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All Journal Ganendra: Majalah IPTEK Nuklir Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology)
Woro Yatu Niken Syahfitri
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Biochemistry, Genetics & Molecular Biology Computer Science & IT Energy Environmental Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Other

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UJI INTERKOMPARASI METODE AAN DAN XRF UNTUK ANALISIS SAMPEL SEDIMEN IAEA INTER COMPARISON TEST OF NAA AND XRF METHOD FOR IAEA SEDIMENT SAMPLE ANALYSIS Syukria Kurniawati; Indah Kusmartini; Diah Dwiana Lestiani; Woro Yatu Niken Syahfitri
GANENDRA Majalah IPTEK Nuklir Volume 17 Nomor 1 Januari 2014
Publisher : Website

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (604.808 KB) | DOI: 10.17146/gnd.2014.17.1.1298

Abstract

Laboratorium Pusat Teknologi Nuklir Bahan dan Radiometri mengikuti kegiatan interkomparasi IAEA tahun 2011. Sampel uji yaitu sedimen dengan kode IAEA 457. Metode uji meliputi Analisis Aktivasi Neutron (AAN) dan X-Ray Fluorescence (XRF). Dilakukan perbandingan metode AAN dan XRF untuk mengevaluasi kinerja masing-masing metode dan mengetahui kesesuaian kedua metode tersebut dalam analisis unsur pada sampel interkomparasi IAEA. Evaluasi kinerja masing-masing metode dilakukan dengan uji akurasi dan perhitungan z-score sedangkan kesesuaian metode diuji dengan uji t-berpasangan. Hasil analisis sampel menggunakan AAN diidentifikasi enam unsur Al, Fe, Cr, Co, Mn dan Zn sedangkan XRF diidentifikasi delapan unsur Al, Fe, Cr, Co, Cu, Mn, Pb dan Zn. Hasil uji akurasi pada AAN, unsur Al dan Fe kurang memuaskan sedangkan pada XRF unsur Co memiliki hasil yang kurang baik. Hasil perhitungan z-score, hampir semua unsur memberikan hasil yang memuaskan kecuali Al menggunakan metode AAN. Uji t-berpasangan yang dilakukan pada hasil analisis sedimen menggunakan AAN dan XRF memberikan hasil t-hitung < t-tabel, artinya tidak ada perbedaan hasil analisis antara kedua metode. Hasil tersebut menunjukkan bahwa metode AAN dan XRF dapat saling melengkapi untuk analisis unsur pada sampel IAEA 457. Secara umum, kedua hasil analisis unsur menunjukkan kesesuaian yang baik sehingga memperkuat validitas hasil analisis sampel interkomparasi IAEA.
Analytical Capabilities of EDXRF for Determination of Rare Earth Elements Syukria Kurniawati; Muhayatun Santoso; Diah Dwiana Lestiani; Natalia Adventini; Woro Yatu Niken Syahfitri
Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Vol 22, No 1 (2021): February 2021
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jstni.2021.22.1.5815

Abstract

Rare earth elements (REE) are present in the lanthanide range and are widely used in high-tech and clean technology applications that are predicted to grow significantly in the coming decades. Therefore, there will be a high demand for REE in the future that will impact the needs for development of sensitive and selective methods for determination of REEs such as X-Ray Fluorescence (XRF). Reliability of REEs analysis results depend on analytical capability of XRF instrument’s performance. Analytical capability shows the ability of the instrument to perform sample analysis with high accuracy and precision and proven by validation so that the results obtained are reliable. The aim of this study is to assess the analytical capability of XRF for REEs analysis in samples particularly Lanthanum (La), Cerium (Ce), Neodymium (Nd), Samarium (Sm) and Yttrium (Y), by performing method validation of energy dispersive x-ray spectrometers (ED-XRF). Four measurement conditions that covered the selected elements were defined. Accuracy, precision and detection limits determination were performed by measuring the CRM In House Monazite Sand. The yield of the selected element corresponds to its certified value, with a %recovery between 95.99 to 103.1%. The %RSD values ranging from 0.59 to 5.19%. The detection limits (LLD) of ED-XRF ranged from 8.78 to 67.4 ppm. The results showed the good analytical capability of ED-XRF method for REEs analysis.
Co-Authors Diah Dwiana Lestiani Indah Kusmartini Muhayatun Santoso Natalia Adventini Syukria Kurniawati Syukria Kurniawati