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  • Effect of plasticizers on potentiometric response at 25° (O-NPOE

Effect of plasticizers on potentiometric response at 25° (O-NPOE

  • effect of a plasticizer on the detection limit of calcium

    Effect of a plasticizer on the detection limit of calcium

    Request PDF on ResearchGate Effect of a plasticizer on the detection limit of calcium-selective electrodes The effect of the plasticizer on the extended linear calibration curve and on the

  • (pdf) effect of plasticizer type on the potentiometric

    (PDF) Effect of plasticizer type on the potentiometric

    Effect of plasticizer type on the potentiometric selectivity coefficient of electrodes for nitarte ion determination constructed by using PVC as polymeric membrane.

  • effect of a plasticizer on the detection limit of calcium

    Effect of a plasticizer on the detection limit of calcium

    Effect of a plasticizer on the detection limit of calcium-selective electrodes. When the activities of Ca 2+ in the internal solution were lower than 10 −4 for DOS and 10 −6 for o-NPOE the response in the range below these activities becomes super-Nerstian. This corresponds to the excessive depletion of primary ions in the sample

  • potentiometric determination of ketotifen fumarate

    Potentiometric Determination of Ketotifen Fumarate

    3.2. Effect of Plasticizer. Five plasticizers, DOS, o-NPOE, DOP, TCP, and DBP were used to examine the optimization of the electrode with plasticizer. The results obtained showed that the response performances of the membranes prepared were rather different depending on the use of plasticizer.

  • chloride selective potentiometric sensor based on a newly

    Chloride selective potentiometric sensor based on a newly

    Jul 01, 2009· Chloride selective potentiometric sensor based on a newly synthesized hydrogen bonding anion receptor. We have tested several membranes of varying compositions of different plasticizers: (DBP, o-NPOE, DOP, Effect of pH on potential response of the chloride ion-selective sensor.

  • pvc membrane sensors for potentiometric determination

    PVC Membrane Sensors for Potentiometric Determination

    The effect of plasticizer composition was studied on the characteristic performances of AC-PVC membrane sensors. PVC membrane sensors were prepared using different plasticizers namely DBS, DOP, DBP, TCP and NPOE of different polarities which are usually used for the preparations of PVC membrane sensors.

  • citeseerx — effect of plasticizer type on the

    CiteSeerX — Effect of Plasticizer Type on the

    BibTeX @MISC{Superiores_effectof, author = {Estudios Superiores and Sección De Química Analítica and Autónoma México}, title = {Effect of Plasticizer Type on the Potentiometric Selectivity Coefficient ( KABPot) of Electrodes for Nitrate Ion Determination Constructed by Using

  • potentiometric response characteristics of membrane-based

    Potentiometric Response Characteristics of Membrane-Based

    A systematic study examining the effects of the membrane plasticizers bis(2-ethylhexyl) sebacate (DOS), 2-nitrophenyl octyl ether (NPOE), and 2-fluorophenyl nitrophenyl ether (FPNPE) on the potentiometric response and selectivity of the corresponding electrodes was performed.

  • chloride selective potentiometric sensor based on a newly

    Chloride selective potentiometric sensor based on a newly

    Fast and stable response, good reproducibility and long-term stability are demonstrated. The sensor shows response time of <10s; and can be used for about 3 months without any considerable divergence in their potential response. Selectivity coefficients determined with matched potential method (MPM) indicate high selectivity for chloride.

  • potentiometric sensing platform for selective

    Potentiometric sensing platform for selective

    Potentiometric sensing platform for selective determination of pregabalin in pharmaceutical formulations Eman H El-Naby* Author and article information Narcotic Department, National Center for Social and Criminal Research, PO Zamalek Post, 11561, Cairo, Egypt

  • potentiometric sensing platform for selective

    Potentiometric sensing platform for selective

    Potentiometric sensing platform for selective determination of pregabalin in pharmaceutical formulations Eman H El-Naby* Author and article information Narcotic Department, National Center for Social and Criminal Research, PO Zamalek Post, 11561, Cairo, Egypt

  • novel pvc membrane based alizarin sensor and its

    Novel PVC Membrane Based Alizarin Sensor and its

    CiteSeerX Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): A fabrication of new potentiometric alizarin sensor based on the use of alizarin Red-S-CTAB (ARS-CTAB) ion pair, in poly (vinyl chloride) (PVC) matrix, is reported. Effect of various plasticizers (o-NPOE, DBP, DEP, DOP, TBP, & CN) and cation excluder, Cetryltrimethylammoniumbromide (CTAB) was studied.

