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pubblicazioni - Presentazione

Surface plasmon resonance and molecular imprinted polymer in a plastic optical fiber. The case of Furfural detection in Power Transformer Oil

pubblicazioni - Presentazione

Surface plasmon resonance and molecular imprinted polymer in a plastic optical fiber. The case of Furfural detection in Power Transformer Oil

In questo lavoro si descrive un sensore chimico ottico (POF – MIP ) , basato sull’impiego congiunto di un polimero a stampo molecolare ( MIP ) e una fibra ottica di plastica ( POF ), per il monitoraggio di furfurolo ( furan – 2 – carbaldeide ) in olio per trasformatori.

This work presents a new solution for an on line detection of 2-FAL in insulating oil in power transformers. This chemical agent, 2-FAL, is considered one of main indicators of degradation of the solid insulating system (mainly based on cellulose) of power transformers. The proposed optical approach is based on a layer of molecular imprinted polymer (MIP), highly selective for 2-FAL, and on plastic optical fibers (POFs); surface plasmon resonance is exploited as mechanism of 2-FAL detection.

This optical sensor has been effectively tested in real oil samples collected from aged electrical equipment, removed from service. The measured 2-FAL concentration is in good agreement with results of high pressure liquid chromatography (HLPC), confirming the good selectivity of the proposed sensor.

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