PMID- 28435179 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20191120 IS - 0278-6826 (Print) IS - 0278-6826 (Linking) VI - 51 IP - 3 DP - 2017 TI - Real-time measurement of size-resolved elemental composition ratio for flame synthesized composite nanoparticle aggregates using a tandem SMPS-ICP-OES. PG - 311-316 LID - 10.1080/02786826.2016.1271110 [doi] AB - Composite nanoparticles find application in catalysis, drug delivery, and energy storage and require increasingly fine control of their physical properties and composition. While composite nanoparticles have been widely synthesized and characterized, little work has systematically correlated the initial concentration of precursors and the final composition of flame synthesized composite nanoparticles. This relationship is explored in a diffusion flame aerosol reactor by coupling a scanning mobility particle sizer (SMPS) with an inductively coupled plasma optical emission spectrometer (ICP-OES). A framework for studying the relationship between the initial precursor concentrations of different elements and the final nanoparticle composition is explored. The size-resolved elemental composition was measured by directly injecting size-selected fractions of aggregated magnetite and silicon dioxide composite nanoparticles into the ICP-OES plasma. This work showed a correlation between precursor molar ratio and the measured elemental ratio in the mobility size range of 50 to 140 nm. Building on previous work studying size resolved elemental composition of engineered nanoparticles, the analysis is extended to flame synthesized composite nanoparticle aggregates in this work. FAU - Reed, Nathan AU - Reed N AD - Aerosol and Air Quality Research Laboratory, Washington University in St. Louis, St. Louis, Missouri, USA. AD - Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri, USA. FAU - Fang, Jiaxi AU - Fang J AD - Aerosol and Air Quality Research Laboratory, Washington University in St. Louis, St. Louis, Missouri, USA. AD - Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri, USA. FAU - Chavalmane, Sanmathi AU - Chavalmane S AD - Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri, USA. FAU - Biswas, Pratim AU - Biswas P AD - Aerosol and Air Quality Research Laboratory, Washington University in St. Louis, St. Louis, Missouri, USA. AD - Department of Energy, Environmental and Chemical Engineering, Washington University in St. Louis, St. Louis, Missouri, USA. LA - eng GR - U54 CA199092/CA/NCI NIH HHS/United States PT - Journal Article DEP - 20161216 PL - United States TA - Aerosol Sci Technol JT - Aerosol science and technology : the journal of the American Association for Aerosol Research JID - 9886760 PMC - PMC5395249 MID - NIHMS843603 EDAT- 2017/04/25 06:00 MHDA- 2017/04/25 06:01 PMCR- 2018/01/01 CRDT- 2017/04/25 06:00 PHST- 2017/04/25 06:00 [entrez] PHST- 2017/04/25 06:00 [pubmed] PHST- 2017/04/25 06:01 [medline] PHST- 2018/01/01 00:00 [pmc-release] AID - 10.1080/02786826.2016.1271110 [doi] PST - ppublish SO - Aerosol Sci Technol. 2017;51(3):311-316. doi: 10.1080/02786826.2016.1271110. Epub 2016 Dec 16.