A new surface plasmon resonance immunosensor for triazine pesticide determination in bovine milk: a comparison with conventional amperometric and screen-printed immunodevices.
A detailed comparison was made of the analytical features of a new Surface Plasmon Resonance (SPR) immunodevice for triazine pesticide determination with those of two other amperometric (conventional and screen-printed) immunosensors and the advantages and disadvantages of the SPR method were thoroughly investigated. For conventional amperometric and screen-printed devices, "competitive" assays were used; conversely, the SPR transduction technique allowed a "direct" measurement format to be used. As far as the main analytical data are concerned, the SPR method does not seem to offer substantial advantages. Nevertheless the measurement time is much shorter and the measurement itself much easier to perform. Lastly several applications and recovery tests were carried out on bovine milk samples, before and after spiking, to check for triazine pesticides in the samples, obtaining satisfactory results.
Department of Chemistry, Sapienza University of Rome, P. Le Aldo Moro 5, 00185 Rome, Italy. mauro.tomassetti@uniroma1.it.
Mauro
M
Tomassetti
Department of Chemistry, Sapienza University of Rome, P. Le Aldo Moro 5, 00185 Rome, Italy. elisabettamartini@libero.it.
Elisabetta
E
Martini
Department of Chemistry, Sapienza University of Rome, P. Le Aldo Moro 5, 00185 Rome, Italy. luigi.campanella@uniroma1.it.
Luigi
L
Campanella
Department of Chemistry and Drug Technologies, Sapienza University of Rome, P. Le Aldo Moro 5, 00185 Rome, Italy. gabriele.favero@uniroma1.it.
Gabriele
G
Favero
Department of Chemistry and Drug Technologies, Sapienza University of Rome, P. Le Aldo Moro 5, 00185 Rome, Italy. gabriella.sanzo@uniroma1.it.
Gabriella
G
Sanzó
Department of Chemistry and Drug Technologies, Sapienza University of Rome, P. Le Aldo Moro 5, 00185 Rome, Italy. franco.mazzei@uniroma1.it.
Franco
F
Mazzei
D000818:Animals; D015374:Biosensing Techniques / Q000379:methods*; D002417:Cattle; D004563:Electrochemistry / Q000379:methods*; D008892:Milk / Q000737:chemistry*; D010575:Pesticides / Q000032:analysis*; D020349:Surface Plasmon Resonance / Q000379:methods*; D014227:Triazines / Q000032:analysis*
D010575:Pesticides; D014227:Triazines