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Journal : Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology)

KARAKTERISASI UNSUR PM 2,5 PADA PERIODE KEBAKARAN HUTAN DI PEKANBARU DENGAN TEKNIK ANALISIS AKTIVASI NEUTRON Indah Kusmartini; Natalia Adventini; Dyah Kumala Sari; Syukria Kurniawati; Diah Dwiana Lestiani; Muhayatun Santoso
Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Vol 20, No 1 (2019): Februari 2019
Publisher : BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (299.041 KB) | DOI: 10.17146/jstni.2019.1.1.4655

Abstract

Kebakaran hutan merupakan salah satu penyebab kerusakan hutan yang berdampak pada penurunan kualitas lingkungan. Untuk mengetahui dampak kualitas udara akibat kebakaran hutan, telah dilakukan karakterisasi dan evaluasi cuplikan partikulat udara yang dikumpulkan pada periode terjadinya kebakaran hutan di Pekanbaru. Karakterisasi cuplikan telah dilakukan dengan metode AAN yang memiliki beberapa kelebihan antara lain sensitivitas tinggi, multiunsur dan limit deteksi yang rendah. Validasi metode dilakukan pengujian terhadap cuplikan bahan acuan SRM NIST 1648a Urban Particulate Matter. Konsentrasi massa saat terjadi kebakaran hutan di Pekanbaru terdeteksi 5 hingga 7 kali lebih tinggi dari kondisi normal. Hasil karakterisasi cuplikan telah terkuantifikasi 15 unsur (Al, Ca, Ti, Cl, Mn, As, Br, Na, K, As, Fe, Zn, Cr, Co, Sb). Output dari kegiatan ini diharapkan dapat menggambarkan unsur utama yang menjadi indikator sumber pencemar yang selanjutnya dapat digunakan sebagai early warning dalam mengantisipasi bencana kebakaran hutan. Selain itu evaluasi unsur karsinogenik dan non-karsinogenik dapat menunjukkan resiko kesehatan masyarakat di sekitar lokasi kebakaran hutan yang secara tidak langsung dapat terpapar oleh emisi sumber partikulat udara.
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.