| dc.contributor.advisor | Saprudin, Deden | |
| dc.contributor.advisor | Khotib, Mohammad | |
| dc.contributor.author | yusifa, sekar rahadifa citra | |
| dc.date.accessioned | 2026-08-14T04:05:28Z | |
| dc.date.available | 2026-08-14T04:05:28Z | |
| dc.date.issued | 2026 | |
| dc.identifier.uri | http://repository.ipb.ac.id/handle/123456789/178604 | |
| dc.description.abstract | Ion timbal(II) merupakan logam berat toksik yang memerlukan metode analisis yang sensitif, cepat, dan ekonomis. Penelitian ini bertujuan mengkarakterisasi Elektrode pasta karbon (EPK) termodifikasi magnetit (Fe3O4) untuk Pb(II) menggunakan voltametri siklik. Magnetit (Fe3O4) disintesis secara hidrotermal dan dikarakterisasi menggunakan X-Ray Diffraction (XRD). Kinerja Elektrode dievaluasi melalui karakterisasi elektrokimia, optimasi komposisi Fe3O4, pengaruh laju pindai, serta validasi metode yang meliputi linearitas, limit deteksi (LOD), limit kuantifikasi (LOQ), keterulangan, dan stabilitas. Hasil XRD mengonfirmasi terbentuknya fase kristal Fe3O4 dengan ukuran kristalit 14,31 nm. EPK termodifikasi Fe3O4 dengan komposisi optimum 1 mg menunjukkan respons elektrokimia yang lebih baik dibandingkan EPK tanpa modifikasi. Kurva kalibrasi menunjukkan hubungan linier (R² = 0,9799), dengan LOD 0,9890 mM dan LOQ 2,997 mM. EPK termodifikasi Fe3O4 berpotensi sebagai sensor elektrokimia sederhana, sensitif, dan berbiaya rendah untuk analisis Pb(II). | |
| dc.description.abstract | Lead(II) ion is a toxic heavy metal that requires a sensitive, rapid, and costeffective analytical method. This study aimed to characterize a magnetite (Fe3O4)-
modified carbon paste electrode (CPE) for Pb(II) detection using cyclic
voltammetry. Magnetite (Fe3O4) was synthesized by the hydrothermal method and
characterized using X-ray Diffraction (XRD). The electrode performance was
evaluated through electrochemical characterization, optimization of Fe3O4
composition, scan rate investigation, and method validation, including linearity,
limit of detection (LOD), limit of quantification (LOQ), repeatability, and stability.
XRD analysis confirmed the formation of crystalline Fe3O4 with a crystallite size
of 14.31 nm. The Fe3O4-modified carbon paste electrode with an optimum
composition of 1 mg exhibited better electrochemical performance than the
unmodified electrode. The calibration curve showed good linearity (R² = 0,9799),
with an LOD of 0.9890 mM and an LOQ of 2.997 mM. The Fe3O4-modified carbon
paste electrode demonstrates potential as a simple, sensitive, and low-cost
electrochemical sensor for Pb(II) analysis. | |
| dc.description.sponsorship | | |
| dc.language.iso | id | |
| dc.publisher | IPB University | id |
| dc.title | Karakterisasi Elektrode Pasta Karbon (EPK) Termodifikasi Magnetit (Fe3O4) untuk Deteksi Ion Timbal(II) Metode Voltametri Siklik | id |
| dc.title.alternative | Characterization of Carbon Paste Electrodes (CPE) Modified with Magnetite (Fe3O4) for Lead(II) Ion Detection by Cyclic Voltammetry. | |
| dc.type | Tugas Akhir | |
| dc.subject.keyword | elektrode pasta karbon | id |
| dc.subject.keyword | ion timbal (II) | id |
| dc.subject.keyword | magnetit | id |
| dc.subject.keyword | voltametri siklik | id |
| dc.subject.keyword | carbon paste electrode | id |
| dc.subject.keyword | cyclic voltammetry | id |
| dc.subject.keyword | lead(II) | id |
| dc.subject.keyword | magnetite | id |
| dc.subtype | Undergraduate Theses | |
