Fadlilah, Adelina Nur (2017) Analisis Struktur Mikro Pori Batu Apung Lombok. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Studi tentang apung mikro Lombok bertujuan untuk menentukan komposisi kimia dan distribusi mikro pori, tampilan mikrografi, serta porositas batu apung. Penentuan porositas didasarkan pada perangkat lunak ImageJ. Sampel yang digunakan dalam penelitian ini diambil dari kabupaten Ijo Balit Village Labuhan Haji Kabupaten Lombok Timur (sampel 1A), digali pada kedalaman 0,3 m, dan dari desa Karang Sidemen Kabupaten Utara Batu Kliang Lombok Tengah (sampel 3B), di kedalaman 3 meter. Batu apung dibentuk menjadi kubus kecil yang memiliki volum sekitar 1 cm3 untuk pengamatan SEM / EDX, dan bubuk untuk pengukuran XRD. Studi ini menyimpulkan bahwa distribusi Si ditemukan lebih umum pada permukaan dinding pori, Al berada di pori bagian dalam batu apung, dan Na di tepi dinding batas pori-pori dan juga di tengah dinding batas pori. Sementara oksigen lebih umum ditemukan bercampur dengan unsur-unsur lain untuk membentuk oksida logam. Berdasarkan tampilan mikrografi batu apung, pori batu apung mayoritas berbentuk asimetris dimana pori pori ini saling berhubungan satu sama lain. Fraksi porositas batu apung berdasarkan perhitungan analisis dari software ImageJ dengan menggunakan perbesaran analisis morfologi 1000 kali pada sampel 1A adalah 0,4509 (tanpa menggunakan fitur Find Edges) dan 0,5051 (dengan menggunakan fitur Find Edges) sedangkan pada sampel 3B adalah 0,5019 (tanpa menggunakan fitur Find Edges) dan 3457 (dengan menggunakan fitur Find Edges).
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The study on Lombok's pumice micro structure aims to determine the chemical composition and distribution of micro pores, micrographic views, and the porosity. The determination of porosity was based on ImageJ software. Samples used in this study was collected from Ijo Balit Village Labuhan Haji district East Lombok regency (samples 1A), excavated in the depth of 0. 3 m, and from Karang Sidemen village North Batu Kliang Central Lombok regency (samples 3B), in the depth of 3 meters. The pumice was shaped in the form of small cube having volum around 1 cm3 for SEM/EDX observation, and of powder for XRD measurement. The study concludes that the distribution of Siwas found more commonly at the surface of the pore walls, Al in the inner pore of pumice, and Na at the edge of the boundary wall of the pore and also in the central of the boundary wall of the pore. While oxygen was more commonly found mixed with other elements to form metal oxides. Based on micrographic views of pumice, porous pumice majority asymmetrically shaped pores which is interconnected with the other. Fractional porosity of pumice based analysis calculation from software ImageJ by using a magnification morphological analysis of 1,000 times on samples 1A is 0. 4509 (without using Find Edges tools) and 0.5051 (with using Find Edges tools) while for sample 3B is 0.5019( without using Find Edges tools) and 0,3457(with using Find Edges tools).
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Batu Apung Lombok, Struktur Mikro Pori, Distribusi Komposisi Kimia, Software ImageJ, Porositas. |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | ADELINA NUR FADLILAH |
| Date Deposited: | 11 Oct 2017 03:31 |
| Last Modified: | 08 Mar 2019 02:09 |
| URI: | http://repository.its.ac.id/id/eprint/46488 |
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