Dichloromethane levels in air after application of paint removers

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Abstract
The NIOSH charcoal tube method and a glass bulb grab sampling method were used to determine dichloromethane levels in the air of a room used for testing six paint removers. Dichloromethane and methanol were major components of five brush-on paint removers and an aerosol spray remover contained dichloromethane, toluene, and propane as major constituents. The grab sampling method, which showed sampling efficiency of 95%, precision of better than ±5%, and a detection limit of 0.01 g/m3, was useful in determining time profiles for dichloromethane levels in air. Since home environment standards have not been established, grab sampling results and TWA (1 and 8 hr) values obtained by the NIOSH method were compared with the occupational exposure limits recommended by NIOSH and ACGIH. In a room with poor ventilation, the recommended occupational health limits can easily be exceeded, even with use of small quantities of paint remover.

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