Survey for N-Nitroso Compounds at Chrysler Mound Road Engine Plant, Detroit, Michigan.
NIOSH 1978 Jun:19 pages
A study was undertaken to determine the extent of N-nitroso contamination in a Chrysler Engine Plant (SIC-3714) where metalworking cutting fluids were utilized. Three stock metalworking fluids, eight diluted metalworking fluids and six air samples were collected on the first visit to the facility. Upon detecting trace quantities of N-nitroso diethanolamine (1116547) (NDE1A) in one of the air samples, five additional air samples were collected around the machine from which positive results were obtained. Air samples were collected through midget impingers at ambient temperature and extracted with ethyl-acetate. Bulk fluids were extracted with ethyl- acetate and acetone. Air and fluid samples were analyzed via high performance liquid chromatography thermal energy analyzer. NDE1A was the only N-nitroso compound found in the metalworking fluids; highest concentrations were present in semisynthetic and synthetic fluids as compared to soluble oil type fluids. NDE1A decomposed to non-N-nitroso compounds when metalworking fluids were used in the machine. Consequently, NDE1A concentrations in the diluted fluids were generally less than 5 micrograms per milliliter. NDE1A was not found in the general ambient atmosphere of the facility except for approximately 10 nanograms per cubic meter near one machine. The daily exposure to NDE1A by the operator was about 30 nanograms. The authors conclude that N-nitroso contamination in the facility was at a nonhazardous level.
NIOSH-Author; NIOSH-Survey; Field-Study; IWS-74-53-11; Region-5; Nitro-compounds; Health-surveys; Metal-workers; Automotive-industry; Automotive-engines; Industrial-hygiene; Air-sampling;
NTIS Accession No.
Thermo Electron Research Center, Waltham, Massachusetts, NIOSH, Cincinnati, Ohio, 19 pages, 7 references