The FLEC® has been validated and used in research for many years.
Below is a publication list of journal articles, abstracts, poster or oral presentations where the FLEC or CHEMATEC’s other products have been in focus.
If you have anything that can be added to the list, we encourage you to contact CHEMATEC.
2016 |
Liu, Cong; Zhang, Yinping Characterizing the equilibrium relationship between DEHP in PVC flooring and air using a closed-chamber SPME method Journal Article In: Building and Environment, vol. 95, pp. 283 - 290, 2016, ISSN: 0360-1323. Abstract | Links | BibTeX | Tags: Emission, Indoor air quality (IAQ), Mass transfer, Persistent organic pollutants (POPs), Semivolatile organic compound (SVOC) @article{LIU2016283,The di-(2-ethylhexyl) phthalate (DEHP) concentration in the air immediately adjacent to a polyvinyl chloride (PVC) flooring surface, y0 (μg/m3), has been identified as one of the critical parameters governing the emission process and consequent exposure. At room temperature and below, the relationship between y0 and the vapor pressure of pure DEHP (Psat) is still unclear. Few studies have been conducted to examine the influence of the mass fraction of DEHP in PVC on the relationship. In this study a new closed-chamber solid phase microextraction (SPME) method is developed to characterize ratio of y0 to Psat at 23 °C. This method avoids the artifact from wall-loss of sampling lines and of the thermal desorption system, in contrast to ventilated-chamber methods. Results show that at 23 °C y0 is significantly lower than the vapor pressure of pure DEHP. When the mass fraction of DEHP in PVC flooring increases from 13% to 23%, y0/Psat is increased by 7.2%, similar to what is reported in the literature. The sorption capacity of SPME stainless steel (SS) rods differs by up to 104%, although they are all made of SS. Based on error analysis, strategies are recommended to improve the precision and time efficiency. The method developed here should work for other SVOC-polymer systems. |
2013 |
Xiong, Jianyin; Wang, Lixin; Bai, Yuhua; Zhang, Yinping Measuring the characteristic parameters of VOC emission from paints Journal Article In: Building and Environment, vol. 66, pp. 65 - 71, 2013, ISSN: 0360-1323. Abstract | Links | BibTeX | Tags: Characteristic parameters, Emission, Indoor air quality (IAQ), Paints, Volatile organic compounds (VOCs) @article{XIONG201365,The emission characteristic parameters of volatile organic compounds (VOCs) from paints are the initial concentration, the diffusion coefficient and the paint/air partition coefficient. It is necessary to determine these parameters for fully understanding the emission behaviors as well as for source control. Based on detailed mass transfer analysis of VOC emissions from paints, a novel method is developed to measure these parameters, which owns the following merits: (1) the diffusion coefficient and partition coefficient can be simultaneously determined; (2) it takes less than 12 h for the cases studied and indicates high measurement accuracy (R2 in the range of 0.921–0.939). Ventilated chamber experiments are performed to obtain the two parameters of methylcyclohexane and toluene emissions from one kind of solvent-based paint. The effectiveness of the method is verified by the good agreement between model predictions based on the determined characteristic parameters and experiments. The present approach is then applied to analyze the experimental data in the literature, and good results are also obtained, which further demonstrates that the approach is convincing and reliable. Our new approach should prove useful for rapid prediction and characterization of VOC emissions from paints as well as from other wet materials. |
2010 |
Missia, Dafni A; Demetriou, E; Michael, N; Tolis, E I; Bartzis, J G Indoor exposure from building materials: A field study Journal Article In: Atmospheric Environment, vol. 44, no. 35, pp. 4388 - 4395, 2010, ISSN: 1352-2310. Abstract | Links | BibTeX | Tags: Building materials emissions, Field and laboratory emission cell (FLEC), Indoor air quality (IAQ), Volatile organic compounds (VOCs) @article{MISSIA20104388,The present study has been conducted in the frame of BUMA (Prioritization of Building Materials Emissions as indoor pollution sources), a European funded project, aiming at assessing the exposure to emitted compounds in indoor air. Field campaigns in five (5) European cities (Milan, Copenhagen, Dublin, Athens and Nicosia) were carried out. These campaigns covered weekly winter and summer concentration measurements in two (2) public buildings and two (2) private houses in each city. BTEX, terpenes, and carbonyls were measured using passive sampling in two sites inside the building and one outside. VOC emission measurements on selected building material have also been performed using Field and Laboratory Emission Cell (FLEC). The results on indoor concentrations for compounds such as formaldehyde (1.2–62.6μgm−3), acetaldehyde (0.7–41.6μgm−3), toluene (0.9–163.5μgm−3), xylenes (0.2–177.5μgm−3) and acetone (2.8–308.8μgm−3) have shown diversity and relatively significant indoor sources depending on the building type, age etc. Indoor concentrations of these substances are varied depending on the building age and type. The percentage of approximately 40% of the indoor air quality levels originated from building materials. |