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All Journal Omni-Akuatika Walisongo Journal of Chemistry
Heny Suseno
Badan Tenaga Nuklir Nasional
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science

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Present Status of Marine Radioecology in Bali and Lombok Waters: Distribution Study of 137Cs and Natural Radionuclides in Lombok Strait Deddy Irawan Permana Putra; Heny Suseno
Journal Omni-Akuatika Vol 13, No 2 (2017): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (860.558 KB) | DOI: 10.20884/1.oa.2017.13.2.251

Abstract

Abstract Lombok strait is outflow of water masses from the Pacific Ocean to the Indian Ocean by Indonesian Throughflow (ITF). Radioecology studies in these waters were including monitoring of natural and artificial radionuclide. This study aims to obtain baseline data of artificial radionuclide 137Cs that entering from the Pacific Ocean through the Makassar Strait. The sampling location were covered territorial waters of Bali and Lombok. A large volume sample preparation for the 137Cs analysis were performed by co-precipitation process using K4Fe(CN)6 and CuCl2 at pH 8-9. Measurement of the concentration activity of natural radionuclides and 137Cs were using Gamma HPGe spectrometer with 20 – 25 % efficiency. The result of this study indicate the average concentration of 40K 226Ra 212Pb 214Bi 228Ac 214Pb and 137Cs in the sediments of Strait Bali waters respectively 165.16 Bq kg-1, 25.11 Bq kg-1, 8.36 Bq kg-1, 7.51 Bq kg-1, 7.05 Bq kg-1, 6.68 Bq kg-1 and the lowest of 0.15 Bq kg-1. In the waters of Lombok concentration activity of radionuclides 40K 226Ra 212Pb 214Bi 228Ac 214Pb and 137Cs in the sediments was 172.00 Bq kg-1, 25.88 Bq kg-1, 10.10 Bq kg-1, 6.50 Bq kg-1, 6.39 Bq kg-1, 5.70 Bq kg-1 and 0,162 Bq kg-1. The concentration activity of 137Cs in seawater of Bali and Lombok respectively was 0.113 Bq m-3 and 0.644 Bq m-3. Keyword : Natural Radionuclide, 137Cs, Lombok Strait
Study of Cadmium Bioaccumulation in Perna viridis through Food Pathway and Its Decontamination Octavin Exaudina; Wahyu Retno Prihatiningsih; Heny Suseno; Budiawan Budiawan
Walisongo Journal of Chemistry Vol 4, No 1 (2021): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v4i1.7559

Abstract

Seafood can be contaminated by heavy metals that contained in seawater and the source of food that marine biotas eats. Cadmium is one of the contaminants found in the marine environment. Bioaccumulation studies via foood pathway were complement previous studies through the seawater pathway. This study also made an effort to biologically decontaminate cadmium using acetic acid and citric acid. The experimental results showed the total bioaccumulation ability of Cd by Perna viridis was 74.01. Cd decontamination which accumulates in the Perna viridis decreases the level up to 21% 
Co-Authors Budiawan Budiawan Deddy Irawan Permana Putra Octavin Exaudina Wahyu Retno Prihatiningsih