  • effect of phenols on the potentiometric response of a

    Effect of phenols on the potentiometric response of a

    Effect of phenols on the potentiometric response of a nitrate-ion-selective electrode Walton J. Cabrera,a Marcela Urzúa,b and Hernán E. Ríosb,∗ a Departamento de Química, Universidad Arturo Prat, Casilla 121, Iquique, Chile b Departamento de Química, Facultad de Ciencias, Universidad de Chile, Casilla 653, Correo Central, Santiago, Chile

  • effect of plasticizer type on the potentiometric

    Effect of plasticizer type on the potentiometric

    Cambiar navegación Repositorio Académico de la Universidad de Chile. Cambiar navegación

  • potentiometric determination of ketotifen fumarate

    Potentiometric Determination of Ketotifen Fumarate

    3.2. Effect of Plasticizer. Five plasticizers, DOS, o-NPOE, DOP, TCP, and DBP were used to examine the optimization of the electrode with plasticizer. The results obtained showed that the response performances of the membranes prepared were rather different depending on the use of plasticizer.

  • research article open access potentiometric detection

    RESEARCH ARTICLE Open Access Potentiometric detection

    RESEARCH ARTICLE Open Access Potentiometric detection and removal of copper using porphyrins Dana Vlascici1, Iuliana Popa2, Vlad A Chiriac1, Gheorghe Fagadar-Cosma3, Horia Popovici1 and Eugenia Fagadar-Cosma4* Abstract Background: Copper is an essential trace element with a great importance in industry, environment and biological

  • carbon paste and pvc electrodes for the flow injection

    Carbon paste and PVC electrodes for the flow injection

    Effect of the plasticizer electroactive material and plasticized with o-NPOE showed no Plasticizers play an important role in the behavior of the ISEs, response towards the DXM while those modified with different since they improve the solubility of the sensing materials and lower DXM-IPs gave Nernstian responses towards DXM with different the

  • the effect of produce conditions for preparation

    The Effect of Produce Conditions for Preparation

    3.3. Effect of plasticizer on the potential response Next five electrodes were prepared that contain the ion-pair modifier 10%, Graphite powder 50% and different plasticizer (mineral oil, DOS, DOA, o-NPOE, and DOP) 40% the results are summarized in Table 2.

  • (pdf) carboxylated poly(vinyl chloride) as a substrate

    (PDF) Carboxylated Poly(vinyl chloride) as a Substrate

    Among There is a very distinct and characteristic increase of these are the following: the relatively high bulk conductivity conductivity upon soaking in pH 7 carrier-free membranes of plasticized PVC-COOH compared with plasticized high with o-NPOE, compared with DOS plasticizer.

  • screen-printed microsensors using polyoctyl-thiophene (pot

    Screen-printed Microsensors Using Polyoctyl-thiophene (POT

    The plasticizer was selected to possess high lipophilicity, high molecular weight, low tendency for exudation from the membrane matrix, low vapor pressure and high capacity to dissolve the membrane ingradients. The use of ETH 500 additive in the membrane provided significant effect on the sensor response [29]. o-NPOE (¿ r = 24, M.wt. 435), DBS (¿

  • polymeric acetate-selective electrodes based on )-tetrakis

    Polymeric Acetate-Selective Electrodes Based on )-Tetrakis

    Polymeric Acetate-Selective Electrodes Bull. Korean Chem. Soc. 2002, Vol. 23, No. 10 1409 effect of pH on the potentiometric response of the novel Nernstian slope for acetate, o-NPOE was chosen as a proper plasticizer for use in the acetate-ISE membranes.

