Indasari, Intania Citra (2025) Surface Plasmon Resonance (SPR) untuk Karakterisasi Pertalite dan Pertamax. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pertalite dan Pertamax merupakan bahan bakar minyak (BBM) jenis bensin yang paling banyak digunakan di Indonesia dengan konsumsi Pertalite mencapai hampir 80% dari total konsumsi BBM jenis bensin. Deteksi dini terhadap gas hasil penguapan dari bahan bakar tersebut, terutama di area SPBU, penting untuk mencegah potensi kerugian dan risiko kebakaran. Penelitian ini bertujuan untuk menganalisis mekanisme pendeteksian Pertalite dan Pertamax menggunakan sensor surface plasmon resonance (SPR) berbasis konfigurasi Kretschmann, mengidentifikasi perbedaan puncak reflektansi yang dihasilkan, serta mengevaluasi pengaruh variasi konsentrasi gas terhadap sensitivitas dan efisiensi sensor. Sensor ini menggunakan pemantulan cahaya pada permukaan lapisan tipis emas untuk mendeteksi perubahan indeks bias akibat keberadaan gas. Pengambilan data dilakukan dengan memvariasikan waktu penguapan sebagai representasi konsentrasi gas, dan hasil pengukuran dianalisis secara visual dan deskriptif melalui kurva reflektansi. Hasil menunjukkan bahwa sensor SPR mampu mendeteksi adanya gas hasil penguapan melalui pergeseran sudut SPR yang terjadi pada kurva reflektansi. Respon sensor terhadap Pertalite dan Pertamax menunjukkan perbedaan karakteristik, baik dari bentuk kurva maupun posisi puncaknya. Selain itu, konsentrasi gas yang semakin tinggi menyebabkan pergeseran kurva yang semakin jelas, menandakan bahwa sensor cukup sensitif terhadap perubahan kecil dalam komposisi gas di sekitarnya. Kedua jenis bahan bakar menunjukkan pengaruh terhadap nilai indeks bias di sekitar sensor, yang berbeda dengan kondisi udara murni, sehingga membuktikan kemampuan SPR dalam mendeteksi kontaminan gas.
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Pertalite and Pertamax are the most widely used gasoline-type fuels in Indonesia, with Pertalite accounting for nearly 80% of total gasoline consumption. Early detection of vaporized fuel gas leakage, particularly in gas station areas, is crucial to prevent potential losses and fire hazards. This study aims to analyze the leakage detection mechanism of Pertalite and Pertamax using a surface plasmon resonance (SPR) sensor based on the Kretschmann configuration, to identify the differences in reflectance peak characteristics, and to evaluate the influence of gas concentration variations on the sensor’s sensitivity and efficiency. The SPR sensor operates by reflecting light on a thin gold layer surface to detect changes in the refractive index caused by the presence of gas. Data acquisition was carried out by varying the evaporation time as a representation of gas concentration, and the results were analyzed visually and descriptively through reflectance curves. The findings show that the SPR sensor is capable of detecting the presence of vaporized fuel gas through a shift in the resonance angle observed on the reflectance curve. The sensor's response to Pertalite and Pertamax exhibited different characteristics, both in terms of curve shape and peak position. Furthermore, increasing gas concentration led to more noticeable curve shifts, indicating the sensor's sensitivity to slight changes in the surrounding gas composition. Both fuel types influenced the refractive index around the sensor, differing from that of pure air, thus demonstrating the SPR sensor’s capability in detecting gas contaminants.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Lapisan tipis emas, Pertalite, Pertamax, Sensitivitas, Surface plasmon resonance, Pertalite, Pertamax, Surface plasmon resonance, Sensitivity, Thin gold layer |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA1573 Detectors. Sensors |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Intania Citra Indasari |
| Date Deposited: | 21 Jul 2025 06:10 |
| Last Modified: | 21 Jul 2025 06:10 |
| URI: | http://repository.its.ac.id/id/eprint/120278 |
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