Industrial hygiene sampling and analytical monitoring methods for cadmium (7440439) dust were validated. Procedures were established under the joint NIOSH/OSHA Standards Completion Program for Set-W. A 2 year study developed standards for approximately 400 air contaminants. Other requirements for standards completion are as listed in the Occupational Safety and Health Act of 1970. Methods developed were suitable for measuring airborne concentrations of these substances. In addition to the permissible exposure limit, standards included appropriate provisions for monitoring worker exposure, engineering control, personal protection, employee training, medical surveillance, and record keeping. Analytical methods developed were not considered the only methods that could be used to evaluate worker exposure. Other methods meeting accuracy requirements of the standards may also be used. The OSHA standard for cadmium dust was determined as 0.6 milligrams per cubic meter (mg/m3) ceiling, and 0.2mg/m3 time weighted average. Procedures used included filter collection, acid digestion, and atomic absorption.
Division of Physical Sciences and Engineering, NIOSH, Cincinnati, Ohio