Salam, Ijlal Abdus (2024) Formulasi Reagen dan Katalis Metalik (Ag, Au, Pt) untuk Deteksi Neurotransmiter dengan Teknik Spektrometri. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian tentang formulasi reagen dan katalis metalik (Ag, Au, Pt) untuk deteksi neurotransmiter dengan teknik spektrometri telah dilakukan. Penelitian ini bertujuan untuk mengembangkan biosensor optik jenis spektroskopi serapan dalam bentuk formulasi reagen serta katalis yang optimal untuk mengkuantifikasi dan mencirikan senyawa neurotransmiter dopamin, glutamat, dan NADH. Biosensor ini berbentuk spektrometer yang mendeteksi panjang gelombang pada rentang cahaya tampak berdasarkan rentang penciri spektral yang didapatkan melalui formulasi analit, reagen, dan katalis yang digunakan untuk deteksi. Reagen yang digunakan yaitu 2,4-Dinitrophenylhyrazine dan triiodide untuk deteksi dopamin, iron salicylate untuk deteksi glutamat, thiazolyl blue tetrazolium bromide dan resazurin untuk deteksi NADH yang dikombinasikan dengan katalis nanopartikel Ag, Au, dan Pt. Hasil penelitian menunjukkan bahwa katalis yang dikombinasikan dengan reagen mampu untuk meningkatkan sensitivitas deteksi reagen melalui peningkatan absorbansi dan tidak mengubah penciri spektral asli dari reagen. Sistem deteksi yang dikembangkan telah mampu mendeteksi reagen dan katalis yang telah diformulasi di mana didapatkan karakteristik sensor reagen yang untuk deteksi dopamin dengan koefisien determinasi R^2sebesar 0,89 , LOD 0,35 nM, dan LOQ 0,78 nM. Hasil uji deteksi glutamat dengan karakteristik sensor dengan R^2sebesar 0,85 , LOD 0,27 mM, dan LOQ 0,90 mM. Terakhir hasil uji deteksi NADH dengan karakteristik sensor R^2sebesar 0,81 , LOD 0,25 µM, dan LOQ 0,82 µM.
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The research on the formulation of reagents and metallic catalysts (Ag, Au, Pt) for detecting neurotransmitters using spectrometric techniques has been conducted. This study aims to develop an optical biosensor based on absorbance spectroscopy to quantify and characterize neurotransmitters dopamine, glutamate, and NADH. The biosensor has form of a spectrometer that detects wavelength in the visible light range based on spectral characteristics obtained through the formulation of analytes, reagents, and catalysts used for detection. The reagents that were used in this research are 2,4-Dinitrophenylhydrazine and triiodide for dopamine detection, iron salicylate for glutamate detection, thiazolyl blue tetrazolium bromide and resazurin for NADH detection combined with Ag, Au, and Pt nanoparticle catalysts. The results of this research indicated that catalysts combined with reagents can enhance detection sensitivity by increasing absorbance without altering the original spectral characteristics of the reagents. Detection system has been develoved successfully detected formulated reagents and catalysts, obtained sensor characteristics for dopamine detection with a linear R^2 of 0.89, LOD of 0.35 nM, and LOQ of 0.78 nM. Glutamate detection showed sensor characteristics about R^2of 0.85, LOD of 0.27 mM, and LOQ of 0.90 mM. Finally, NADH detection showed sensor characteristics about R^2of 0.81, LOD of 0.25 µM, and LOQ of 0.82 µM.
Item Type: | Thesis (Other) |
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Uncontrolled Keywords: | Catalyst, Formulation, Neurotransmitters, Reagents, Spectrometric, Formulasi, Katalis, Neurotransmiter, Reagen, Spektrometri |
Subjects: | Q Science > QD Chemistry > QD117 Absorption Q Science > QD Chemistry > QD117.S64 Spectrophotometry Q Science > QD Chemistry > QD251.2 Chemistry, Organic. Biochemistry Q Science > QD Chemistry > QD471 Chemical compounds - Structure and formulas Q Science > QD Chemistry > QD501 Catalysis. Catalysts. |
Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis |
Depositing User: | Ijlal Abdus Salam |
Date Deposited: | 01 Aug 2024 07:26 |
Last Modified: | 01 Aug 2024 07:26 |
URI: | http://repository.its.ac.id/id/eprint/108754 |
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