Journal article
Physicochemical Characterization of Simulated Welding Fumes from a Spark Discharge System
Aerosol science and technology, Vol.48(7), pp.768-776
07/03/2014
DOI: 10.1080/02786826.2014.925536
PMID: 25097299
Abstract
This study introduces a spark discharge system (SDS) as a way to simulate welding fumes. The SDS was developed using welding rods as electrodes with an optional coagulation chamber. The size, morphology, composition, and concentration of the fume produced and the concentration of ozone (O
3
) and nitrogen oxides (NO
X
) were characterized. The number median diameter (NMD) and total number concentration (TNC) of fresh fume particles were ranged 10-23 nm and 3.1×10
7
− 6×10
7
particles/cm
3
, respectively. For fresh fume particles, the total mass concentration (TMC) measured gravimetrically ranged 85-760 μg/m
3
. The size distribution was stable over a period of 12 h. The NMD and TNC of aged fume particles were ranged 81-154 nm and 1.5×10
6
−2.7×10
6
particles/cm
3
, respectively. The composition of the aged fume particles was dominated by Fe and O with an estimated stoichiometry between that of Fe
2
O
3
and Fe
3
O
4
. Concentrations of O
3
and NO
X
were ranged 0.07-2.2 ppm and 1-20 ppm, respectively. These results indicate that the SDS is capable of producing stable fumes over a long-period that are similar to actual welding fumes. This system may be useful in toxicological studies and evaluation of instrumentation.
Copyright 2014 American Association for Aerosol Research
Details
- Title: Subtitle
- Physicochemical Characterization of Simulated Welding Fumes from a Spark Discharge System
- Creators
- Jae Hong Park - Department of Occupational and Environmental Health, University of IowaImali A Mudunkotuwa - Department of Chemistry, University of IowaJong Sung Kim - Interdisciplinary Graduate Program in Human Toxicology, University of IowaAditya Stanam - Interdisciplinary Graduate Program in Human Toxicology, University of IowaPeter S Thorne - Interdisciplinary Graduate Program in Human Toxicology, University of IowaVicki H Grassian - Interdisciplinary Graduate Program in Human Toxicology, University of IowaThomas M Peters - Interdisciplinary Graduate Program in Human Toxicology, University of Iowa
- Resource Type
- Journal article
- Publication Details
- Aerosol science and technology, Vol.48(7), pp.768-776
- DOI
- 10.1080/02786826.2014.925536
- PMID
- 25097299
- NLM abbreviation
- Aerosol Sci Technol
- ISSN
- 0278-6826
- eISSN
- 1521-7388
- Publisher
- Taylor & Francis
- Language
- English
- Date published
- 07/03/2014
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Civil and Environmental Engineering; Occupational and Environmental Health; Chemistry; Chemical and Biochemical Engineering
- Record Identifier
- 9983997449202771
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