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Characterizing applications, exposure risks, and hazard communication for engineered nanomaterials in construction.

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Area of Science:

  • Occupational Health and Safety
  • Materials Science
  • Nanotechnology

Background:

  • Engineered nanomaterials (ENMs) are increasingly used in construction products.
  • Potential health risks to construction workers from ENMs necessitate risk assessment.
  • Understanding ENM applications and exposure is crucial for worker protection.

Purpose of the Study:

  • To characterize the application of ENMs in construction products.
  • To identify potential worker exposure scenarios in the construction industry.
  • To evaluate the quality of safety data sheets (SDSs) for nano-enabled construction products.

Main Methods:

  • Data on nano-enabled construction products and their SDSs were collected from a public database.
  • Descriptive statistics were used to analyze trades, product types, and ENM categories.
  • A subset of SDSs was evaluated using modified NIOSH criteria, and transmission electron microscopy was used for bulk analysis.

Main Results:

  • Over 50 ENMs are reported in construction products, with polymers and metal oxides being most common.
  • Safety data sheets failed to identify ENM composition for 38.1% of products.
  • SDSs were rated as satisfactory for only 18% of products, with 70% needing significant improvement; bulk analysis confirmed discrepancies.

Conclusions:

  • Despite progress in understanding ENM risks in construction, SDS quality requires substantial improvement.
  • The study provides critical insights into ENM use, exposure risks, and hazard communication for construction workers.
  • Enhanced hazard communication is essential to mitigate risks associated with ENMs in construction.