Dioxin analysis in water by using a passive sampler and CALUX bioassay

Addeck, Amr; Croes, Kim; Langenhove, Kersten Van; Denison, Michael S.; Elskens, Marc; Baeyens, Willy

doi:10.1016/j.talanta.2011.10.009

Cited by 9 publications

(12 citation statements)

References 24 publications

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“…The titania coating serves as a diffusion barrier limiting the movement of analytes to molecular diffusion only (Fig. 2) (Addeck et al, 2012). The pore diameter was small enough to prevent crossing or growth of microorganisms, as the most dominant bacteria in water systems are 0.5–5.0 μm (Sigee, 2005).…”

Section: Methodsmentioning

confidence: 99%

“…Then, the samples were ultrasonicated, centrifuged to settle down the suspended particles, and the liquid phase was pipetted into new glass vials through pre-cleaned glass-wool filters. This step was repeated 3 more times for all samples using 9, 9, and 6 mL of fresh toluene (Addeck et al, 2012). The drainage-canal sediments and paper-mill sludge were freeze-dried in a lyophilizer.…”

Section: Methodsmentioning

confidence: 99%

“…The scientific validity and cost effectiveness of using this technique for volatile organic compounds (VOCs) in water had been previously documented (Bopp et al, 2005; Verreydt et al, 2010). In a recent laboratory study, we validated the use of this sampler for dioxin-contaminated water (Addeck et al, 2012). While the relatively low sampling rate necessitates long sampling times when the concentrations are low, it does enable in a simple way (only one analysis is necessary) the assessment of TWA concentrations over long periods (Weiß et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…The ceramic toximeter in combination with the CALUX bioassay was previously validated as an analytical tool for the determination of PCDD/Fs in solution (Addeck et al, 2012). However, concentrations of dissolved PCDD/Fs in real aquatic systems are very low which makes their in situ determination a real challenge.…”

Section: Introductionmentioning

confidence: 99%

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Time-integrated monitoring of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in urban and industrial wastewaters using a ceramic toximeter and the CALUX bioassay

et al. 2014

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The ceramic toximeter as a passive sampler in combination with the CALUX bioassay was utilized as a time-integrated pollution-assessment technique for dioxin-like PCDD/Fs in wastewaters. Toximeters filled with XCARB and enclosed in stainless steel cages were submerged in wastewater of Belbeis drainage-canal and EMAK paper-mill, located in Egypt, for 28 days. Two samplers were removed every week from each site. Extracts from toximeters, from bottom-sediments, and from paper-mill sludge were analyzed by the CALUX. Results showed a regular increase in the amounts of PCDD/Fs trapped by the toximeters as sampling time increased. Time-weighted average concentrations (TWA) of PCDD/Fs in the wastewaters of the drainage-canal and paper-mill were 231 (214-281) and 26 (24.1-32.6) pg-BEQ L-1, respectively. Compared to literature data, this means a high pollution level for the drainage-canal water, while the pollution level in the paper-mill wastewater is similar to that reported for other paper mills. The PCDD/Fs levels in the drainage-canal bottom-sediments and in the paper-mill sludge were 8.3 and 14.6 pg-BEQ g-1 dry-weight, at the lower end of internationally reported values in similar compartments. The sampling rate of the tested toximeters for dissolved PCDD/Fs was about 3.6 mL d-1. Sediment/water partitioning coefficient log Kd of PCDD/Fs in the drainage-canal and the paper-mill was 1.42 and 2.70 respectively. The organic-carbon normalized partition coefficient log Koc was 4.17 and 3.19 respectively, and is lower than the reported values for other sites.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Time-integrated monitoring of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in urban and industrial wastewaters using a ceramic toximeter and the CALUX bioassay

et al. 2014

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“…Ceramic-based passive sampling devices have been previously used for monitoring dissolved polychlorinated dibenzo-ρ-dioxins and polychlorinated dibenzofurans (PCDD/Fs) [11, 12], polycyclic aromatic hydrocarbons (PAHs) and volatile organic contaminants (VOCs) in surface and ground water [13, 14], and flame retardants in river water [15]. The ceramic toximeter is based on the free flow of analyte molecules from the sampled medium through a ceramic diffusion membrane towards a suitable receiving phase, under the effect of a chemical-potential difference [16].…”

