298 Nuclear Forensic Analysis
Similarly, textile bers are identied and compared primarily through optical and
F
TIR
m
icroscopies.
H
owever,
o
ther
f
orensic
me
thods
e
mployed
f
or
ber
a
nalysis
h
ave
i
ncluded
h
ot-stage
m
icroscopy
(
for
me
lting-point
d
eterminations),
s
olvent
s
olu-
bility
tests, pyrolysis GC, TGA, and TLC or HPLC (for dye analyses).
Fibers
a
re
p
rincipally
c
lassied
a
s
nat
ural
o
r
m
an-made.
N
atural
bers
a
re
f
urther
divided into vegetable (e.g., cotton, linen), animal (wool, silk), and mineral (asbestos)
t
ypes.
A
nthropogenic
bers
a
re
d
iverse
a
nd
m
any
a
nd
e
ncompass
g
eneric
cat
ego-
ries
s
uch
a
s
r
ayon,
p
olyester,
n
ylon,
uorocarbon
(
Teon),
a
crylic,
a
ramid
(
Kevlar),
o
len
(
polyethylene,
p
olypropylene),
a
nd
s
pandex.
I
n
a
ddition
t
o
ber
i