BIOMONITORING DI SUNGAI SANGON, KULON PROGO, DIY : KANDUNGAN MERKURI PADA MAKROINVERTEBRATA BENTHIK

• Main Authors: , RAHADYAN AULIA, , Dr. rer. nat. Andhika Puspito Nugroho
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2014
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/127482/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=67737
• Institution: Universitas Gadjah Mada

Gold mining in the Sangon Area, Kokap, Kulon Progo, Yogyakarta is one of the traditional gold mining in Indonesia. Mercury waste has been suspected flowing from the pools to Sangon River. Benthic macroinvertebrates are bioindicators to determine the accumulation and distribution of heavy metals in aquatic systems because of the relationship between organisms with sediments, relative stream, feed behaviour, and the time of their lives in aquatic systems. Biomonitoring in the Sangon River using benthic macroinvertebrates could provide information about concentration of mercury in river waters and toxic potential both in aquatic organisms and humans. Sampling of benthic macroinvertebrates have been done at the 5 stasions using a Surber sampler (n = 3). In the laboratory, benthic macroinvertebrates have been identified and divided into feeding groups. Mercury concentrations in the organisms, water, and sediment were analyzed using the VM - 300 Mercury Analyzer. The results show that the highest Hg concentration was observed in the Gatherer Collector, followed by Filterrer Collector, Scrapper�Grazer, Shredder, and Predator. Bioaccumulation of mercury in the benthic macroinvertebrates in the Sangon River associated with concentrations of mercury in the river water (except Shredder and Predator) and sediment (except Filterer Collector and Predator).