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Khairuddin
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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Test of Mercury (Hg) Content in Mozambique Tilapia Fish (Oreochromis Mossambicus) from Lake Rawa Taliwang Nature Tourism Park, West Sumbawa Regency Hadiatullah; Khairuddin; Didik Santoso
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i1.4563

Abstract

Rawa Taliwang Lake Natural Tourism Park is a freshwater waters located in West Sumbawa Regency with an area of ​​819.20 ha. Rawa Taliwang Lake Natural Tourism Park is dominated by various types of fish, so that local people catch fish in this lake to meet their consumption needs and for sale. In addition, the lake's catchment area also holds mining potential, especially gold. Small-scale gold mining, mostly found in the mountains and hills around catchment area Lake Rawa Taliwang. This mining uses liquid mercury as a gold binder from the ore. Some waste that has an impact on the end of lake water so that it can affect the lake ecosystem. Therefore, research is needed to determine the amount of mercury (Hg) in tilapia mozambique fish (Oreochromis mossambicus) from Rawa Taliwang Lake Natural Tourism Park. This study uses a quantitative descriptive method. In this study, sampling was carried out by purposive sampling at 3 location points with 3 repetitions. The research sample used 9 tilapia Mozambique fish. The data obtained were analyzed using the Atomic Absorption Spectrophotometry (AAS) method. The results showed that the mercury content in tilapia mozambique fish was < 0.001 ppm. So it can be said that in the flesh of tilapia fish no heavy metal mercury (Hg) was detected.
Analysis of Mercury (Hg) Heavy Metal Content in Rice Snail (Pila ampullacea) Derived from Rawa Taliwang Lake, West Sumbawa Regency Khairuddin; M. Yamin; Kusmiyati
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.4875

Abstract

Danu Rawa Taliwang is a large body of water that receives sources of heavy metal pollution from human activities such as agriculture and mining. By using bioindicators such as fish, heavy metals have been detected in the waters. The aim of the study was to determine the content of heavy metal mercury (Hg) in the Rice Field Snail (Pila ampullacea) originating from Lake Rawa Taliwang to enrich Ecotoxicology course material. The special benefit is to protect consumers who consume fish from heavy metal contaminants.  Sample Snail was put into a plastic bag and then stored in a sample box. The research sample was then analyzed at the Environmental Laboratory Center for the West Nusa Tenggara Environment and Forestry Office. The method of data analysis was carried out by taking muscle tissue from snails and then analyzing the content of heavy metals in the form of Hg using an Atomic Absorption Spectrophotometer. Heavy metals in snail tissue were measured after adding concentrated HNO3 and HClO4, which were heated at 60-70ºC for 2-3 hours until the solution was clear. Ready samples were measured by AAS using an air-acetylene flame. The conclusion of this study is that the heavy metal content of Hg in rice field snails (Pila ampullacea) originating from Lake Rawa Taliwang to enrich Ecotoxicology course material ranges from 0.96 ppm to 1.91 ppm.
Co-Authors Didik Santoso Hadiatullah Kusmiyati Kusmiyati M. Yamin