95% CI	95% confidence interval
AIC	Akaike’s information criterion
AM	arithmetic mean
BMC	benchmark concentration
BMCh	benchmark concentration-human
BMCL	benchmark concentration (95% CI Lower Bound)
BMCU	benchmark concentration (95% CI Upper Bound)
BMD	benchmark dose
BMDL	benchmark dose (95% CI lower bound)
BMDU	benchmark dose (95% CI upper bound)
CNTs	Carbon nanotubes
EFinter	interspecies extrapolation factor
EFintra	intraspecies extrapolation factor
ES	exposure scenario
EXP	exposure data distribution
GM	geometric mean
GNPs	graphene nanoplatelets
GSD	geometric standard deviation
HBGV	health-based guidance value
LOAEL	lowest-observed adverse effect level
MN	manufactured (engineered) nanomaterial
MWCNTs	multiwalled carbon nanotubes
MT	measurement technique
NOAEL	no-observed-adverse-effect level
NWH	non-working hours
OEL	occupational exposure level
RA	risk assessment
RCR	risk characterization ratios
REL	recommended exposure limit
SD	standard deviation
SWCNTs	single-walled carbon nanotubes
TWA	time-weighted average
UFi	uncertainty factor
WE	work events
WH	working hours