Kim, Won-Geun Yong, Sang-Don Yook, Se-Jin Ji, Jun Ho Kim, Kyung-Hwan Bae, Gwi-Nam Chung, Eun-Kyo Kim, Jeong Ho 2024-01-20T00:31:17Z 2024-01-20T00:31:17Z 2021-09-05 2017-10 0008-6223 https://pubs.kist.re.kr/handle/201004/122205 Elemental carbon (EC) can cause lung cancer or inflammation. Therefore, the objective of this study is to identify the possibility of real-time estimation of the EC concentration of multi-walled carbon nanotubes (MWCNTs) for workplace emission assessment. MWCNT aerosol particles were generated at a relatively constant rate over a period of 24 h, and the aerosolized MWCNTs were generally smaller than 1 mm. Online measurement was performed by using an aethalometer and a scanning mobility particle sizer (SMPS) to determine black carbon (BC) concentration and particle mass concentration of the MWCNTs, respectively. Off-line analysis was conducted according to the National Institute for Occupational Safety and Health (NIOSH) method 5040 to obtain EC concentration of the MWCNTs. Then, correlations among the BC concentration, particle mass concentration, and EC concentration were investigated for the MWCNT particles. The particle number concentration converted from the SMPS measurement data and the BC concentration measured by the aethalometer were found to be in linear relation with the filtersampling-based EC concentration, when the EC concentration of the MWCNTs was determined by the NIOSH method 5040. It is therefore anticipated that the use of the aethalometer and the SMPS can be of great help to the MWCNT emission assessment. c 2017 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD ASSESSMENT TECHNIQUE NEAT OCCUPATIONAL-EXPOSURE ASSESSMENT POTENTIAL INHALATION EXPOSURE ENGINEERED NANOMATERIALS PULMONARY TOXICITY SECONDARY MANUFACTURERS NANOFIBER PRIMARY MICE RESPONSES ASBESTOS Comparison of black carbon concentration and particle mass concentration with elemental carbon concentration for multi-walled carbon nanotube emission assessment purpose Article 10.1016/j.carbon.2017.06.050 1 CARBON, v.122, pp.228 - 236 CARBON 122 228 236 scie scopus 000407394200025 2-s2.0-85021444453 Chemistry, Physical Materials Science, Multidisciplinary Chemistry Materials Science Article ASSESSMENT TECHNIQUE NEAT OCCUPATIONAL-EXPOSURE ASSESSMENT POTENTIAL INHALATION EXPOSURE ENGINEERED NANOMATERIALS PULMONARY TOXICITY SECONDARY MANUFACTURERS NANOFIBER PRIMARY MICE RESPONSES ASBESTOS Multi-walled carbon nanotubes (MWCNTs) Particle mass concentration Black carbon (BC) Elemental carbon (EC) Real-time detection