Section: Introductionmentioning

confidence: 99%

Time-integrated monitoring of dioxin-like polychlorinated biphenyls (dl-PCBs) in aquatic environments using the ceramic toximeter and the CALUX bioassay

Addeck

Croes

Langenhove

et al. 2014

Talanta

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Ceramic passive samplers or toximeters (packed with active carbon 1% w/w on celite), in combination with the CALUX bioassay have been used as a time-integrated monitoring technique for dissolved dioxin-like PCBs in urban and industrial wastewaters. The technique showed to be reliable during laboratory experiments: (1) PCB-126 amounts extracted from the passive samplers increased linearly with the time of exposure and (2) PCB-126 concentrations calculated from the amounts accumulated by the passive samplers were in agreement with their concentrations in the testing solution. Afterwards the toximeters were applied in the field. Two sampling sites located in Egypt were chosen: the Belbeis drainage canal, and the EMAK paper mill. A total of 18 ceramic toximeters were exposed to the wastewater in both sampling sites for a maximum period of 4 weeks. Two samplers were collected weekly from each site to monitor the increase in target analytes over time. Extracts were analyzed using the CALUX bioassay and the total dioxin-like PCB toxicity was reported for the aqueous phase (water column), as well as the solid phase (sediment and sludge) in both sampling sites. The time-weighted average concentration (TWA) of dl-PCBs in wastewater of the paper mill during the sampling period ranged between 7.1 and 9.1 pg-BEQ L-1, while that of the drainage canal ranged between 9.5 and 12.2 pg-BEQ L-1. The dl-PCBs in the fibrous sludge (paper mill) and bottom sediment (drainage canal) were 0.5 and 0.4 pg-BEQ g-1 dry-weight, respectively. The organic-carbon normalized partition coefficients between sediment and water (log Koc) for the paper mill and the canal were 2.4 and 4.3, respectively.

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A tiered, integrated biological and chemical monitoring framework for contaminants of emerging concern in aquatic ecosystems

Maruya

Dodder

Mehinto

et al. 2015

Integr Environ Assess Manag

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The chemical-specific risk-based paradigm that informs monitoring and assessment of environmental contaminants does not apply well to the many thousands of new chemicals that are being introduced into ambient receiving waters. We propose a tiered framework that incorporates bioanalytical screening tools and diagnostic nontargeted chemical analysis to more effectively monitor for contaminants of emerging concern (CECs). The framework is based on a comprehensive battery of in vitro bioassays to first screen for a broad spectrum of CECs and nontargeted analytical methods to identify bioactive contaminants missed by the currently favored targeted analyses. Water quality managers in California have embraced this strategy with plans to further develop and test this framework in regional and statewide pilot studies on waterbodies that receive discharge from municipal wastewater treatment plants and stormwater runoff. In addition to directly informing decisions, the data obtained using this framework can be used to construct and validate models that better predict CEC occurrence and toxicity. The adaptive interplay among screening results, diagnostic assessment and predictive modeling will allow managers to make decisions based on the most current and relevant information, instead of extrapolating from parameters with questionable linkage to CEC impacts. Integr Environ Assess Manag 2016;12:540-547. © 2015 SETAC.

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Dioxin analysis in water by using a passive sampler and CALUX bioassay

Cited by 9 publications

References 24 publications

Time-integrated monitoring of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in urban and industrial wastewaters using a ceramic toximeter and the CALUX bioassay

Time-integrated monitoring of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in urban and industrial wastewaters using a ceramic toximeter and the CALUX bioassay

Time-integrated monitoring of dioxin-like polychlorinated biphenyls (dl-PCBs) in aquatic environments using the ceramic toximeter and the CALUX bioassay

A tiered, integrated biological and chemical monitoring framework for contaminants of emerging concern in aquatic ecosystems

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