
November 11, 2014 15:49 PSP Book - 9in x 6in 06-Serge-Cosnier-c06
166 Gold and Silver Nanoparticles for Electrochemical Immunosensors
Table 6.2 Example electrochemical immunoassays for α-fetoprotein
Base
electrode
Preparation of electrode
surface
a
Preparation of unbound
antibody
b
Signal generation
Range
/ng mL
−1
LOD
c
/ng mL
−1
Reference
CP
(graphite,
paraffin)
Ai Base electrode unmodified O Au NP deposited on
dendrimer-functionalized
CoFe
2
O
4
NP
Functionalized NP located on
base electrode with aid of mag-
net
0.8–120 0.3 [143]
Y Anti-AFP deposited on mag-
netic core–shell–shell–gold NP
Change in open-circuit potential
before and after addition of AFP
Screen-
printed
carbon
Ai