Workplace assessment of exposure to 2-ethoxyethanol.
Clapp DE; Smallwood AW; Moseley C; DeBord KE
Appl Ind Hyg 1987 Sep; 2(5):183-187
The possibility of using urinary monitoring as a tool for assessing exposure to 2-ethoxyethanol (110805) (2EE) was investigated, particularly under conditions where skin absorption was prevalent. The study was conducted at a facility where airborne concentrations of 2EE ranged up to 20 parts per million (ppm) in certain areas of the workplace throughout the week. These exposure levels had existed for at least 4 years. The company casted precision metal parts including castings for pumps, compressors, turbochargers, and devices for surgical bone repair and replacement. During the process ceramic shells for casting the metal part were prepared by immersing a wax replica in a ceramic slurry which contained about 10 percent 2EE by volume. Between dips the shells were suspended or stored on open racks to dry. The room air was kept in constant motion through the use of fans. The highest open air area samples found at this time approached 20ppm. Personal air samples ranged up to 24ppm. Hand dippers had the highest continual exposure levels ranging from 12 to 19ppm over their entire work shift. Blood samples revealed no detectable levels of 2EE. Urine monitoring of exposed workers did reveal positive evidence of 2EE absorption. The hand dippers results were higher than the supervisor, which agreed with the lower exposure experienced by the supervisor during the workshift. Samples collected from nonexposed workers were consistently negative. The authors recommended the use of the urinalysis for monitoring exposure to 2EE in the workplace.
NIOSH-Author; Metal-workers; Hydrocarbons; Organic-vapors; Ethanols; Skin-exposure; Skin-absorption; Biological-monitoring
Applied Industrial Hygiene