Rumapar, Arini Evita (2023) Fabrikasi µPAD Multipleks Termodifikasi Ag dan Au untuk Deteksi Senyawa Neurotransmiter. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
μPAD (Microfluidic paper based analytical devices) sebagai salah satu jenis biosensor saat ini sedang dikembangkan berbagai deteksi senyawa biologis karena memiliki sifat yang
praktis dan waktu deteksi yang cepat. Namun penggunaan μPAD dalam deteksi senyawa neurotransmiter masih kurang dieksplorasi. Pada penelitian ini dikembangkan alat ukur
konsentrasi senyawa glutamat dan dopamin dengan metode kolorimetri menggunakan μPAD multipleks termodifikasi nanopartikel Ag dan Au. dan disintesis menggunakan metode reduksi kimia dengan trinatriumsitrat dihidrat sebagai reduktor.Nanopartikel Ag dan Au yang dihasilkan memiliki ukuran paling kecil bernilai 362 nm dan 68 nm berturut-turut. Kuantifikasi senyawa neurotransmiter menggunakan pengolahan citra dengan intensitas ruang warna RGB, grayscale, dan HSV. Perubahan intensitas pada setiap
ruang warna diakibatkan oleh reaksi senyawa neurotransmiter dengan reagen kolorimetri yang dibantu dengan nanopartikel Ag dan Au. Hasil intensitas warna berbanding lurus dengan kadar konsentrasi glutamat dan dopamin, dimana hasil sensitivitas dan linieritas diperoleh dari kurva kalibrasi. Nilai parameter yang diperoleh kemudian diolah menjadi nilai LOD (limit of detection) dan LOQ (limit of quantification). Performansi terbaik μPAD termodifikasi Au dengan variasi reduktor 0,0204 M untuk pengujian glutamat menghasilkan nilai sensitivitas sebesar -3,259, nilai linieritas sebesar 0,6088, dengan LOD senilai 9,750 dan LOQ senilai 28,8797 dan untuk pengujian dopamin diperoleh hasil terbaik pada penggunaan nanopartikel Ag variasi 0,0272 M reduktor dengan sensitivitas bernilai -5,050, linieritas sebesar 0,8457 dengan nilai LOD 7,151 dan LOQ senilai 21,670. Pengujian μPAD multipleks menghasilkan nilai error terkecil pada pengujian glutamat yaitu 3,808% dan dopamin sebesar 6,188%.
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μPAD (Microfluidic paper based analytical devices) is a type of biosensor that is being developed a lot these days to detect biological substances because of its practical use
and fast detection. However, the use of μPAD in neurotransmiter detection is still less explored. In this research, a concentration measurement of glutamat and dopamin is being developed with colorimetric reading method using modificated multiplexed μPAD by Ag and Au nanoparticle. and was synthesized by chemical reduction method with trisodium citrate dihydrate as the reductor. Ag and Au nanoparticles produced have the size of 362 nm and 68 nm consecutively. Neurotransmitter quantification is done by using image processing method with the color spaces of RGB, grayscale, and HSV. The change in the color intensity is due to the reaction of neurotransmitter, colorimetric reagent, and Ag and Au nanoparticle. The intensity result is proportional to the concentration of glutamate and dopamine, where the sensitivity and linearity is obtained from the calibration curve. Then the parameter is processed to obtain the value of LOD (limit of detection and LOQ (limit of quantification). The best performance of the modificated μPAD is shown using Au nanoparticle with 0,0204 M reductor for the glutamate detection with the value of sensitivity of -3,259 and linearity of 0,6088 with LOD of 9,750 and LOQ of 28,8797. Meanwhile dopamine detection, the best performance is obtained from μPAD modificated by Ag nanoparticle with 0,0272 M reductor which resulted in value of sensitivity of -5,050 and linearity of 0,8457, with LOD of 7,151 mM and LOQ of 21,670 mM. The experiment of multiplexed μPAD was found to have the smallest error value of 3,808% in glutamate detection and 6,188% in dopamine detection.
Item Type: | Thesis (Other) |
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Uncontrolled Keywords: | μPAD, Ag, Au, Glutamat, Dopamin μPAD, Ag, Au, Glutamate, Dopamine |
Subjects: | Q Science > QD Chemistry > QD501 Catalysis. Catalysts. T Technology > TA Engineering (General). Civil engineering (General) > TA1573 Detectors. Sensors |
Divisions: | Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis |
Depositing User: | Arini Evita Rumapar |
Date Deposited: | 07 Aug 2023 02:44 |
Last Modified: | 07 Aug 2023 02:44 |
URI: | http://repository.its.ac.id/id/eprint/100557 |
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