Abstract
AbstractIn this work a conducting electrochemical sensing probe, Cr‐BDC‐NH2@PANI composite material (BDC=1,4‐benzenedicarboxylate), was successfully synthesized by polymerization of conducting polyaniline (PANI) around the Cr‐BDC‐NH2 material. The synthesized composite material was characterized by various analytical techniques. The Cr‐BDC‐NH2@PANI composite was successfully dropped cast on the surface of an inexpensive pencil graphite electrode (PGE) to detect the cadmium ions at trace level. The selectivity of proposed sensor observed towards cadmium ion is due to chelation mechanism operating between cadmium ions and amine groups. Under optimized condition, the proposed sensor is capable of measuring cadmium ions in aqueous as well as in human blood serum, plasma, and various water samples within the range of 0.50‐32.5 μg L−1 with the limit of detection (LOD) of 0.20 μg L−1. The Cr‐BDC‐NH2@PANI composite material modified sensor shows high affinity and no interference with real samples.
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