Identification Trace Elements of Water and Aquatic Plant in Lake Ledulu by Neutron Activation Analysis Media Fitri Isma Nugraha1*, Saeful Yusuf2, Luki Subehi2, Atriyon Julzarika2, Kayat2, Th Rina Mulyaningsih2, Yustiawati2, Imroatushshoolikhah2, Hanhan A Sofiyuddin3
1. Indonesian Research Center for Ornamental Fish - Ministry Marine and Fisheries. Jl Perikanan No 13 pancoran Mas Depok West Java Indonesia
2. National Innovation Research Agency. Gedung B.J. Habibie Jalan M.H. Thamrin Nomor 8, Jakarta Pusat 10340
3. Experimental Station for Irrigation, Research Center for Water Resources, Ministry of Public Work, Bekasi West-Java
Abstract
Abstract:
Ledulu Lake is one of the lakes in the Rote Ndao Region. Lake Ledulu was formed in the Quaternary period with Cenozoic constituents and Neogene deposits based on geological formations. The formations formed in the Ledulu Lake area are Sediment, Chemical, Limestone. The purpose of this study was to measure the metal content in lake water and absorbed by aquatic vegetation in the Ledulu lake ecosystem, using Neutron Activation Analysis Technology (AAN). AAN is one of the modern methods that is able to measure the level of heavy metal uptake in aquatic biota (water animals and aquatic plants). Result of metal content in ledulu lake water (mg/L) I.e: Bromine 405.06, Calcium 7,195.66, Cerium 9.10, Cobalt 2.43, Chromium 45.90, Lanthanum 12.07, Magnesium 1189.93, Sodium 24,382.31. Aquatic plants that absorb heavy metals in lake ledulu i.e panicum sp, Ludwigia Adscendens (L.) H.Hara, Ottelia alismoides (L) pers, Najas sp, Ipomea aquatica Forssk, Pontederia korsakowii (Regel & Maack) M.Pell. & C.N.Horn, callitriche sp, Pontederia cf.korsakowii (Regel & Maack), Bacopa monnierii, Nymphaea alba L. Sodium is not absorbed by Panicum sp, Ludwigia adsendence (L) nutrient, and Nymphaea Alba. Lanthanum only absorbed by Panicum sp and Callitriche sp. All other elements can be absorbed by aquatic plants in the Ledulu lake ecosystem with different absorption concentrations.
Keywords: AAN, lake Ledulu, water, aquatic plant, trace element
Topic: Aquatic Pollution and Ecotoxicology (International)
