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

Technical Report ·
OSTI ID:6424716
;

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
Country of Publication:
United States
Language:
English

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Related Subjects

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