TY - CONF A1 - Richter, Matthias A1 - Horn, Wolfgang A1 - Jann, Oliver A1 - Brödner, Doris A1 - Till, Carola T1 - Application of a new gas mixing device to test adsorptive wall materials T2 - Healthy Buildings 2009 CY - Syracuse, NY, USA DA - 2009-09-13 PY - 2009 AN - OPUS4-19898 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias A1 - Beck, O. A1 - Wilke, Olaf A1 - Pyza, Lars A1 - Seeger, Stefan T1 - Test procedure for the evaluation of adsorptive buildings materials T2 - Healthy Buildings 2012 - 10th International Conference CY - Brisbane, Australia DA - 2012-07-08 PY - 2012 AN - OPUS4-27449 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias A1 - Jann, Oliver T1 - Determination of radon exhalation from building materials using emission test chambers T2 - IAQ 2013 Environmental Health in Low Energy Buildings CY - Vancouver, Canada DA - 2013-10-15 PY - 2013 AN - OPUS4-29627 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias A1 - Jann, Oliver A1 - Wilke, Olaf T1 - Use of emission test chambers for the determination of chemical emissions from construction materials T2 - 1st International Conference on the Chemistry of Construction Materials CY - Berlin, Germany DA - 2013-10-07 PY - 2013 AN - OPUS4-29626 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias A1 - Corbel, M. A1 - Allen, N. A1 - Heikens, D. A1 - Li, J. A1 - Nohr, Michael T1 - A comparison to assess the preparative and analytical capabilities of laboratories for the measurement of semi-volatile organic compounds in indoor air T2 - MACPoll-Final conference CY - Delft, Netherlands DA - 2014-05-13 PY - 2014 AN - OPUS4-30703 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Richter, Matthias A1 - Horn, Wolfgang A1 - Jann, Oliver A1 - Juritsch, Elevtheria A1 - Klinge, Andrea A1 - Klinge, Andrea A1 - Fontana, Patrick A1 - Miccoli, Lorenzo T1 - Indoor Air Emission Tests of Natural Materials T2 - 1st International Conference on Bio-based Buildings Materials CY - Clermont-Ferrand, France DA - 2015-06-22 PY - 2015 AN - OPUS4-33719 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Musyanovych, A. A1 - Grimmer, Christoph A1 - Sadak, A. E. A1 - Heßling, L. A1 - Bilsel, M. A1 - Horn, Wolfgang A1 - Richter, Matthias T1 - Polymeric Capsules with VOCs for Controlled Emission N2 - Micro-(nano-)encapsulation technology involves building of a barrier between the core and the environment and offers a number of benefits to preserve the functional and physicochemical properties of core material. Tremendous progress has been made in synthesizing well-defined capsules to achieve desired properties such as particle size, chemical composition, and controlled release of the payload. Encapsulation of volatile organic compounds (VOCs) that could evaporate with a defined rate is of immense interest for application in emission reference materials (ERM). These are urgently needed for quality assurance and quality control purposes (QA/QC) required by test standards for the determination of chemical emissions of construction and other materials for interior use. As such ERMs are hardly available on the market, the EU-funded EMPIR project MetrIAQ [1] was started to fill this gap by developing a material with temporally constant emission of VOCs typically found in indoor air. Different capsules in a size range between 5 and 50 μm were synthesized through an interfacial polyaddition/polycondensation reaction in direct (water-in-oil) system. As VOC several types of hydrophobic liquid materials were used. After synthesis, the morphology and physicochemical properties of capsules were characterized by electron microscopy, FTIR and DSC/TGA. An encapsulation efficiency up to 90% could be reached. The emission kinetic of volatile agents was studied in emission test chambers at 23 °C and 50% RH for 14 days. First results indicate that variation of the cross-linking grade of the shell material is one important parameter to adjust the desired emission rate. The overall aim is to achieve a consistent emission profile that decreases by less than 10 % over a target period of at least 14 days. T2 - 36th European Colloid & Interface Society Conference CY - Chania, Crete, Greece DA - 04.09.2022 KW - Capsules KW - Volatile organic compound KW - Polymer KW - Material emissions KW - Reference materials PY - 2022 AN - OPUS4-56039 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Horn, Wolfgang A1 - Richter, Matthias A1 - Wilke, Olaf T1 - Volatile organic compounds from building products - Results from seven proficiency tests with emission test chambers conducted between 2008 and 2021 N2 - Emission testing of volatile organic compounds (VOC) from materials and products is commonly based on emission test chamber measurements. To ensure the comparability of results from different testing laboratories their measurement performance must be verified. For this purpose, Bundesanstalt für Materialforschung und -prüfung (BAM) organizes an international proficiency test every two years using well-characterised test materials (one sealant, one furniture board and four times a lacquer) with defined VOC emissions. The materials fulfilled the requirements of homogeneity, reproducibility, and stability. Altogether, 41 VOCs were included of which 37 gave test chamber air concentrations between 10 and 98 µg/m³. This is the typical concentration range to be expected and to be quantified when performing chamber tests. Four compounds had higher concentrations between 250 and 1105 µg/m³. The relative standard deviations (RSD) of BAM proficiency tests since 2008 are compared and the improvement of the comparability of the emission chamber testing is shown by the decrease of the mean RSD down to 23% in 2021. In contrast, the first large European interlaboratory comparison in 1999 showed a mean RSD of 51%. T2 - Proficiency Testing in Analytical Chemistry, Microbiology and Laboratory Medicine CY - Windsor, United Kingdom DA - 25.09.2023 KW - Proficiency Test KW - VOC-Emission KW - Chamber-test PY - 2023 AN - OPUS4-59694 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -