Development of an improved ligand mimetic calibration system for the analysis of iron(III) in seawater using the iron(III) chalcogenide glass ion selective electrode: A combined mechanistic and analytical study

Marić, Mark; Sohail, Manzar; Veder, Jean‐Pierre

doi:10.1016/j.snb.2014.09.003

Cited by 5 publications

(4 citation statements)

References 31 publications

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“…Beberapa teknik yang telah digunakan untuk menentukan kadar Fe(III) antara lain ICP-MS/MS (Ari et al, 2020), injeksi alir-kemiluminisens (Ussher et al, 2009), elektroda selektif ion (Maric et al, 2014) dan voltametri (Hermawan, 2015;Sanvito and Monticelli, 2020). Berdasarkan beberapa teknik tersebut, voltametri mempunyai keunggulan yaitu peralatan sederhana, preparasi sampel tidak rumit, limit deteksi yang sangat rendah, serta dapat digunakan untuk analisis secara simultan.…”

Section: Alchemy Jurnal Penelitian Kimiaunclassified

Teknik Differential Pulse Voltammetry Menggunakan Elektroda Pasta Karbon Termodifikasi Fe2O3 untuk Penentuan Kadar Fe(III) dalam Air Laut di Pelabuhan Benoa Bali

2021

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Pelabuhan Benoa merupakan salah satu pelabuhan di Provinsi Bali tempat berlabuhnya kapal/perahu nelayan, kapal penumpang, dan kapal untuk pariwisata. Aktivitas masyarakat di sekitar pelabuhan dapat menjadi sumber pencemar logam berat. Penelitian ini bertujuan untuk mengetahui hasil optimasi dan validasi elektroda pasta karbon tanpa modifikasi (EPK) dan EPK termodifikasi Fe2O3 (EPK Fe2O3) dengan teknik differential pulse voltammetry (DPV) untuk pengukuran Fe(III) dalam sampel air laut di Pelabuhan Benoa. Parameter yang dioptimasi yaitu laju pindai dan komposisi Fe2O3 dalam pasta karbon. Selanjutnya dilakukan validasi pengukuran, meliputi rentang konsentrasi linier, limit deteksi, limit kuantisasi, keberulangan, dan persen perolehan kembali. Hasil yang diperoleh yaitu laju pindai optimum 15 mV/s menggunakan EPK, menjadi<ins cite="mailto:Microsoft%20Office%20User" datetime="2021-02-27T20:39"> </ins>lebih cepat yaitu 20 mV/s menggunakan EPK Fe2O3. Komposisi modifier terbaik dalam pasta karbon sebesar 0,5%. Rentang konsentrasi linier pengukuran menggunakan EPK yaitu 5 ~ 100 mg/L menjadi 5 ~ 2000 mg/L pada EPK Fe2O3. Limit deteksi dan limit kuantisasi menggunakan EPK Fe2O3 masing-masing 0,5490 mg/L dan 0,5497 mg/L, lebih rendah daripada menggunakan EPK yaitu 1,0667 mg/L dan 1,0688 mg/L. Keberulangan pengukuran menghasilkan rasio Horwitz yang lebih kecil dari dua. Nilai persen perolehan kembali pengukuran larutan standar dengan matriks larutan sampel yang diambil pada tiga lokasi yang berbeda, yaitu pada Dermaga Barat 97,51±9,92% ; Dermaga Selatan 101,18±10,60%; dan Dermaga Timur 95,50±1,23%. Hasil pengukuran Fe(III) dalam sampel diperoleh 129,98±13,65 mg/L; 114,85±13,75 mg/L; dan 127,77±4,01 mg/L, masing-masing pada Dermaga Barat, Selatan, dan Timur.Differential Pulse Voltammetry Technique Using Fe2O3 Modified Carbon Paste Electrode for Determination of Fe(III) Levels in Seawater at Benoa Harbor Bali. Benoa Port is one of the ports in the Province of Bali where fishing boats, passenger ships, and ships for tourism are anchored. Activities around the port can be a source of heavy metal pollutants. This study aims to optimize and validates carbon paste electrodes without modification (EPK) and modified by Fe2O3 (EPK Fe2O3) using differential pulse voltammetry (DPV) techniques for Fe (III) measurements in seawater at Benoa Harbor. The optimized parameters were scan rate and the Fe2O3 composition in carbon paste. Meanwhile, the validation was performed, including the range of linear concentration, detection limit, quantitation limit, repeatability, and percent of the recovery. The research found that the optimum scan rate was 15 mV/s using EPK, become faster to 20 mV/s using EPK Fe2O3. The optimum modifier composition in carbon paste was 0.5%. The linear concentration range of measurement using EPK was 5 ~ 100 mg/L to 5 ~ 2000 mg/L at EPK Fe2O3. The detection limit and the quantitation limit using EPK Fe2O3 were 0.5490 mg/L and 0.5497 mg/L, respectively. Those are lower than the detection limit quantitation by EPK i.e., 1.0667 mg/L and 1.0688 mg/L, respectively. Repeated measurements produce a Horwitz ratio which is less than two. The percent of recovery value of the measurement of the standard solution with the sample solution matrix taken from the three different locations are 97.51±9.92% for the West Pier region; 101.18±10.60% for the South Pier region; and 95.50±1.23% for the East Pier region. The Fe(III) measurements to the different samples from the West Pier, South Pier, and East Pier regions were 129.98±13.65 mg/L; 114.85±13.75 mg/L; and 127.77±4.01 mg/L, respectively.

