Vertical Profile of Heavy Metal Concentration in Core Sediments of Saguling Lake, West Java Indonesia

Eka Wardhani, Suprihanto Notodarmojo, Dwina Roosmini


Saguling lake was built on The Citarum River, The Citarum Watershed is home to the largest industrial area in West Java Province. Several economic activity are performed along Citarum River, including mining and agriculture. The quality of water in the Saguling Lake has been monitored since 1990 by the state agency for environmental control; there are no reports about heavy metals in sedimen of the lake. There is insufficient information for an assessment of heavy metas distribution in the lake. Originally, the Saguling was planned for a single purpose lake to generate electricity. Later, considering the environmental problems of the area, the Saguling was re- planned as a multipurpose lake such as fisheries, agri-aquaculture, and tourism. But, at present, the lake is also used for domestic purposes such as raw water, bathing and washing. Therefore, the aim of this work is to quantity Cd, Cr, Cu, Ni, Pb, and Zn levels in the core sediments of Saguling Lake section Nanjung, Batujajar, and Maroko. Metals Pollution Index were used for the environmental assessment of Saguling Lake sediment. The concentration of heavy metals in the core sediment decreased in the order of Zn>Cu>Cr>Pb>Ni>Cd. Zn was the most abundant metals in Saguling Lake sediment, with measured concentrations ranging from 87.24 to 314.49 mg/kg, follow by Cu (78.32- 112.12 mg/kg), Cr (30.86-74.96 mg/kg), Pb (15.05-40.82 mg/kg), Ni (6.50-20.08 mg/kg), and Cd (6.85-10.12 mg/kg). The section was polluted by Cd and Cu based on MPI catagory, whereas there is no pollution for Cr, Pb, Zn, and Ni. The possible source for hevy metals contamination were attributed to the increasing municipal and industrial wastewater discharges, agricultural runoff, which may be associated with an accelerating growth of economic in the Saguling Lake region in

the past decade. 

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