Carbon Paste Electrode Hexadecyltrimethylammonium Bromide Modified Natural Zeolite for Chromium(vi) Detection

Putra, Budi Riza; Darusman, Latifah Kosim; Rohaeti, Eti

doi:10.22146/ijc.21294

Cited by 11 publications

(4 citation statements)

References 30 publications

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“…Menurut Putra et al (2013) arus puncak yang dihasilkan dari analisis menggunakan elektroda pasta karbon termodifikasi sangat dipengaruhi oleh komposisi modifier, waktu deposisi, dan parameter operasional yang lain. Pada komposisi optimum modifier akan dihasilkan sensitivitas terbaik, reprodusibilitas, dan kestabilan pengukuran.…”

Section: Pendahuluanunclassified

Zeolite-Modified Carbon Paste Electrode for Determination of Copper Using Anodic Stripping Voltammetry Method

2017

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ABSTRAKPada penelitian ini telah dilakukan pengukuran logam Cu(II) menggunakan elektroda pasta karbon (EPK) tanpa dan termodifikasi zeolit dengan metode voltametri pelucutan anodik. Parameter yang diamati yaitu kondisi optimum (waktu deposisi dan laju pindai), komposisi modifier zeolit yang ditambahkan, dan uji validitas elektroda kerja. EPK termodifikasi zeolit pada kondisi pengukuran optimum digunakan untuk menentukan konsentrasi ion logam Cu dalam sampel air limbah pembuatan gong. Hasil penelitian menunjukkan waktu deposisi optimum 410 detik dan laju pindai optimum 7,5 mV/s untuk elektroda pasta karbon tanpa modifikasi. Komposisi optimum modifier zeolit adalah 20 % dari berat grafit yang digunakan, waktu deposisi dan laju pindai yang menghasilkan arus puncak tertinggi masing-masing diperoleh pada 380 detik dan 10 mV/s. Hasil uji validasi elektroda pasta karbon termodifikasi yaitu limit deteksi pengukuran larutan standar Cu(II) adalah 46,13 ppb, lebih rendah dibandingkan dengan elektroda pasta karbon tanpa modifikasi, yaitu 99,93 ppb. Hasil pengukuran menggunakan EPK termodifikasi zeolit memiliki keberulangan (presisi) dan perolehan kembali (akurasi) yang baik. Pengukuran kadar logam Cu(II) dalam air limbah pembuatan gong yang diukur menggunakan EPK termodifikasi zeolit adalah 93,54 ± 0,87 ppb.Kata Kunci : elektroda pasta karbon, logam Cu, voltametri pelucutan anodik, zeolit. ABSTRACTIn this research, the unmodified and modified carbon paste electrode with zeolite has been prepared, for determination of Cu(II) using anodic stripping voltammetry method. The parameters observed involved deposition time, scan rates, zeolite composition in carbon paste, and validation of working electrode. The optimum performance of carbon paste electrode modified with zeolite was applied for determination of Cu(II) in wastewater of the gong fabrication. The results of this research showed the optimum of deposition time and scan rates obtained at 410 s and 7.5 mV/s for unmodified carbon paste electrode, respectively. The optimum composition of zeolite-modifier is 20 % from total graphite, with deposition time 380 s and scan rates 10 mV/s. The detection limit of the measurement

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Section: Pendahuluanunclassified

Zeolite-Modified Carbon Paste Electrode for Determination of Copper Using Anodic Stripping Voltammetry Method

2017

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“…Many researchers have made significant progress in the monitoring of Fe(II) ions through voltammetry, both in ionic and molecular compounds, particularly using electrometry systems [6][7][8]. Additionally, advancements have been made in voltammetry analysis techniques employing carbon nanotubes.…”

Section: ■ Introductionmentioning

confidence: 99%

Development of Voltammetry Analysis Method of Iron Metal Ions by Solid-State Membrane with Carbon Nanotube

Suyanta,

Sunarto,

Padmaningrum

et al. 2024

Indones. J. Chem.

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This work developed a selectively modified electrode for measuring the Fe(II) ions in continuous integration using voltammetry techniques. The study assessed various aspects, such as linearity, scan rate, repeatability, and real sample analysis. The experiment is performed using differential pulse voltammetry (DPV). The findings of the study indicated that the voltammetry method exhibited a regression line of y = 36.507 ln(x) + 990.73, with a correlation value of 0.9627, with an optimum scan rate of 20 mV/s and good repeatability over five times measurement. On the other hand, when comparing the results using the UV-Vis spectrophotometric technique, the regression equation was found to be y = 0.20438x − 0.06987, with a correlation value of 0.99583. Notably, the voltammetry measurement outperformed the UV-Vis method since it allowed analysis of Fe(II) at concentrations up to 6.35 × 10−4 ppm (or 1.00 × 10−11 M), while the UV-vis measurement could only analyze up to 1.5 ppm (or 2.36 × 10−5 M). Consequently, the developed technique proves to be superior to the other methods for the analysis of Fe(II).

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“…Zeolite as a porous material provides uniformity in terms of shape and pore selectivity, which facilitates ions in accessing its framework for sensing purposes during electroanalytical studies [24,25]. The combination of ionophore and zeolite material results in several applications that have been investigated for analytical purposes [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Potentiometric sensor for chromium(VI) using a composite of diphenylcarbazide-natural zeolite-modified membrane electrodes

Heryanto¹,

Rohaeti²,

Wulansari³

et al. 2022

ScienceAsia

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The construction and performance of ion selective electrodes (ISEs) for the determination of chromium(VI) based on PVC membranes modified with 1,5-diphenylcarbazide (DPC) and natural zeolite as ionophores are reported in this study. ISE was fabricated in an optimum composition of chromium(VI)-selective membrane consisting of 29 mol% DPC, 43.6 mol% natural zeolite, 25 mol% plasticizer, and 2.2 mol% PVC. The investigation of the performance of the proposed ISE was evaluated in terms of the Nernstian response, range of concentration, limit of detection, response time, and selectivity coefficient. The proposed ISE displayed a linear potential response over a concentration range of 10 −1 -10 −6 M K 2 Cr 2 O 7 with a Nernstian response of −28.8 mV/decade. Adequate sensitivity for chromium(VI) was offered by the proposed ISE with a limit of detection of 2.14×10 −6 M and a response time of ∼250 s. The fabricated ISE has also been investigated in selectivity studies in the presence of Cu 2+ and Fe 3+ and was found to be more selective in the concentration range of 10 −1 -10 −6 M. Therefore, a novel membrane electrode using a composite of DPC and natural zeolite as an ionophore has shown a satisfactory result for the direct potentiometric measurement of chromium(VI) in the presence of Cu 2+ and Fe 3+ , which may have the potential to be used in real sample analysis.

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Carbon Paste Electrode Hexadecyltrimethylammonium Bromide Modified Natural Zeolite for Chromium(vi) Detection

Abstract: A simple voltammetric technique for quantification of chromium(VI) is presented in this work. The technique is based on linear sweep voltammetric reduction 0,4294 mM, 3,63 x 10 -4 mM, 1,197 x 10 -3 mM, 4,49%.

Cited by 11 publications

References 30 publications

Zeolite-Modified Carbon Paste Electrode for Determination of Copper Using Anodic Stripping Voltammetry Method

Zeolite-Modified Carbon Paste Electrode for Determination of Copper Using Anodic Stripping Voltammetry Method

Development of Voltammetry Analysis Method of Iron Metal Ions by Solid-State Membrane with Carbon Nanotube

Potentiometric sensor for chromium(VI) using a composite of diphenylcarbazide-natural zeolite-modified membrane electrodes

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