Oxidized thin aluminum films used as the polarized liquid-liquid interface support for norcocaine detection

Electroanalytical characterization of clozapine at the electrified liquid–liquid interface and its detection in soft and hard drinks

“…The organic electrolyte dissolved in the organic phase is prepared according to an earlier report. 42 In brief, the bis(triphenylphosphoranylidene) ammonium tetrakis(4-chlorophenyl)borate (BTTPA + TPBCl − ) was precipitated and purified from a mixture of 0.1 g mL −1 BTPPACl and 0.1 g mL −1 KTPBCl in 1 : 1 MeOH : H 2 O (v/v). Purification was performed by filtration and recrystallization from acetone.…”

Electrochemical screening of selected β-blockers at a polarized liquid–liquid interface

“…Additionally, by analyzing positive and negative peak current values, we determined the diffusion coefficients for all investigated β-blockers, which provided insights into the diffusivity of analytes in both the aqueous and organic phases. The peak current values were plotted against the square root of the increasing scan rates (5,10,15,20,25,30, and 35 mV s −1 ) at a fixed concentration of the β-blocker. The rearranged Randles-Ševčík equation, is represented as:…”

“…Hydrophilic salts such as NaCl and LiCl, and hydrophobic tetrabutylammonium tetraphenylborate (TBATPB) are examples of the electrolytes that can be dissolved in the aqueous and the organic phases, respectively. 29,30 The use of the LLI has noticeable advantages as compared to conventional solid-liquid interfaces (e.g., metallic electrode coming into contact with electrolyte solution) since it can be considered a defect-free, self-healing system with detection that is not limited to oxidation/reduction processes. 31,32 ITIES-based electrochemical sensors have been used for the determination of biologically active substances including pharmaceuticals and drugs.…”

“…31,32 ITIES-based electrochemical sensors have been used for the determination of biologically active substances including pharmaceuticals and drugs. 30,[33][34][35][36] Also, several published works described β-blocker determination at the ITIES. The work by Courtney J.…”

Magnetic solid phase extraction of Sunitinib malate in urine samples assisted with mixed hemimicelle and spectrophotometric detection

“…An accurate and sensitive procedure such as sample purification and preconcentration are essential prior to instrumental analysis [19][20][21][22][23][24][25][26][27] . Several pre-treatment methods have been employed for the extraction of Sunitinib malate, including LLE, SPE, and CPE [28][29][30][31] .…”