Preparation and study of a naproxen ion-selective electrode

Novel Calixarene/Carbon Nanotubes Based Screen Printed Sensors for Flow Injection Potentiometric Determination of Naproxen

“…The recorded data (Table 1, Figure 5) recommended application of screen printed sensors incorporated with calix [4]arene (XIII) as sensing material in presence SWCNTs. The cited electrode showed Nernstian anionic compliance À61.0 AE 0.6 mV decade À1 in the concentration range from 10 À8 to 10 À2 mol L À1 and detection limit of 1.0 3 10 À8 mol L À1 which is more sensitive than reported electrodes [17][18][19][20][21][22]. Moreover, the cited electrodes were more sensitive than that recoded using heptakis(2,3,6-tri-O-benzoyl)-b-cyclodextrin as sensing material and tetraoctyl ammonium chloride as a lipophilic salt by more than 2 decades [52] and the coated graphite electrodes fabricated from the same sensing matrix.…”

“…To the best of our knowledge, few ion-selective electrodes (ISEs) for naproxen determination can be found in the literature using the membrane matrix modified with naproxen ion-pairs with different cationic surfactant or mercury (I) [17][18][19][20][21]. More recently, naproxenate screen printed potentiometric sensors incorporated with hyamine was published [22].…”

Potentiometric Membrane Sensors for Levamisole Determination

“…Potentiometric determination based on ionselective electrodes (ISEs) offers several advantages such as speed and ease of preparation and procedures, simple instrumentation, relatively fast response, wide dynamic range, reasonable selectivity and low cost [10][11][12][13][14][15][16][17][18][19] . The present work establishes a new simple, accurate, rapid and reproducible technique for determination of levamisole, by construction and electrochemical evaluation of novel potentiometric sensors.…”

“…The solubility of IPs should be sufficiently low in aqueous phase; otherwise they will be washed out from the membranes, and at the same time, high in the membrane phase; otherwise, it will be difficult to obtain a homogeneous membrane. Previously, we analyzed the applicability of ISEs based on ion-pair as electrode-active substances in analysis of pharmaceuticals [12][13][14][15][16][17][18][19] .…”

“…The description of the electrode construction and membrane phase preparation was presented in earlier papers [12][13][14][15][16][17][18][19] . The sensing membrane was prepared by mixing 70 mg of PVC powder and 15 mg of Lev + SbI 4 -or Lev + BiI 4 -with 0.12 mL of plasticizers.…”