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Occupational exposure science.

John W Cherrie1,2

  • 1Institute of Occupational Medicine, Edinburgh, United Kingdom.

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Summary
This summary is machine-generated.

This commentary reviews 30 years of occupational exposure science, emphasizing the concept of uptake—the mass of hazardous substance entering the body. A new paradigm centered on uptake could offer significant advantages for workplace exposure assessment.

Keywords:
behaviordermalexposure routesingestioninhalationocularskintheoryuptake

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Area of Science:

  • Occupational health and safety
  • Exposure science
  • Industrial hygiene

Background:

  • Occupational exposure science has evolved significantly over the past 30 years.
  • Understanding of inhalation, dermal, inadvertent ingestion, and ocular exposure routes in the workplace has advanced.
  • The definition of "exposure" influences measurement strategies and data collection in workplace investigations.

Purpose of the Study:

  • To describe developments in occupational exposure science over the last three decades.
  • To highlight the theoretical underpinnings of various exposure routes and their interconnections.
  • To propose a new conceptual framework for exposure assessment centered on uptake.

Main Methods:

  • Review and synthesis of theoretical developments in occupational exposure science.
  • Analysis of the concept of "exposure" and its implications for measurement.
  • Discussion of the unifying concept of "uptake" as a central metric.

Main Results:

  • The definition of exposure dictates the scope of workplace investigations and recorded data.
  • Uptake, defined as the mass of hazardous substance entering the body via different routes, is a unifying concept.
  • Measurement of uptake is currently feasible for inhalation but requires further development for other routes.
  • Worker behavior has not been adequately integrated into exposure assessment despite its importance.

Conclusions:

  • A paradigm shift towards an "uptake"-centered approach in occupational exposure science is advocated.
  • This new paradigm promises significant advantages and novel insights into workplace exposures.
  • Further methodological advancements are needed to enable uptake measurement across all exposure routes.