PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Vol 9 (2020): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2020

IDENTIFIKASI UNSUR BORON MENGGUNAKAN TEKNIK LASER INDUCED BREAKDOWN SPECTROSCOPY (LIBS) UNTUK MENDETEKSI KANDUNGAN BORAKS PADA MAKANAN

Chandra Wijaya (Program Studi Fisika Universitas Negeri Jakarta, Indonesia)
Mangasi Alion Marpaung (Program Studi Fisika Universitas Negeri Jakarta, Indonesia)
Indra Karnadi (Maju Makmur Mandiri Research Center, Indonesia)



Article Info

Publish Date
31 Dec 2020

Abstract

Abstrak Dalam penelitian ini dikembangkan suatu metode untuk mendeteksi kandungan boraks dalam makanan dengan menggunakan teknik Laser Induced Breakdown Spectroscopy (LIBS). Dalam teknik ini boraks (Na2B4O7) yang berupa serbuk dicampur dengan bahan makanan (tepung) dengan konsentrasi boron sebanyak 1%, 3%, 5%, 7%, dan 10% dalam 10 gram sampel. Sampel yang sudah digerus sampai halus kemudian dikompaksi untuk menjadi pellet dengan diameter 10 mm dan tebalnya antara 1-2 mm. Dalam penelitian ini digunakan berkas laser dari Nd:YAG (355 nm, 8 ns) yang difokuskan pada permukaan sampel pellet sehingga timbul plasma. Spektrum emisi plasma yang terekam pada komputer kemudian dianalisis untuk melihat garis emisi boron yang menandakan kehadiran boraks pada sampel. Kata-kata kunci: Laser Induced Breakdown Spectroscopy (LIBS), spektrum emisi plasma, boron. Abstract In this study a method was developed to detect borax content in food using the Laser Induced Breakdown Spectroscopy (LIBS) technique. In this technique borax (Na2B4O7) in the form of powder is mixed with food ingredients (flour) with a boron concentration of 1%, 3%, 5%, 7%, and 10% in a 10 gram sample. Samples that have been crushed until smooth are then compacted to become pellets with a diameter of 10 mm and thickness between 1-2 mm. In this study a laser beam from Nd: YAG (355 nm, 8 ns) was focused on the surface of the pellet sample so that plasma arises. The plasma emission spectrum recorded on the computer is then analyzed to see the boron emission line that indicates the presence of borax in the sample. Keywords: Laser Induced Breakdown Spectroscopy (LIBS), spectrum of plasma emission, boron.

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Journal Info

Abbrev

prosidingsnf

Publisher

Subject

Electrical & Electronics Engineering Energy Physics Other

Description

Focus and Scope: Physics education Physics Instrumentation and Computation Material Physics Medical Physics and Biophysics Physics of Earth and Space Physics Theory, Particle, and Nuclear Environmental Physics and Renewable ...