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PENGARUH PENCUCIAN LARUTAN NaOCl DAN PENAMBAHAN KOLOM KEDUA ALUMINA TERHADAP YIELD DAN LOLOSAN Mo-99 DARI GENERATOR Mo-99/Tc-99m BERBASIS PZC Gunawan, Adang Hardi; Mutalib, Abdul; Lubis, Hotman; Awaludin, Rohadi; Sulaeman, .
Jurnal Radioisotop dan Radiofarmaka Vol 8 (2005): JURNAL PRR 2005
Publisher : Jurnal Radioisotop dan Radiofarmaka

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Abstract

PENGARUH PENCUCIAN LARUTAN NaOCl DAN PENAMBAHAN KOLOM KEDUA ALUMINA TERHADAP YIELDDAN LOLOSAN Mo-99 DARI GENERATOR Mo-99/Tc-99m BERBASIS PZC. Alumina merupakan salah satu bahan utama dalam generator Mo-99/Tc-99m yang berfungsi sebagai zat pengadsorpsi molibdenum. Keterbatasan daya serap alumina terhadap molibdenum menyebabkan senyawa ini tidak dapat digunakan sebagai pengisi kolom untuk generator Mo-99/Tc-99m yang menggunakan Mo-99 hasil aktivasi neutron. Dengan diketemukannya senyawa baru sebagai zat pengadsorpsi molibdenum yaitu PZC (poly zirconium compound), telah memberikan harapan baru untuk dapat dilakukannya pembuatan generator Mo-99/Tc-99m. Penelitian pembuatan generator Mo-99/Tc-99m dengan menggunakan senyawa PZC sebagai adsorbent merupakan bentuk kerjasama antara PRR-BATAN Serpong dengan JAERI dan Kaken Co. Jepang. Dalam penelitian ini telah dilakukan percobaan pembuatan generator Mo-99/Tc-99m dengan melihat pengaruh penambahan pencucian menggunakan larutan NaOCl terhadap Yield dan lolosan Mo-99(Mo-99 breakthrough) dalam larutan Tc-99m hasil elusi . Parameter lainnya yang digunakan untuk mengurangi lolosan Mo-99 dalam Tc-99m hasil elusi adalah penambahan kolom alumina yang ditempatkan setelah kolom Mo-99 PZC.Hasil penentuan kapasitas serap senyawa PZC terhadap molibdenum diperoleh dengan melihat aktivitas Mo-99 setelah pemanasan 3 jam campuran PZC dan molibdenum dan diperoleh hasil setiap gram PZC mampu menyerap 80-95 % mg dari 268 mg molibdenum yang direaksikan. Hasil penentuan yield elusi generator Mo-99/Tc-99m dengan larutan pencuci salin diperoleh < 50 % dan Yield meningkat menjadi > 80 % setelah pencucian dilakukan dengan menggunakan larutan NaOCl 0,5 % atau 1 % . Penggunaan larutan pencuci NaOCl 0,5 % dan penggunaan kolom alumina sebagai kolom kedua mampu menjaga kestabilan Yield hasil elusi dan meminimalkan lolosan Mo-99 pada Tc-99m hasil elusi. Kata kunci: alumina, generator PZC, Mo-99,Tc-99m, NaOCl Alumina is one of main material in Mo-99/Tc-99m generator as molybdenum adsorbent. Limitation of alumina adsorption capacity to molybdenum cause this material cannot be applied as column filler for generator Mo-99/Tc-99m using Mo-99 from neutron activation . The invention of new compound as molybdenum adsorbent , PZC ( poly zirconium compound), have shown that the materials is a promising adsorbent for generator Mo-99/Tc-99m from (n,γ) irradiated molybdenum. The research of generator Mo-99/Tc-99m by using adsorbent PZC is form of cooperation between PRR-BATAN Serpong with JAERI and Kaken Co. Japan. In this research, the effects of addition of NaOCl solution to elution yield and Mo-99 breakthrough have been done. The other parameter used in this experiment to minimize Mo-99 breakthrough in Tc-99m is addition of second column alumina placed after Mo-99 PZC column. Adsorption capacity of PZC material to molybdenum determined by heating Mo-99 solution with PZC up to 3 hours and the result indicated 1 gram PZC adsorbed 80-95 % Mo-99 from the reacted 268 mg molybdenum. Yield percentage of the Mo-99/Tc-99m generator without rinsed by saline solution obtained < 50 % and the yield increased > 80 % after the column washing by using NaOCl 0,5 % or 1 % solutions. Usage of both NaOCl 0,5 % solution and alumina column as second column can give yield stability and minimize Mo-99 breakthrough at Tc-99m effluent. Key words: Alumina, PZC generator,Mo-99,Tc-99m, NaOCl
THE ASSESSMENT OF SOIL PHOSPHATE AVAILABILITY USING SORPTION CURVE ON NEWLY OPEN LOWLAND AREAS KASNO, ANTONIUS; SULAEMAN, .; DWINININGSIH, SUTISNI
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 18 (2000): Desember 2000
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n18.2000.%p

Abstract

Rice growth in the newly open lowland areas is restricted, especially nutrients availability. The purposes of the research as to study the sorption of soil P and soil P availability rice growth of the newly lowland. The field experimental is located at Dwijaya, Tugumulyo, Musi Rawas, South Sumatra province. Soil P-sorption was analysed in the laboratory for wet and dry soil samples, with two CaCI2 concentration (i.e.: 0.01 and 0.005 M). Soil fertility status of experimental site is very poor with N, P, K, Ca, Mg and organic matter as limiting factors for crop growth. Maximum rice yield in the site was achieved by P fertilizer application of 767 kg of SP-36, and correspond to available soil P (Bray 1) content of 5 ppm P. The phosphorus standard requirements in 0.01 and 0.005 M CaCI2 extracting solution are found to be 0.0051 and 0.0018 ppm P for wet soil sample and 0.009 and 0.003 ppm P for dry soil sample respectively.