Mercury Contamination to Soil in Traditional Gold Mining Areas in Kulon Progo District, Yogyakarta, Indonesia
 
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1
University of Halu Oleo, Kampus Hijau Bumi Tridharma, Kota Kendari, 93232, Indonesia
2
Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo, Jl. A.R. Hakim, Surabaya 60111, Indonesia
CORRESPONDING AUTHOR
Ranno Marlany Rachman   

Environmental Infrastructure Engineering, Department of Civil Engineering, University of Halu Oleo, Kampus Hijau Bumi Tridharma, Kota Kendari, 93232, Indonesia
Publish date: 2019-06-01
 
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ABSTRACT
This study was conducted to determine mercury contamination contained in soils in Kalirejo sub district, Kulon Progo, Indonesia. This contamination occurred as a result of traditional gold mining activities that used amalgamation method of mercury. Soil samples were collected from 6 sites; one site was located in an uncontaminated location, and 5 were taken from 10 meters distance from the tailing ponds. Samples were collected from each site at 30, 60, and 90 cm depths. Mercury concentrations in each sample were measured according to the US EPA method, using Mercury analyzer type VM-3000. Mercury concentrations in uncontaminated area at 30, 60, 90 depths were 0.19 mg/kg, 0.02 mg/kg, and <0.0001 mg/kg respectively. These values did not exceed the quality standards according to Government Regulation No 101 Year 2014 concerning Hazardous Waste Management of 0.3 mg/kg. Meanwhile mercury concentrations around the tailing ponds was 0.30 to 22.51 mg/kg, which exceeded the quality standard.