PMID- 29257886 OWN - NLM STAT- MEDLINE DCOM- 20190917 LR - 20190917 IS - 1520-5851 (Electronic) IS - 0013-936X (Linking) VI - 52 IP - 2 DP - 2018 Jan 16 TI - Emissions of Secondary Formed ZnO Nano-Objects from the Combustion of Impregnated Wood. An Online Size-Resolved Elemental Investigation. PG - 895-903 LID - 10.1021/acs.est.7b03584 [doi] AB - The release of secondary nano-objects formed during waste combustion processes is becoming a matter of concern, considering their known toxicity and the fact that the 100% efficiency of filtering systems is not always ensured. An increased cytotoxicity and genotoxicity on human peripheral blood lymphocytes is known particularly in the case of ZnO, which is often contained in paints and waterproof agents, heading to a relevant quantity present in the waste wood material. In this study, the behavior of ZnO nanoparticles during wood combustion and the effect of the reduction potential of generated carbon species on the release of secondarily formed ZnO-containing nano-objects were investigated. By hyphenating a modified scanning mobility particle sizer (SMPS) and inductively coupled mass spectrometry (ICP-MS), it was possible to obtain simultaneously size-resolved and chemical information on the emitted nanoparticles. Through the established correlation between SMPS and ICP-MS signals, Zn-containing particles were efficiently resolved from the combustion generated particles. Transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS) on size-selected particles confirmed the SMPS and ICP-MS data. The use of electron diffraction allowed determining the structure of the crystalline materials as hexagonal ZnO. A possible mechanism of reduction of ZnO to Zn and further reformation as secondary nano-objects is proposed. FAU - Foppiano, Debora AU - Foppiano D AUID- ORCID: 0000-0003-3263-3569 AD - Environmental Engineering Institute (IIE), School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Federale de Lausanne (EPFL) , CH 1015 Lausanne, Switzerland. FAU - Tarik, Mohamed AU - Tarik M FAU - Muller Gubler, Elisabeth AU - Muller Gubler E FAU - Ludwig, Christian AU - Ludwig C AUID- ORCID: 0000-0002-0718-8195 AD - Environmental Engineering Institute (IIE), School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Federale de Lausanne (EPFL) , CH 1015 Lausanne, Switzerland. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180104 PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 RN - SOI2LOH54Z (Zinc Oxide) SB - IM MH - Humans MH - Microscopy, Electron, Transmission MH - *Nanoparticles MH - Particle Size MH - Wood MH - *Zinc Oxide EDAT- 2017/12/20 06:00 MHDA- 2019/09/19 06:00 CRDT- 2017/12/20 06:00 PHST- 2017/12/20 06:00 [pubmed] PHST- 2019/09/19 06:00 [medline] PHST- 2017/12/20 06:00 [entrez] AID - 10.1021/acs.est.7b03584 [doi] PST - ppublish SO - Environ Sci Technol. 2018 Jan 16;52(2):895-903. doi: 10.1021/acs.est.7b03584. Epub 2018 Jan 4.