Abstract
AbstractA novel nickel phthalocyanine/iron oxide nanoparticle (NiTsPc/ION) nanocomposite electrode is proposed for the voltammetric detection of ethinyl estradiol. The method shows a wide linear range (0.07–30 μmol L−1, R2 >0.99), sensitivity of 0.308 μA cm−2/μmol L−1 and limit of detection of 7.8 nmol L−1 (3.3 Sb/b). Recoveries are above 95 % for quantification in tap and treatment plant water samples and synthetic urine. A single electrode can be used in seven consecutive runs (RSD=2.85 %) and responses of different electrodes vary only 7–9 %. The excellent sensing performance of the proposed sensor is ascribed to its porous morphology and efficient charge‐transfer between ION and NiTsPc.
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