  • effect of plasticizers and ion-exchangers on the detection

    Effect of Plasticizers and Ion-Exchangers on the Detection

    Effect of Plasticizers and Ion-Exchangers on the Detection Limit of Tramadol-PVC Membrane Electrodes Hazem M. Abu Shawish a*, Nasser Abu Ghalwab, Ayoub R. Al-Daloua, Farid R. Zaggoutb, Salman M. Saadehc and Anwar A. Abou Assid a Chemistry Department, College of Sciences, Al-Aqsa University, Gaza, Palestine

  • the potentiometric studies on the effects of various

    The Potentiometric Studies on the Effects of Various

    The Potentiometric Studies on the Effects of Various Functional Groups Bull. Korean Chem. Soc. 2005, Vol. 26, No. 1 57 potentiometric response to anions was excellent at pH 5, the selectivity pattern for all three membrane electrode 2 PVC Ionophore 2 o-NPOE

  • preparation and properties of a new carbon paste iron

    Preparation and Properties of a New Carbon Paste Iron

    Preparation and Properties of a New Carbon Paste Iron Selective Electrodes and Their Applications. Effect of pH. The potentiometric response of the electrodes was found to be sensitive to pH changes. Thus, different plasticizers (DOP, DOS, o-NPOE and TCP) were used in the construction of Fe(II) ion selective electrodes to figure out the

  • polymeric acetate-selective electrodes based on )-tetrakis

    Polymeric Acetate-Selective Electrodes Based on )-Tetrakis

    Polymeric Acetate-Selective Electrodes Bull. Korean Chem. Soc. 2002, Vol. 23, No. 10 1409 effect of pH on the potentiometric response of the novel Nernstian slope for acetate, o-NPOE was chosen as a proper plasticizer for use in the acetate-ISE membranes.

  • effect of plasticizers and ion-exchangers on the detection

    Effect of Plasticizers and Ion-Exchangers on the Detection

    Effect of Plasticizers and Ion-Exchangers on the Detection Limit of Tramadol-PVC Membrane Electrodes Hazem M. Abu Shawish a*, Nasser Abu Ghalwab, Ayoub R. Al-Daloua, Farid R. Zaggoutb, Salman M. Saadehc and Anwar A. Abou Assid a Chemistry Department, College of Sciences, Al-Aqsa University, Gaza, Palestine

  • the potentiometric studies on the effects of various

    The Potentiometric Studies on the Effects of Various

    The Potentiometric Studies on the Effects of Various Functional Groups Bull. Korean Chem. Soc. 2005, Vol. 26, No. 1 57 potentiometric response to anions was excellent at pH 5, the selectivity pattern for all three membrane electrode 2 PVC Ionophore 2 o-NPOE

  • preparation and properties of a new carbon paste iron

    Preparation and Properties of a New Carbon Paste Iron

    Preparation and Properties of a New Carbon Paste Iron Selective Electrodes and Their Applications. Effect of pH. The potentiometric response of the electrodes was found to be sensitive to pH changes. Thus, different plasticizers (DOP, DOS, o-NPOE and TCP) were used in the construction of Fe(II) ion selective electrodes to figure out the

  • study of nitrite sensors based on co(iii)/rh(iii)-ligand

    Study of Nitrite Sensors Based on Co(III)/Rh(III)-Ligand

    the effect of membrane plasticizers, membranes 1-4 were made with o-NPOE, and membranes 5-7 were prepared with DOS..54 Fig. 2.5. Logarithm of potentiometric selectivity coefficients of Co-tBC-based polymer membrane electrodes (relative to nitrite) in comparison with

  • potentiometric response of polymeric liquid

    POTENTIOMETRIC RESPONSE OF POLYMERIC LIQUID

    potentiometric response of polymeric liquid membranes based on quaternary ammonium salts for nitrate ion determination MARÍA DE LOS ANGELES ARADA PÉREZ A,MEHRDAD YAZDANI-PEDRAM B* A Universidad de Oriente, Facultad de CNT, Departamento de Química, Patricio Lumumba S/N, Santiago de Cuba, 90500, Cuba.

  • potentiometric determination of mercury (ii) ion

    Potentiometric determination of mercury (II) ion

    The obtained calibration graph with various plasticizers indicated that o-NPOE as plasticizer resulted in highly sensitive membrane electrode with the highest slope and wider linear range related to the dielectric constant of these plasticizers (where ε value equals to 24, 3.88, 4.7, 5.2, and 17.6 for the tested plasticizers in the same order).

