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Characterizing Dust from Cutting Corian®, a Solid-Surface Composite Material, in a Laboratory Testing System.

Chaolong Qi1, Alan Echt2, Taichi K Murata2

  • 1Division of Applied Research and Technology, Engineering and Physical Hazards Branch, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 1090 Tusculum Ave, MS: R5, Cincinnati, OH 45226, USA hif1@cdc.gov.

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Cutting Corian® generates airborne dust, primarily aluminum hydroxide. Ultrafine particles, though small, are highly concentrated and warrant further study for potential lung effects.

Keywords:
Corian®aluminum hydroxidedustpulmonary fibrosissolid-surface composite

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Area of Science:

  • Occupational Health
  • Materials Science
  • Environmental Science

Background:

  • Corian® is a widely used solid-surface composite material.
  • Cutting composite materials can generate airborne dust, posing potential health risks.
  • Characterizing dust composition and particle size is crucial for risk assessment.

Purpose of the Study:

  • To characterize the airborne dust generated from cutting Corian® using a circular saw.
  • To determine the mass concentration, respirable fraction, and elemental composition of the dust.
  • To analyze the particle size distribution and identify potential health concerns.

Main Methods:

  • Laboratory testing using an automatic system to cut Corian® with a circular saw.
  • Air sampling via filters and direct-reading instruments.
  • Gravimetric analysis for mass concentration and elemental analysis for composition.

Main Results:

  • Average total and respirable dust concentrations were 4.78 and 1.52 mg cm⁻³, respectively.
  • Airborne dust was predominantly aluminum hydroxide (86.0% total, 82.2% respirable).
  • Particle size distribution showed peaks for fine (1.05 µm) and ultrafine (11.8 nm) particles, with high ultrafine concentrations.

Conclusions:

  • Cutting Corian® generates significant amounts of airborne dust, mainly aluminum hydroxide.
  • The presence of numerous ultrafine particles necessitates further investigation into their pulmonary effects.
  • Occupational safety measures should consider the characteristics of dust generated during Corian® processing.