Poly(1,5-Diaminonaphthalene)-Modified Screen-Printed Device for Electrochemical Lead Ion Sensing

Poly(1,5-diaminonaphthalene) has been electropolymerized on the screen-printed device with a three-electrode configuration. The modified electrodes have developed as new electrode for electrochemical determination of trace levels lead ions (Pb2+). poly(1,5-diaminonaphthalene) film prevents deposition Pb2+ into surface defects bare carbon and possesses sensitivity to heavy metal thanks amine secondary amino groups polymer chain. square wave anodic stripping voltammetry was applied detect ions, showing sharp peak linear range from 0.5 μg·L-1 5.0 ( R 2 = 0.9929 ). limit detection found be 0.30 μg·L-1. sensors were analysis in tap water sample matrix satisfactory results.