  • manganese(iii) porphyrin-based potentiometric sensors

    Manganese(III) Porphyrin-based Potentiometric Sensors

    Manganese(III) porphyrin-based potentiometric sensors for diclofenac assay in pharmaceutical preparations. The effect of different plasticizers and additives (anionic and cationic) on the potentiometric response was studied. DOP, DOS and o-NPOE and the potentiometric response of the resulting sensors was tested in the presence of

  • chemically modified carbon paste electrode

    Chemically Modified Carbon Paste Electrode

    A new chemically modified carbon paste electrode for cesium(I) ion determination based on potassium zinc hexacyan-oferrate (PZHCF) as an ionophore was prepared. The electrode exhibits a Nernstian response for Cs(I) ions over a wide concentration range from 1 × 10-6 to 1 × 10-1 mol·L-1 with a slope of 58 ± 0.5 mV·decade-1. It has a response time of about 35 s and can be used for a period

  • cyclodextrin-based potentiometric sensors for metformin

    Cyclodextrin-Based Potentiometric Sensors for Metformin

    tetrakis (4-florophenyl) borate (NaTFPB) as anionic site and o-nitrophenyloctyl ether (o-NPOE) as electrode plasticizer showed the best electroanalytical performances. The fabricated electrodes worked satisfactorily in the concentration range from 10-6 to 10-2 mol L-1 with detection limit reaching 7×10-6 mol L-1 and fast response time of 8 s

  • international journal of multidisciplinary and current

    International Journal of Multidisciplinary and Current

    International Journal of Multidisciplinary and Current Research ISSN: Effect of different plasticizer The effect of pH on the sensor potential was tested by Fig (3.1) as well as the linear potentiometric response over a wide range of Nickel ions concentration (3.9 x10-7-10-2 M)

  • potentiometric detection and removal of copper using

    Potentiometric detection and removal of copper using

    The effect of pH on the potentiometric response of the sensor was obtained by introducing the best obtained sensor in solutions of HNO 3, NaOH and different buffers, in a pH range from 1 to 12.92. Adsorption test. The copper removal experiments were carried out by stirring 5 mg of TAPP in 100 mL of copper solution at 25°C.

  • potentiometric determination of cyclizine by pvc membrane

    Potentiometric Determination of Cyclizine by PVC Membrane

    the effect of various plasticizers (i.e. DOP, DBP and o-NPOE) on the potential responses of the electrode were investigated. The response characters of membranes of various plasticizers are summarized in table 1 and table 2. The table 1 indicates that the electrode assembly based on Cy PT ionic pair with the composition of

  • a new potentiometric sensor for determination of cesium

    A New Potentiometric Sensor for Determination of Cesium

    O-NPOE DBP Fig. 2. Effect of different plasticizers on electrode response-50 0 50 100 150 200 250-7 -6 -5 -4 -3 -2 -1 0 Log Cs E (mV) Fig. 3. Calibration curve for Cesium ion-selective electrode 0 50 100 150 200 250 020 40 60 Time(S) E (mV) Fig. 4. Dynamic response of the electrode for ten-fold increase in Cesium concentration and a good

  • international journal of multidisciplinary and current

    International Journal of Multidisciplinary and Current

    International Journal of Multidisciplinary and Current Research ISSN: Effect of different plasticizer The effect of pH on the sensor potential was tested by Fig (3.1) as well as the linear potentiometric response over a wide range of Nickel ions concentration (3.9 x10-7-10-2 M)

  • potentiometric detection and removal of copper using

    Potentiometric detection and removal of copper using

    The effect of pH on the potentiometric response of the sensor was obtained by introducing the best obtained sensor in solutions of HNO 3, NaOH and different buffers, in a pH range from 1 to 12.92. Adsorption test. The copper removal experiments were carried out by stirring 5 mg of TAPP in 100 mL of copper solution at 25°C.

  • potentiometric determination of cyclizine by pvc membrane

    Potentiometric Determination of Cyclizine by PVC Membrane

    the effect of various plasticizers (i.e. DOP, DBP and o-NPOE) on the potential responses of the electrode were investigated. The response characters of membranes of various plasticizers are summarized in table 1 and table 2. The table 1 indicates that the electrode assembly based on Cy PT ionic pair with the composition of

  • a new potentiometric sensor for determination of cesium

    A New Potentiometric Sensor for Determination of Cesium

    O-NPOE DBP Fig. 2. Effect of different plasticizers on electrode response-50 0 50 100 150 200 250-7 -6 -5 -4 -3 -2 -1 0 Log Cs E (mV) Fig. 3. Calibration curve for Cesium ion-selective electrode 0 50 100 150 200 250 020 40 60 Time(S) E (mV) Fig. 4. Dynamic response of the electrode for ten-fold increase in Cesium concentration and a good

  • pvc membrane sensors for potentiometric determination

    PVC Membrane Sensors for Potentiometric Determination

    The potentiometric response for AC based on the use of AC-TPB or AC-PM ion pair complexes as a novel electroactive material and o-NPOE as a plasticizer in a PVC matrix were evaluated according to IUPAC recommendations Effect of plasticizer type on the characteristic performance of the sensor.

