A New Fe (III)-Selective Membrane Electrode Based on Fe (II) Phthalocyanine

Özer, Tuğba; Işıldak, İbrahim

doi:10.33961/jecst.2019.00038

Cited by 5 publications

(8 citation statements)

References 34 publications

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“…To prepare membrane cocktails, the ionophore, KTChPB and DOS, DBP, DOP or NPOE plasticizers were dissolved in THF (18). The cocktail solution was let evaporate at room temperature.…”

Section: Methodsmentioning

confidence: 99%

Low-cost Pencil-Graphite Multi-electrodes for Simultaneous Detection of Iron and Copper

Özer

2022

Journal of the Turkish Chemical Society Section A: Chemistry

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Herein, two novel ion-selective electrodes are reported for simultaneous potentiometric determination of Fe 3+ and Cu 2+ ions. The liquid polymeric membrane components were optimized and the resulting pencil graphite electrodes gave Nernstian slopes of 20.7 mV/decade and 31.2 mV/decade with lower detection of limit of 1×10 -6 mol L -1 and 2×10 -6 mol L -1 , and wide pH range of 1.5-3.5 and 2.0-4.7 for Fe 3+ and Cu 2+ ions, respectively. The electrodes exhibited very fast response time (<6 s). In addition, the electrodes exhibited high selectivity for Fe 3+ and Cu 2+ ions against different cations, which were tested by matched potential method. The sensing platform using the optimized electrodes were integrated with the Internet of Things concept are suitable for simultaneous monitoring of Fe 3+ and Cu 2+ in real samples with high accuracy and precision.

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“…To prepare membrane cocktails, the ionophore, KTChPB and DOS, DBP, DOP or NPOE plasticizers were dissolved in THF (18). The cocktail solution was let evaporate at room temperature.…”

Section: Methodsmentioning

confidence: 99%

Low-cost Pencil-Graphite Multi-electrodes for Simultaneous Detection of Iron and Copper

Özer

2022

Journal of the Turkish Chemical Society Section A: Chemistry

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“…The all‐solid‐state contact micro‐sized nitrate‐selective sensor was prepared and used to determine the nitrate concentration during microalgal cultivation. For the preparation of the polymeric membrane sensor, the protocol in our previously published works was followed 38,39 . At first, 50% (w/w) graphite, 35% (w/w) epoxy and 15% (w/w) hardener were mixed with sufficient amount of THF in order to prepare the conductive material.…”

Section: Methodsmentioning

confidence: 99%

“…For the preparation of the polymeric membrane sensor, the protocol in our previously published works was followed. 38,39 At first, 50% (w/w) graphite, 35% (w/w) epoxy and 15%…”

Section: Fabrication Of the Micro-sized All Solid-state Contact Nitra...mentioning

confidence: 99%

Monitoring microalgal growth of Chlorella minutissima with a new all solid‐state contact nitrate selective sensor

Balkanli

Işıldak

İnan

et al. 2022

Biotechnology Progress

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As third generation feedstock, microalgae are microorganisms that can grow only in the optimum conditions. There are parameters including the concentration of macro and microelements in nutrient solution, pH, temperature and light intensity that have significant impact on microalgal growth. In recent years, various sensing devices have been developed for sensitive measurement of these parameters during microalgal growth. In this study, a new potentiometric nitrate selective sensor was developed to indicate the nitrate uptake of microalgae and the effect of nitrate nutrient on microalgal growth, specifically, and this sensor was successfully applied to determine nitrate concentration in medium during microalgal growth. Moreover, the effects of nitrate, carbonate and phosphate concentration in the growth medium on biomass production of Chlorella minutissima were investigated by using Box–Behnken design method, and optimum conditions were determined for the highest biomass production of microalgae. As a result of the experiments, it was seen that the highest C. minutissima production was achieved using the medium consist of 2.63 g/L NaNO3, 0.35 g/L Na2CO3 and 0.4 g/L KH2PO4. Statistically, it was observed that there was a proportional relationship between the microalgae production and investigated parameters such as carbon, nitrogen and phosphate amounts of culture mediums. The electrode showed a wide linear range between 1.0 × 10−1 and 5.0 × 10−5 M with a detection limit of the 5 × 10−6 M and the response time was found as 10 s. The results showed that developed nitrate selective sensor could be successfully applied for continuous measurement of nitrate in microalgal productions at reduced cost.

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“…Since iron is a ubiquitous metal in various biological processes and has found numerous industrial applications in steel, water pipes, paints, plastics, and the medical industry, it was not only desirable but necessary to develop a suitable method for rapid, efficient, and cost-effective iron determination. Some of the human health disorders are closely related to the imbalance of iron concentration in the human body, such as iron deficiency causes anemia, while iron accumulation can lead to the occurrence of hemochromatosis diseases [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

“…Considering different types of potentiometric sensors, ferric cations are mostly determined with membranes based on conductive polymers [ 7 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ], carbon materials electrodes [ 24 , 25 ], and to a small extent with those based on iron salts [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

Potentiometric Response of Solid-State Sensors Based on Ferric Phosphate for Iron(III) Determination

Paut

Prkić

Mitar

et al. 2021

Sensors

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A novel ion-selective electrode with membranes based on iron(III) phosphate and silver sulfide integrated into a completely new electrode body design has been developed for the determination of iron(III) cations. The best response characteristics with linear potential change were found in the iron(III) concentration range from 3.97× 10−5 to 10−2 mol L−1. The detection limit was found to be 2.41× 10−5 mol L−1 with a slope of –20.53 ± 0.63 and regression coefficient of 0.9925, while the quantification limit was 3.97× 10−5 M. The potential change per concentration decade ranged from –13.59 ± 0.54 to –20.53 ± 1.56 for Electrode Body 1 (EB1) and from –17.28 ± 1.04 to –24 ± 1.87 for Electrode Body 2 (EB2), which is presented for the first time in this work. The prepared electrode has a long lifetime and the ability to detect changes in the concentration of iron cations within 20 s. Membrane M1 showed high recoveries in the determination of iron cations in iron(III) standard solutions (98.2–101.2%) as well as in two different pharmaceuticals (98.6–106.5%). This proves that this type of sensor is applicable in the determination of ferric cations in unknown samples, and the fact that all sensor parts are completely manufactured in our laboratory proves the simplicity of the method.

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A New Fe (III)-Selective Membrane Electrode Based on Fe (II) Phthalocyanine

Cited by 5 publications

References 34 publications

Low-cost Pencil-Graphite Multi-electrodes for Simultaneous Detection of Iron and Copper

Low-cost Pencil-Graphite Multi-electrodes for Simultaneous Detection of Iron and Copper

Monitoring microalgal growth of Chlorella minutissima with a new all solid‐state contact nitrate selective sensor

Potentiometric Response of Solid-State Sensors Based on Ferric Phosphate for Iron(III) Determination

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