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Section: Alchemy Jurnal Penelitian Kimiaunclassified

Teknik Differential Pulse Voltammetry Menggunakan Elektroda Pasta Karbon Termodifikasi Fe2O3 untuk Penentuan Kadar Fe(III) dalam Air Laut di Pelabuhan Benoa Bali

2021

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“…Iron plays a crucial role as a bioactive trace metal in the ocean, regulating phytoplankton production and influencing carbon dioxide levels in the atmosphere. 1 Additionally, imbalances in iron concentration in the human body are linked to various health disorders; its deficiency can cause anemia, while its excessive accumulation can lead to conditions like hemochromatosis. 2 Moreover, iron is extensively used in industries such as steel manufacturing, water piping, paints, plastics, and medicine.…”

Section: Introductionmentioning

confidence: 99%

Comparison of selectivity and sensitivity of various ferric selective electrodes prepared using N-((bis(dimethyl amino)methylene)carbamothioyl)benzamide

Ghaemi,

Hajiaghababaei,

Najafpour

et al. 2024

Phys. Chem. Chem. Phys.

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“…The limited availability of Fe in soil for plants may cause the typical yellowing of young leaves that results in a reduction of photosynthetic activity and biomass production with great damage to agricultural activities. synchrotron micro X-ray uorescence, 2 spectrophotometry, 5,6 ame atomic absorption spectrometry (FAAS), 7,8 graphite furnace atomic absorption spectrometry (GFAAS), 9 photometry, 10 colorimetry, 11 high performance liquid chromatography (HPLC) 12 , inductively coupled plasma optical emission spectrometry (ICP-OES) 13 and electrochemical methods, 14,15 have been reported for the determination of iron. High levels of iron can change the odor, taste and colour of water and damage water equipment.…”

Section: Introductionmentioning

confidence: 99%

“…4 Several determination methods, e.g. synchrotron micro X-ray uorescence, 2 spectrophotometry, 5,6 ame atomic absorption spectrometry (FAAS), 7,8 graphite furnace atomic absorption spectrometry (GFAAS), 9 photometry, 10 colorimetry, 11 high performance liquid chromatography (HPLC) 12 , inductively coupled plasma optical emission spectrometry (ICP-OES) 13 and electrochemical methods, 14,15 have been reported for the determination of iron. In comparison with these methods, uorescence approaches have gained greater attention due to their simple equipment, rapid response, high sensitivity and easy operation.…”

Section: Introductionmentioning

confidence: 99%

Determination of trace amounts of iron by a simple fluorescence quenching method

2015

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A simple and sensitive spectrofluorimetric method based on the reaction of iron and tiron in acidic medium is developed for the determination of Fe(III), which gives an intense fluorescence quenching that was measured at 345 nm (excitation at 292 nm). The fluorescence quenching extent is proportional to the iron concentration in the range of 34.0-840 ng mL À1 . A detection limit of 9.4 ng mL À1 and a relative standard deviation (for 11 replicate measurements) of AE0.84% were obtained. Moreover, the factors affecting product fluorescence intensity, such as the pH, tiron concentration, reaction time and temperature, were investigated and optimized. This simple and sensitive method was successfully applied for the determination of trace amounts of iron in human hair, ferrous tablet, certified reference material and synthetic sample. Experimental Reagents and standardsA stock solution of iron (1000 mg mL À1 ) was prepared by dissolving an appropriate amount of FeNH 4 (SO 4 ) 2 $12H 2 O (Merck, Fig. 1 Fe-tiron complex structure in pH ¼ 5.5. View Article Onlinea Limit of detection. b Fluorescence quenching. c Spectrophotometry. d Certied reference material. e X-ray uorescence.This journal is

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Development of an improved ligand mimetic calibration system for the analysis of iron(III) in seawater using the iron(III) chalcogenide glass ion selective electrode: A combined mechanistic and analytical study

Cited by 5 publications

References 31 publications

Teknik Differential Pulse Voltammetry Menggunakan Elektroda Pasta Karbon Termodifikasi Fe2O3 untuk Penentuan Kadar Fe(III) dalam Air Laut di Pelabuhan Benoa Bali

Teknik Differential Pulse Voltammetry Menggunakan Elektroda Pasta Karbon Termodifikasi Fe2O3 untuk Penentuan Kadar Fe(III) dalam Air Laut di Pelabuhan Benoa Bali

Comparison of selectivity and sensitivity of various ferric selective electrodes prepared using N-((bis(dimethyl amino)methylene)carbamothioyl)benzamide

Determination of trace amounts of iron by a simple fluorescence quenching method

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