Measurement of n-nitrosamine concentrations in NIOSH (National Institute for Occupational Safety and Health) Diesel Exhaust/Coal Dust Study

Technical Report · Sat Jan 01 00:00:00 EST 1983

OSTI ID:6424716

Choudhary, G; Foley, G D

Measurements were taken of N-nitrosamine concentrations present in the animal chambers used during the NIOSH Diesel Exhaust/Coal Dust study. Monthly, and sometimes weekly, samples were taken. Samples were taken over 2 to 7 hours. The following nitrosamines were sought: N-nitrosodimethylamine (NDMA), N-nitrosodiethylamine (NDEA), N-nitrosodipropylamine (NDPA), N-nitrosodibutylamine (NDBA), N-nitrosopiperidine (NPIP), N-nitrosopyrrolidine (NPYR), N-nitrosomorpholine (NMOR), and N-nitrosodiphenylamine (NDPhA). Only NDMA, NDEA, and NDPA were detected above the detection limits of the system, 6.0 nanograms/cubic meter. Precursors of nitrosamine formation were present in and prior to the exposure chambers, as indicated by the conversion of nitrosatable amines in samplers into the corresponding nitrosamine. The authors conclude that the observed nitrosamines appear to occur subsequent to diesel-exhaust emission from the engine.

• Research Organization: National Inst. for Occupational Safety and Health, Cincinnati, OH (USA). Div. of Physical Sciences and Engineering
• OSTI ID: 6424716
• Report Number(s): PB-87-163515/XAB
• Resource Relation: Other Information: See also PB--87-163507
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
54 ENVIRONMENTAL SCIENCES
01 COAL, LIGNITE, AND PEAT
COAL
DUSTS
DIESEL ENGINES
EXHAUST GASES
AIR POLLUTION
NITROSAMINES
EXPOSURE CHAMBERS
LABORATORY ANIMALS
HAZARDOUS MATERIALS
INDUSTRIAL MEDICINE
INSPECTION
TOXICITY
AMINES
CARBONACEOUS MATERIALS
ENERGY SOURCES
ENGINES
FLUIDS
FOSSIL FUELS
FUELS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MATERIALS
MEDICINE
NITROSO COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
POLLUTION
WASTES
330700* - Advanced Propulsion Systems- Emission Control
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
010900 - Coal
Lignite
& Peat- Environmental Aspects