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Abbreviations
ACGIH American Conference of Governmental Industrial Hygienists
AEGL acute exposure guideline level
AIHA American Industrial Hygiene Association
ATSDR Agency for Toxic Substances and Disease Registry
BMCL05 benchmark concentration with its lower confidence limit at a 5% extra risk
BZ 3-quinuclidinyl benzilate
ºC degree Celsius
CAC chloroacetyl chloride
CEELs community emergency exposure levels
COPD chronic obstructive pulmonary disease
DCA dichloroacetic acid
DCAC dichloroacetyl chloride
DCE dichloroethylene
EHS extremely hazardous substances
EPA U.S. Environmental Protection Agency
ERPG emergency response planning guidelines
h hour
HN-1, -2, -3 nitrogen mustards
IARC International Agency for Research on Cancer
ICt50 concentration and time of a substance causing incapacitation in 50% of an exposure
population
IDLH immediately dangerous to life or health
IRIS Integrated Risk Information System
L liter
LC01 lethal concentration to 1% of the exposed population
LCL lower confidence limit
LC50 lethal concentration to 50% of the exposed population
LCt50 concentration and time of a substance that is lethal to 50% of an exposed population
LOA level of odor awareness
LOAEL lowest observed adverse effect level
LOEL lowest observed effect level
mg/m3 milligrams/cubic meter
MF modifying factor
min minute
MITC methyl isothiocyanate
mmHg millimeters of mercury
MSD material safety and data sheet
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NAC National Advisory Committee on Acute Exposure Guideline Levels for
Hazardous Substances
NIOSH National Institute for Occupational Safety and Health
NOAEL no observed adverse effect level
NOEL no observed effect level
NRC National Research Council
OEL occupational exposure limit
PEL permissible exposure limit
POD point of departure
ppb parts per billion
ppm parts per million
RD50 concentration of a substance that reduced the respiratory rate of test organisms by
50%
REL recommended exposure limit
SOP standing operating procedures
STEL short-term exposure limit
TLV Threshold Limit Value
TRI Toxics Release Inventory
TSD technical support document
TWA time-weighted average
μg microgram
UF uncertainty factor
URL uniform resource locator
WEEL workplace environmental exposure limit
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