Measurement of PCB emissions from building surfaces using a novel portable emission test cell

Lyng, Nadja; Gunnarsen, Lars; Andersen, Helle Vibeke; Kofoed‐Sørensen, Vivi; Clausen, Per Axel

doi:10.1016/j.buildenv.2016.02.011

Cited by 9 publications

(4 citation statements)

References 27 publications

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“…The calk in other parts of the apartment and possible spillage of calk on the concrete below the floor are expected to be the primary sources of PCBs in the bedroom. Two samples of painted wall paper had a content of 130 and 124 mg/kg PCB total , respectively, while two samples of the varnished parquet floor had a content of 72 and 80 mg/kg PCB total , respectively . PCBs associated with these surfaces are suspected to be tertiary contamination resulting from sorption of PCBs from indoor air.…”

Section: Methodsmentioning

confidence: 99%

Partitioning of PCBs from air to clothing materials in a Danish apartment

et al. 2017

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Polychlorinated biphenyl (PCB) contamination of buildings continues to pose an exposure threat, even decades after their application in the form of calks and other building materials. In this research, we investigate the ability of clothing to sorb PCBs from contaminated air and thereby influence exposure. The equilibrium concentration of PCB-28 and PCB-52 was quantified for nine used clothing fabrics exposed for 56 days

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Section: Methodsmentioning

confidence: 99%

Partitioning of PCBs from air to clothing materials in a Danish apartment

et al. 2017

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“…This concentration is a key parameter for material emission characterization, indoor air quality modeling [21], and risk exposure assessment [22]. However, conventional methods generally determine emission rates under laboratory conditions [23][24][25][26][27][28]. The compounds emitted by the material in the gas volume of a chamber (or cell) are recovered by pumping through a filter or an adsorbent tube (Tenax) connected to the outlet of the chamber.…”

Section: Introductionmentioning

confidence: 99%

New sampling device for on-site measurement of SVOC gas-phase concentration at the emitting material surface

et al. 2017

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The gas-phase concentration at the material surface (y ) is pointed out in the literature as a key parameter to describe semivolatile organic compound (SVOC) emissions from materials. This is an important input data in predictive models of SVOC behavior indoors and risk exposure assessment. However, most of the existing measurement methods consist of determining emission rates and not y and none allow on-site sampling. Hence, a new passive sampler was developed. It consists of a glass cell that is simply placed on the material surface until reaching equilibrium between material and air; y is then determined by solid-phase microextraction (SPME) sampling and GC-MS analysis. The limits of detection are at the μg/m level and relative standard deviations (RSD) below 10%. A variation of 11% between two sets of experiments involving different cell volumes confirmed the y measurement. In addition, due to the ability of SVOCs to be sorbed on surfaces, the cell wall/air partition was assessed by determining the inner cell surface concentration of SVOCs, which is the concentration of SVOCs adsorbed on the glass, and the cell surface/air partition coefficient (K ). The recovery yields of the SVOCs sorbed on the cell walls are strongly compound-dependent and comprise between 2 and 93%. The K coefficients are found to be lower than the stainless steel/air partition coefficient (K ), showing that glass is suitable for the SVOC sampling. This innovative tool opens up promising perspectives in terms of identification of SVOC sources and quantification of their emissions indoors, and would significantly contribute to human exposure assessment. Graphical Abstract Passive sampling for the determination of SVOCs concentration at the material/air interface.

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“…The contaminated high-rises have provided the settings for multiple studies on e.g. the dynamics of PCBs in indoor environments (Andersen and Frederiksen 2021;Lyng et al 2016a;Lyng et al 2016b;Morrison et al 2018), exposure characterization (Andersen et al 2020;Frederiksen et al 2020) as well as clinical and epidemiological studies (Kofoed et al 2021;Tøttenborg et al 2022). In the current study, silicone wristbands were used as an exposure measure as part of a larger study including levels of PCBs in indoor air, dust and surfaces wipes as well as samples of serum and hand wipes of residents in both contaminated and uncontaminated parts of the estate (Andersen et al 2020;Frederiksen et al 2020).…”

Section: Introductionmentioning

confidence: 99%