Lipid-containing semipermeable membrane devices for monitoring organic contaminants in water

Huckins, James N.; Manuweera, Gamini; Petty, Jimmie D.; Mackay, Donald; Lebo, Jon A.

doi:10.1021/es00048a028

Cited by 459 publications

(405 citation statements)

References 12 publications

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“…A number of reviews of the principles governing the uptake of an analyte by different designs of passive sampling device, including the Chemcatcher ® , have been published [15,25,28]. The uptake kinetics of a chemical into a device can be described as an exponential approach to a maximum, and this can be divided into three stages: approximately linear, curvilinear and finally steady state.…”

Section: Theory Of Passive Samplingmentioning

confidence: 99%

Calibration and use of the Chemcatcher® passive sampler for monitoring organotin compounds in water

Aguilar‐Martínez

Palacios-Corvillo

Greenwood

et al. 2008

Analytica Chimica Acta

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Section: Theory Of Passive Samplingmentioning

confidence: 99%

Calibration and use of the Chemcatcher® passive sampler for monitoring organotin compounds in water

Aguilar‐Martínez

Palacios-Corvillo

Greenwood

et al. 2008

Analytica Chimica Acta

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“…One implicit assumption in the use of PSDs is that only the freely dissolved form of a chemical is available for partitioning into the membrane (12,18,19). Although this assumption has not been tested rigorously, it is reasonable to incorporate a correction for organic carbon material partitioning when accumulation of hydrophobic chemicals by PSDs is studied (20,21).…”

Section: Introductionmentioning

confidence: 99%

Estimation of the Uptake Rate Constants for Polycyclic Aromatic Hydrocarbons Accumulated by Semipermeable Membrane Devices and Triolein-Embedded Cellulose Acetate Membranes

Wang

et al. 2006

Environ. Sci. Technol.

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In this paper we report an extension of our previous work on the triolein-embedded cellulose acetate membrane (TECAM) as a passive sampling device (PSD) and describe the results from simultaneous exposure of TECAMs and triolein-containing semipermeable membrane devices (SPMDs) to PAHs in lake water for 16 days. The data obtained provided a comparison of the uptake rates of specific PAHs by the two PSDs. Using 16-day accumulation tests, similar PAH distribution patterns in TECAMs and in SPMDs (R 2 ) 0.89, p < 0.0001) were observed. However, it was noted that TECAMs could take up greater amounts of PAHs than SPMDs (735 ng/g of TECAM vs 630 ng/g of SPMD). Uptake rate constants of TECAMs and SPMDs for 16 priority pollutant (PP) PAHs, corrected for dissolved organic carbon, ranged from 0.28 to 2.94 L d -1 and from 0.16 to 0.91 L d -1 , respectively. The elimination rate constants of TECAMs were 1.4-6.7 times greater than those observed for SPMDs, thereby indicating that PAHs required shorter times to achieve equilibrium in TECAMs than in SPMDs. Thus, the results of the present study suggest that TECAMs have significant potential as a good monitor to assess the pollution of hydrophobic pollutants in aquatic environments.

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“…When contaminant concentrations in the ambient fluid are variable, a time-weighted average concentration (C f ) has been defined for passive samplers operating in the linear or integrative mode [21,22] as…”

Section: Linear Variation With Timementioning

confidence: 99%

Modeling the response of passive samplers to varying ambient fluid concentrations of organic contaminants

Hawker

2009

Enviro Toxic and Chemistry

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Abstract-Passive samplers are an important and versatile adjunct to active sampling methods for air and water. The underlying theory is increasingly mature but is often based on the assumption of constant concentrations with time in the ambient fluid. This theoretical work details the passive sampler response to possible environmental situations in which ambient concentrations vary linearly with time, decrease exponentially with time, constitute a pulsed event, or oscillate regularly with time. The modeled shape of sampler response curve with time is characteristic and can be used to determine how fluid concentrations have changed with time. The sampler elimination rate constant is shown to be crucial in governing sampler response. Thus, by using performance reference compounds and under certain conditions, information from the sampler response can in theory be used to derive specific details of the temporal variation of the contaminant in the ambient fluid. For example, data captured by a passive sampler can be used to characterize a contamination pulse.

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Lipid-containing semipermeable membrane devices for monitoring organic contaminants in water

Cited by 459 publications

References 12 publications

Calibration and use of the Chemcatcher® passive sampler for monitoring organotin compounds in water

Calibration and use of the Chemcatcher® passive sampler for monitoring organotin compounds in water

Estimation of the Uptake Rate Constants for Polycyclic Aromatic Hydrocarbons Accumulated by Semipermeable Membrane Devices and Triolein-Embedded Cellulose Acetate Membranes

Modeling the response of passive samplers to varying ambient fluid concentrations of organic contaminants

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