A proposed threshold exposure for airborne asbestos

Quoted from http://oem.bmj.com/content/69/3/227.1.extract

Occup Environ Med 2012;69:227-228 doi:10.1136/oemed-2011-100225


A proposed threshold exposure for airborne asbestos

  1. John H Lange,
  2. G Mastrangelo,
  3. L Cegolon

+ Author Affiliations

  1. Department of Environmental Medicine and Public Health University of Padova Via Giustiniani 235128 Padova, Italy
  1. Correspondence to John H Lange, Envirosafe Training and Consultants, Inc., P.O. Box 114022, Pittsburgh, PA 15239, USA; jhlange1@hotmail.com
  • Accepted 6 July 2011
  • Published Online First 17 August 2011

The article by Clin et al1 provides additional information for a dose–response relationship between asbestos and cancer. Information where a response curve changes the effect as observed from the background is critical in establishing a safe exposure limit (threshold-exposure/concentration-dose). Some investigators have reported that this threshold is around 25fibre/ml-years, although for some members of an exposed group this may be lower. However, a cumulative no-effect value does not provide information applicable for practical everyday use when monitoring worker exposure.

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