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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Fisika Indonesia
Hanif Khoirudin
Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Energy Materials Science & Nanotechnology Physics

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Identifikasi Partikel Emas Pada Daun Kayu Putih dengan XRF (X-Ray Fluorescence) dan AAS (Atomic Absorption Spectroscopy) Sebagai Indikator Potensial Tambang Emas di Indonesia Dian Artha Kusumaningtyas; Hanif Khoirudin; Muamila Tami; Mila Utami Sari; Arif Nirsatmanto; Ari Dwi Nugraheni; Fahrudin Nugroho
Jurnal Penelitian Pendidikan IPA Vol 8 No 1 (2022): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i1.1092

Abstract

Eucalyptus is a plant that is able to absorb gold (Au) particles from the soil and store them in the leaves. Eucalyptus roots have the ability to penetrate the soil of the calcrete zone, which is rich in the mineral calcium (Ca). Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. and contains Au particles as impurities, making this plant a potential natural indicator (biogeochemical) of potential Au metal mining. The Au content in eucalyptus leaves can be determined by using the XRF (X-Ray Fluorescence) instrumentation material analysis method for qualitative analysis and AAS (Atomic Absorption Spectroscopy) for quantitative results. The form of XRF characterization of the intensity versus energy spectrum of certain elements from the XRF analysis results obtained is a spectrum with a peak power of 9.731 keV which indicates the presence of Au metal in the sample. The results obtained qualitatively are the Au metal content in the eucalyptus leaf sample of (9.0 ± 0.5) ppm. However, the Au metal content in each leaf sample was different. This provides information that Eucalyptus from different plants has the potential to be a biogeochemical indicator of potential Au metal mining in Indonesia
Pembuatan Sistem Pengujian Berbasis Aliran Pada Biosensor QCM-D untuk Pengembangan Aplikasi Biomedis hanif khoirudin
Jurnal Fisika Indonesia Vol 25, No 3 (2021): Vol 25, No 3 (2021)
Publisher : Department of Physics Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfi.v25i3.65537

Abstract

QCM-D (Quartz Crystal Microbalance with Dissipation Monitoring) adalah suatu piranti sensor berbasis gelombang akustik yang sangat potensial untuk aplikasi biomedis. QCM memiliki sensitivitas yang tinggi sehingga dapat mengukur massa hingga ukuran nanometer. Dalam penelitian biomedis, sampel berupa cairan sehingga dibutuhkan pengujian pada kondisi cair. Pada penelitian ini, telah dibuat sistem pengujian berbasis aliran untuk pengembangan biosensor QCM-D pada aplikasi biomedis. Sistem aliran menggunakan pompa peristaltik yang digerakkan oleh motor stepper dan dikendalikan dengan Arduino Uno. Debit optimum yang menghasilkan data paling stabil yaitu 4,1 μL/s. Dengan sistem pengujian tersebut, QCM-D menjadi biosensor yang sangat potensial pada aplikasi biomedis karena dapat mengukur tidak hanya perubahan massa, namun juga interaksi antar molekul yang terjadi pada lapisan aktif sensor yang ditunjukkan oleh perubahan energi disipasi.
Co-Authors Ari Dwi Nugraheni Arif Nirsatmanto Dian Artha Kusumaningtyas Fahrudin Nugroho Mila Utami Sari Muamila Tami