<s>
A	O
hydrogen	B-Algorithm
sulfide	I-Algorithm
sensor	I-Algorithm
or	O
H2S	O
sensor	O
is	O
a	O
gas	O
sensor	O
for	O
the	O
measurement	O
of	O
hydrogen	O
sulfide	O
.	O
</s>
<s>
The	O
H2S	O
sensor	O
is	O
a	O
metal	B-Architecture
oxide	I-Architecture
semiconductor	I-Architecture
(	O
MOS	O
)	O
sensor	O
which	O
operates	O
by	O
a	O
reversible	O
change	O
in	O
resistance	O
caused	O
by	O
adsorption	O
and	O
desorption	O
of	O
hydrogen	O
sulfide	O
in	O
a	O
film	O
with	O
hydrogen	O
sulfide	O
sensitive	O
material	O
like	O
tin	O
oxide	O
thick	O
films	O
and	O
gold	O
thin	O
films	O
.	O
</s>
<s>
2004	O
-	O
a	O
nanocrystalline	O
SnO2	O
–	O
Ag	O
on	O
ceramic	B-Architecture
wafer	I-Architecture
sensor	O
is	O
reported	O
.	O
</s>