  • improving the response of copper(ii) selective pvc

    Improving the Response of Copper(II) Selective PVC

    Effect of N2S2 Donor Ligands Modification and Membrane Potentiometric response of copper(II) membrane electro-des based on SAPhTE; influence of different plasticizers (DOP and o-NPOE) and varying content of SAPhTE (2, 4 and 6 mg) Acta Chim. Slov. 2010, 57, 318–324 321 Brini} et al.: Improving the Response of Copper(II) Selective PVC

  • calcium(ii)-selective potentiometric sensor based on α

    Calcium(II)-selective potentiometric sensor based on α

    Apr 10, 2007· Read "Calcium(II)-selective potentiometric sensor based on α-furildioxime as neutral carrier, Sensors and Actuators B: Chemical" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

  • electrochemical sensors for determination of tranexamic

    Electrochemical sensors for determination of Tranexamic

    demonstrates Nernstian response (56.2 ±0.4 mV per decade) for tranexamic acid cations over a wide linear range from 1.0×10-5 to 1×10−2 M at 25oC with lower detection limit 8.0×10-6 M. The potentiometric response is independent from the pH of the solution in the pH range of 2.0-4.5.

  • copper(ii) ion selective pvc membrane electrode based on s

    Copper(II) ion selective PVC membrane electrode based on S

    polarity, viscosity and dielectric constant of plasticizer play a significant role in efforts to ensure the long and stable response by the sensor assembly.27 The influence of used plasticizer, namely: DES (ε = 5), DBS (ε = 4), DOP (ε = 7) and o-NPOE (ε = 24) is shown at Figure 3. The performance of membranes without the ionophores

  • a simple potentiometric sensor for rhodamine b

    A Simple Potentiometric Sensor for Rhodamine B

    Effect of pH. The influence of pH on the response of PVC was checked by recording the potential readings of the cell for solutions containing 10-3 . M RB at different pH values (pH 3–11). Variation of pH value was done by adding very small volumes of HCl and/or NaOH solution (0.1−1M of each) to the drug solution. Potentiometric T. itration.

  • thallium(i)-selective membrane potentiometric sensor based

    Thallium(I)-Selective Membrane Potentiometric Sensor Based

    ionophore (PD), 60 mg of plasticizer o-NPOE, 30 mg of powdered PVC and 5.0 mg of TlNO due to the effect of the hydroxyl ion, (TlOH) may be formed. At lower pH values the electrode responds to H+ ions. Selectivity: The important parameter of many potentiometric ion is response to the primary ion in the presence of the other ions presence in

  • manoj kumar pal academia.edu

    Manoj Kumar Pal Academia.edu

    Manoj Kumar Pal studies E-learning, Web 2.0, and Serious Games. The addition of potassium tetrakis(4-chlorophenyl) borate and various plasticizers, viz., o-NPOE, DBP, DBBP, DOP and CN has been found to substantially improve the performance of the sensors. are described. The influences of membrane compositions on the potentiometric

  • new validated potentiometric determination of

    New Validated Potentiometric Determination of

    sponse of 25 and 15 s for a period of 28 and 35 days for electrode I and II respectively, without significant change in the electrode(s) parameters. 4.4. Effect of Plasticizer In this study, three plasticizers, di-butylphthalate (DBP), di-octylphthalate (DOP) ando-nitrophenyl octyl ether (o-NPOE) were used to examine the optimization of the

  • determination of nitrite in meat products using a

    Determination of Nitrite in Meat Products using a

    For the electrodes having the optimum composition of the membrane, we have studied the influence of different plasticizers on potentiometric answer. Three electrodes with o-NPOE, DOP and TCP as plasticizers were comparatively studied. The obtained results are given in table 1 and plotted in figure 3.