Chemical Analyses of Particle Filter Deposits* - Aerosols: Measurement, Dosimetry, and Health Effects - page 184

Chemical
analyses a

Teflon-
membrane
filter

Quartz-fiber
filter

Quartz-fiber
filter

Citric acid-
impregnated
cellulose-fiber
filter

K 2 CO 3 -
impregnated
cellulose-fiber
filter

Backup quartz-
fibre filter for
artifact

Nuclepore
polycarbonate-
membrane
filter

XRF for
elements b

½ Filter
extracted in 15
mL distilled-
deionized
water (DDW)

~1-2
cm 2
punch

½ Filter
extracted in 10
mL DDW

½ Filter extracted
in 10 mL 1:11
hydrogen
peroxide: DDW
dilution

CCSEM
analysis for
single particle
morphology
and elements

0.5 cm 2
punch

0.5 cm 2 punch

Entire filter
acid digestion

OC, EC, carbon
fractions,
and carbonate
by thermal/optical
carbon analyzer

Organic
compounds
by TD-GC-
MS c

Ammonia by
AC

Sulfur dioxide by
IC

OC, EC, carbon
fractions, and
carbonate
by thermal/optical
carbon analyzer

ICP-MS for
rare-earth
elements and
isotopes d

5 mL for total
WSOC by
thermal/optical
carbon or TOC
analyzers

Filtration of 3 mL through 0.2 µm PTFE
syringe filter

7 mL for anions and cations e
by IC, AC, and AAS

1 mL for three WSOC
classes: NC, MDA, and PA
by HPLC-IEC measurement
with UV/Vis detector at 254
nm, followed by TOC
analysis

1 mL for NC speciation
by IC-PAD for
carbohydrates

1 mL for MDA
speciation by IC with
conductivity detector
for organic acids