Add time:09/08/2019         Source:sciencedirect.com

Three novel Amprolium (cas 121-25-5) HCl (AMP)-selective electrodes were investigated with 2-nitrophenyl octylether as a plasticiser in a polymeric matrix of polyvinyl chloride (PVC). Sensor I was fabricated using potassium tetrakis(4-chlorophenyl) borate (TpClPB) as a cationic exchanger without incorporation of an ionophore. Sensor II used 2-hydroxy propyl β-cyclodextrin as an ionophore while sensor III used p-tert-butylcalix[8]arene as an ionophore. The three proposed sensors showed Nernestian response slopes of 29.2 ± 0.8, 29.3 ± 0.6 and 30.2 ± 0.4 mV/decade over the concentration range from 10–6 to 10–2 mol L−1, respectively. The proposed sensors displayed useful analytical characteristics for the determination of AMP in bulk powder, different pharmaceutical formulations, and chicken liver and in the presence of ethopabate. The proposed method was validated according to ICH guidelines for its linearity, accuracy, precision and robustness.

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