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Program Studi Biologi Fakultas Sains dan Teknologi UIN Syarif Hidayatullah Jakarta

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ANALISIS DEPOSISI RADIONUKLIDA PEMANCAR ALFA PADA SALURAN PERNAFASAN MELALUI PROSES INHALASI DALAM KONDISI SISTEM TATA UDARA YANG BERBEDA DI INSTALASI RADIOMETALURGI

Urania Jurnal Ilmiah Daur Bahan Bakar Nuklir Vol 15, No 2 (2009): April 2009
Publisher : Urania Jurnal Ilmiah Daur Bahan Bakar Nuklir

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Abstract

ABSTRAK ANALISIS DEPOSISI RADIONUKLIDA PEMANCAR ALFA PADA SALURAN PERNAFASAN MELALUI PROSES INHALASI DALAM KONDISI SISTEM TATA UDARA YANG BERBEDA DI INSTALASI RADIOMETALURGI. Telah dilakukan analisis deposisi radionuklida gros alfa dalam saluran perrnafasan pekerja melalui proses inhalasi. Analisis ini bertujuan untuk melihat seberapa besar konsentrasi radionuklida gros alfa yang terhirup oleh pekerja dibandingkan dengan batasan yang direkomendasikan oleh IAEA. Metode yang digunakan adalah menggunakan pendekatan model biokinetika sistem pernafasan manusia sesuai ICRP Publikasi 66/1994 yang diekstrapolasi dari pengukuran konsentrasi radioaktifitas radionuklida pemancar alfa di udara. Pengukuran radionuklida pemancar alfa di udara dilakukan di operating area dan service area Instalasi Radiometalurgi (IRM). Hasil perhitungan menunjukkan bahwa aktifitas radionuklida pemancar a di paru-paru untuk orang yang bekerja selama 4 jam per hari di operating area berturut-turut sebesar 1.232 Bq, 3.988 Bq dan 38.917 Bq per hari dalam kondisi VAC normal, VAC Off 8 jam dan VAC Off 51 jam. Sedangkan untuk service area, aktifitas radionuklida pemancar a di paru-paru berturut-turut menunjukkan 1.577 Bq, 3.756 Bq dan 36.561 Bq per hari. Aktifitas radionuklida pemancar a di paru-paru dalam kondisi VAC Off 51 jam harus menjadi perhatian khusus karena aktifitas yang masih terdeposit selama 16 jam setelah mengalami proses clearance oleh jaringan paru-paru masih di atas batasan turunan yang diijinkan.   Kata kunci: Aerosol, diameter partikel, radiasi interna, proses inhalasi dan  model biokinetika.   ABSTRACT ANALYSIS OF ALFA EMITTED RADIONUCLIDE DEPOSITION AT RESPIRATORY TRACT VIA INHALATION PROCESS UNDER DIFFERENCE AIR-VENTILATION SYSTEM AT RADIOMETALLURGY INTALLATION. Analysis of alfa gross radionuclide deposition in RMI worker respiratory tract has been done. The objective is proposed to examine widely level of alfa gross radionuclide inhaled if compared it to the IAEA recommendation. Analysis method used biokinetic modeling for human respiratory tract according ICRP Publication No. 66/ 1994. This calculation was extrapolated from measurement of indoor air alfa radioactivity. Indoor air alfa gross radionuclide activity was measured at operating area and service area in Radiometallurgy Installation (RMI). The calculation results showed that a gross radionuclide activity in lung for worker during 4 hours per day in operating area was 1.232 Bq, 3.988 Bq and 38.917 Bq per day for condition of VAC normal, VAC Off 8 hours and VAC Off 51 hours respectively. Calculation of service area showed that a gross radionuclide activity in the lung was 1.577 Bq, 3.756 Bq and 36.561 Bq per day respectively for the three different VAC condition. a radionuclide activity in the lung for VAC Off 51 hours condition must be noticed because deposited activity during 16 hours after clearance process by lung tissue still higher than permissible derived limit. Keywords: Aerosol, particle size, internal radiation, inhalation process and  biokinetic model.

Kualitas Mikrobiologis Udara di Salah Satu Pusat Perbelanjaan di Jakarta Selatan

Al-Kauniyah: Jurnal Biologi Vol 8, No 2 (2015): Al-Kauniyah Jurnal Biologi
Publisher : Department of Biology, Faculty of Science and Technology

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The airborne bacteria and fungi in parking building, playground and food court in Blok M Square, South Jakarta, were assessed in order to investigate air quality in one of the shopping center in Jakarta. The air sample was passed through plate count agar and potato dextrose agar using a single-stage multi-orifice Sampler SKC Biostage Standard. Results showed that average microbial concen-trations were 200.17, 101.17, 55, 33 CFU bacteria per m3, and 109.54, 37.69, 27.09 CFU fungi per m3 of air volume in the parking building, the children playground and the food court, respectively. The most dominating bacteria had characteristicsresembleairborne Bacillus subtilis, while the most dominating fungi wereidentified as Cryptococcus sp., Aspergillus spp., Penicillium sp. and Candida sp. The microbial concentrations were different significantly (α=0,05) inall the three areas. In addition, there were strong relationship and significant influence between the concentrations of bacteria and fungi to temperature, humidity and light intensity in in all the three areas based on Pearson correlation analysis. For today, there is no air quality standard specifically for shopping center, so the data were compared tocommon standards for indoor air quality. The concentration of bacteria and fungi met the standard regulated by TheMinistry of Health Republic of IndonesiaNo.1405/MENKES/SK/ XI/2002 about Environmental Requirements for Office and Industrial., i.e <700 CFU/m3, and acceptable according to World Health Organization (WHO) with 500 CFU/m3 as a normal condition. In any case, it is advisable to be aware ofthe spread of airborne bacteria and fungi in shopping centersthat are potentially pathogenic.

Konsentrasi Radiasi Gas Radon – Thoron pada Erupsi Gunung Sinabung dengan detector CR – 39

JURNAL IKATAN ALUMNI FISIKA Vol 2, No 1 (2016): Jurnal Ikatan Alumni Fisika Unimed Edisi Januari - Maret 2016
Publisher : Universitas Negeri Medan

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Abstract

konsentrasi Radiasi Gas Radon – Thoron pasca Erupsi  Gunung Sinabung terhadap penduduk  Desa Sigarang-garang, Desa Sukanalu, Desa Guru Kinayan, Desa Namanteran. Penelitian ini dilakukan dengan metode pasif dengan sampel monitor Radon – Thoron buatan BATAN Jakarta dengan detector  CR-39 didalam rumah penduduk disekitar Gunung Sinabung selama 2 bulan yaitu dari bulan Oktober 2014 – Desember 2014. Pada saat itu Gunung Sinabung terus – menerus meletus dan mengeluarkan abu dan awan panas yang sangat tebal ke desa-desa disekitarnya.  Sampel Monitor Radon – Thoron ini dietsa di Laboratorium Pusat Teknologi Keselamatan dan Meterologi Radiasi BATAN Jakarta. Dari hasil proses dan etsa dilaboratorium diperoleh bahwa gas radioaktif Radon – Thoron masih dalam batas ambang dosis  yang diperbolehkan oleh ICRP  (Komisi Proteksi Radiasi Internasional) yaitu 1mSv/tahun kepada publik. Batas maksimun untuk Radon  adalah 200 Bq/m3 dan untuk Thoron adalah 600  Bq/m3.