groundwater, even when their presence had not yet been identified through conventional groundwater quality monitoring. The article presents an analytical method involving a simple and cost-effective passive sampling device using Zorflex® activated carbon fibres (ACFs) for the qualitative monitoring of a broad range of organic pollutants in water in a single run. The applicability of the method developed was tested in three hydrogeological studies. In the first case, we present a non-targeted qualitative screening and a list of 892 different contaminants detected in the groundwater in Slovenia. In the second case, we discuss the presence and origin of organic compounds in the groundwater from a pilot area of the urban aquifer, Ljubljansko polje. The third case presents a comparison of results between passive and grab sampling. Passive sampling with ACFs confirmed the presence of a pollutant, even when it had not been previously detected through a quantitative method.

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“…Resultant characterization and monitoring data inform the design, implementation, and ultimately the overall expense of remediation for hazardous waste cleanup sites; therefore, a significant impetus exists to effectively reduce the cost of sampling and improve on the quality of monitoring data (ITRC 2010; Zhang et al, 2012; Verreydt et al 2014). In addition, a series of governmental executive orders aimed to reduce energy and carbon emissions encourage the use of more efficient and sustainable technologies for environmental monitoring (U.S.…”

Section: 0 Introductionmentioning

confidence: 99%

“…Because of the expense involved, groundwater sampling is typically sparse with respect to both frequency (e.g., quarterly) and duration (grab samples vs. time-averaged composite sampling); thus, random timing of the sampling event may either miss or coincide with extrema in the local contaminant concentration. As a result, improper conclusions may be reached regarding long term trends in concentration, compliance or non-compliance with maximum concentration level (MCL) goals, and estimations of contaminant mass flux and associated human health risks (Verreydt et al, 2014; Woodrow et al, 1986; Coes et al, 2014; Jacquet et al, 2014; Shaw and Mueller, 2009). …”

Section: 0 Introductionmentioning

confidence: 99%

Apparatus and method for time-integrated, active sampling of contaminants in fluids demonstrated by monitoring of hexavalent chromium in groundwater

Roll

Driver

Halden

2016

Science of The Total Environment

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Annual U.S. expenditures of $2B for site characterization invite the development of new technologies to improve data quality while reducing costs and minimizing uncertainty in groundwater monitoring. This work presents a new instrument for time-integrated sampling of environmental fluids using in situ solid-phase extraction (SPE). The In Situ Sampler (IS2) is an automated submersible device capable of extracting dissolved contaminants from water (100s – 1000s mL) over extended periods (hours to weeks), retaining the analytes, and rejecting the processed fluid. A field demonstration of the IS2 revealed 28-day average concentration of hexavalent chromium in a shallow aquifer affected by tidal stresses via sampling of groundwater as both liquid and sorbed composite samples, each obtained in triplicate. In situ SPE exhibited 75 ± 6% recovery and an 8-fold improvement in reporting limit. Relative to use of conventional methods (100%), beneficial characteristics of the device and method included minimal hazardous material generation (2%), transportation cost (10%), and associated carbon footprint (2%). The IS2 is compatible with commercial SPE resins and standard extraction methods, and has been certified for more general use (i.e., inorganics and organics) by the Environmental Security Technology Certification Program (ESTCP) of the U.S. Department of Defense.

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Lab and field screening of 5 selected passive samplers for the measurement of VOC fluxes in groundwater

Cited by 5 publications

References 14 publications

Development of Solid Ceramic Dosimeters for the Time-Integrative Passive Sampling of Volatile Organic Compounds in Waters

Development of Solid Ceramic Dosimeters for the Time-Integrative Passive Sampling of Volatile Organic Compounds in Waters

Passive Sampling with Active Carbon Fibres in the Determination of Organic Pollutants in Groundwater

Apparatus and method for time-integrated, active sampling of contaminants in fluids demonstrated by monitoring of hexavalent chromium in groundwater

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