TY - JOUR
T1 - Label-free detection of microcystin-LR in waters using real- Time potentiometric biosensors based on single-walled carbon nanotubes imprinted polymers
AU - Queirós, Raquel B.
AU - Noronha, João Paulo
AU - Marques, Paulo V. S.
AU - Sales, Maria Goreti Ferreira
N1 - info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F49072%2F2008/PT#
PY - 2012
Y1 - 2012
N2 - Microcystin-LR (MC-LR) is a dangerous toxin found in environmental waters, quantified by high performance liquid chromatography and/or enzyme-linked immunosorbent assays. Quick, low cost and on-site analysis is thus required to ensure human safety and wide screening programs. This work proposes label-free potentiometric sensors made of solid-contact electrodes coated with a surface imprinted polymer on the surface of Multi-Walled Carbon NanoTubes (CNTs) incorporated in a polyvinyl chloride membrane. The imprinting effect was checked by using non-imprinted materials. The MC-LR sensitive sensors were evaluated, characterized and applied successfully in spiked environmental waters. The presented method offered the advantages of low cost, portability, easy operation and suitability for adaptation to flow methods.
AB - Microcystin-LR (MC-LR) is a dangerous toxin found in environmental waters, quantified by high performance liquid chromatography and/or enzyme-linked immunosorbent assays. Quick, low cost and on-site analysis is thus required to ensure human safety and wide screening programs. This work proposes label-free potentiometric sensors made of solid-contact electrodes coated with a surface imprinted polymer on the surface of Multi-Walled Carbon NanoTubes (CNTs) incorporated in a polyvinyl chloride membrane. The imprinting effect was checked by using non-imprinted materials. The MC-LR sensitive sensors were evaluated, characterized and applied successfully in spiked environmental waters. The presented method offered the advantages of low cost, portability, easy operation and suitability for adaptation to flow methods.
KW - Biosensors
KW - CNTs
KW - MC-LR
KW - Potenciometric
UR - http://www.scopus.com/inward/record.url?scp=84891723876&partnerID=8YFLogxK
U2 - 10.1016/j.proeng.2012.09.258
DO - 10.1016/j.proeng.2012.09.258
M3 - Conference article
AN - SCOPUS:84891723876
SN - 1877-7058
VL - 47
SP - 758
EP - 761
JO - Procedia Engineering
JF - Procedia Engineering
T2 - 26th European Conference on Solid-State Transducers, EUROSENSOR 2012
Y2 - 9 September 2012 through 12 September 2012
ER -