Leiwakabessy, Lexye Alexander (2019) Konsentrasi Dan Faktor Transfer Radionuklida Alami 210pb Dan 40k Pada Akar Dan Batang Tanaman Padi Serta Tanah Persawahan Di Malang Raya. Sarjana thesis, Universitas Brawijaya.
Abstract
Tanaman padi (Oryza sativa L.) banyak ditanam di tanah persawahan yang mengandung unsur alam namun bersifat radioaktif atau dikenal sebagai radionuklida primordial atau naturally occurring radioactive materials (NORMs). NORMs dan pupuk kimia menjadi agen dari keberadaan logam berat dan radiasi alami yang dapat membahayakan kesehatan manusia lewat transpor rantai makanan. Penelitian ini bertujuan untuk mengetahui nilai konsentrasi radionuklida dan faktor transfer tanah persawahan ke akar-batang padi untuk memetakan distribusi radionuklida alami 210Pb dan 40K. Pengukuran konsentrasi aktivitas dilakukan dengan alat Spektrometer Gamma HPGe, (High Purity Germanium), alat pendeteksi aktivitas radiasi gamma radionuklida yang terkandung dalam sampel. Nilai faktor transfer ditentukan dari rasio konsentrasi radionuklida alam tertentu yang terakumulasi pada organ tanaman padi terhadap tanah persawahan. Hasil yang diperoleh untuk konsentrasi aktivitas radionuklida 210Pb secara berurutan: 0,36 Bq/kg (tanah persawahan), 7,56 Bq/kg (akar padi), 101 Bq/kg (batang padi); dan radionuklida 40K: 99-122 Bq/kg (tanah persawahan), 298-1286 Bq/kg (akar padi), 560-2452 Bq/kg (batang padi). Nilai faktor transfer 40K secara runtut tanah menuju akar padi dan tanah menuju batang padi dari lokasi Singosari, Malang Kota, Karangploso, Kepanjen dan Pujon: 3,01 dan 7,84; 3,25 dan 16,49; 4,11 dan 4,60; 4,27 dan 16,42; serta 10,81 dan 20,60. Nilai faktor transfer 210Pb tidak ada untuk 4 lokasi, sedangkan untuk tanah menuju akar padi lokasi Karangploso: 21,07.
English Abstract
Rice plants (Oryza sativa L.) are widely grown in rice fields that contain natural elements but are radioactive, commonly known as primordial radionuclides or naturally occurring radioactive material (NORM). These NORMs and chemical fertilizers are agents of the presence of heavy metals and natural radiations that can endanger human health through their mobility in the food chain. The main objective of this study is to determine radionuclide activity concentrations and transfer factors from paddy soil to rice crops (roots and stems) of natural radionuclides 210Pb and 40K. Radionuclides activity concentration was measured using Gamma spectrometer HPGe (high purity germanium), a type of gamma radiation activity detector. Transfer factor is determined from the ratio between activity concentrations of certain natural radionuclides that accumulate in rice crop organs with what in the soil. The results for a 210Pb activity measurements, respectively: 0,36 Bq/kg (soil), 7,56 Bq/kg (roots), 101 Bq / kg (stems); and 40K: 99-122 Bq/kg (soil), 298-1286 Bq/kg (roots), 560-2452 Bq/kg (stems). The transfer factor for 40K mentioned in order for soil to roots and soil to stems from each located in Singosari, Malang City, Karangploso, Kepanjen and Pujon: 3,01 and 7,84; 3,25 and 16,49; 4,11 and 4,60; 4,27 and 16,42; and 10,81 and 20,60. There was no transfer factor to be determine of 210Pb for 4 locations, only for soil to roots located in Karangploso: 21.07.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2019/293/051910964 |
| Uncontrolled Keywords: | Tanaman padi, NORMs, Spektrometer gamma, Konsentrasi aktivitas, 40K, 210Pb, Faktor Transfer, Paddy Rice, NORMs, Gamma Spectrometer, Activity concentration, 40K, 210Pb, Transfer Factors |
| Subjects: | 500 Natural sciences and mathematics > 575 Specific parts of and physiological systems in plants > 575.4 Stems |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Fisika |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 10 Aug 2020 07:59 |
| Last Modified: | 10 Aug 2020 07:59 |
| URI: | http://repository.ub.ac.id/id/eprint/179660 |
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