Lee, Seung-Bok Lee, Jun-Hyun Bae, Gwi-Nam 2024-01-20T20:01:36Z 2024-01-20T20:01:36Z 2021-09-02 2010-02 1388-0764 https://pubs.kist.re.kr/handle/201004/131759 Carbon nanotubes (CNTs) are representative-engineered nanomaterials with unique properties. The safe production of CNTs urgently requires reliable tools to assess inhalation exposure. In this study, on-line aerosol instruments were employed to detect the release of multi-walled CNTs (MWCNTs) in workplace environments. The size responses of aerosol instruments consisting of both a scanning mobility particle sizer (SMPS) and an aerodynamic particle sizer (APS) were examined using five types of commercial MWCNTs. A MWCNT solution and powder were aerosolized using atomizing and shaking methods, respectively. Regardless of the phase and purity, the aerosolized MWCNTs showed consistent size distributions with both SMPS and APS. The SMPS and APS measurements revealed a dominant broad peak at approximately 200-400 nm and a distinct narrow peak at approximately 2 mu m, respectively. Comparing with field application of the two aerosol instruments, the APS response could be a fingerprint of the MWCNTs in a real workplace environment. A modification of the atomizing method is recommended for the long-term inhalation toxicity studies. English SPRINGER SURFACE-AREA INHALATION TOXICITY NANOPARTICLE EXPOSURE MASS CLASSIFICATION PARTICLES SAFE Size response of an SMPS-APS system to commercial multi-walled carbon nanotubes Article 10.1007/s11051-009-9745-4 1 JOURNAL OF NANOPARTICLE RESEARCH, v.12, no.2, pp.501 - 512 JOURNAL OF NANOPARTICLE RESEARCH 12 2 501 512 scie scopus 000275318700013 2-s2.0-77955770570 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article NANOPARTICLE EXPOSURE MASS CLASSIFICATION PARTICLES SAFE SURFACE-AREA INHALATION TOXICITY Aerosol Atomizing EHS Inhalation exposure Multi-walled carbon nanotubes (MWCNTs) Occupational health Shaking Size response