Yu-Ying Kuo1,2, Haijun Zhang3, Andreas C. Gerecke 1, Jing Wang 1,2

  • 1 Laboratory for Analytical Chemistry, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf CH-8600, Switzerland
  • 2 Institute of Environmental Engineering, ETH Zurich, Zurich CH-8093, Switzerland
  • 3 Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China

Received: February 25, 2013
Revised: April 20, 2013
Accepted: April 20, 2013
Download Citation: ||https://doi.org/10.4209/aaqr.2013.02.0059  

  • Download: PDF

Cite this article:
Kuo, Y.Y., Zhang, H., Gerecke, A.C. and Wang, J. (2014). Chemical Composition of Nanoparticles Released from Thermal Cutting of Polystyrene Foams and the Associated Isomerization of Hexabromocyclododecane (HBCD) Diastereomers. Aerosol Air Qual. Res. 14: 1114-1120. https://doi.org/10.4209/aaqr.2013.02.0059



Polystyrene foams have various applications, and cutting of them is usually performed with a heated metal wire. However, it has recently been reported that micro- and nanoparticles are released by such thermal cutting at a rate of a few billion particles per second, and these particles have a high likelihood of getting into the respiratory system of the operator. HBCD, as the additive flame retardant, can also be released and is mostly incorporated into the emitted particles.

The chemical composition of the emitted particles was investigated in more detail in this study. Samples were collected by a cascade impactor during the thermal cutting of expanded (EPS) and extruded (XPS) polystyrene foam. Samples from three impactor stages were analyzed by GC-MS for their overall chemical compositions. Both particulate and gaseous samples were analyzed by LC-MS/MS for the amount of HBCD diastereomers. It was found that larger particles contain a significantly higher percentage of compounds with high boiling points. The comparison of the HBCD diastereomer patterns in EPS foam and the emitted particles revealed that isomerization occurred among the HBCD diastereomers. The average α-HBCD fractions were 14% and 60% in the EPS foam and emitted particles, respectively. In contrast, the corresponding average γ-HBCD fractions were 83% and 30%. Thermal cutting led to the conversion of a large fraction of γ-HBCD to α-HBCD, which is relatively stable and bio-accumulative. The diastereomer conversion was much more significant in the particles than in the gas emitted from EPS thermal cutting.

Keywords: Aerosol; HBCD; Diastereomer isomerization; Polystyrene; Nanoparticle emission

Share this article with your colleagues 


Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

77st percentile
Powered by
   SCImago Journal & Country Rank

2022 Impact Factor: 4.0
5-Year Impact Factor: 3.4

Call for Papers for the special issue on: "Carbonaceous Aerosols in the Atmosphere"

Aerosol and Air Quality Research partners with Publons

CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit
CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.