Journal
SENSORS
Volume 15, Issue 5, Pages 10255-10270Publisher
MDPI
DOI: 10.3390/s150510255
Keywords
SPR; immunoassay; triazine pesticide analysis; bovine milk
Funding
- Sapienza University of Rome
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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.
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