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Open AccessCommunication

Mercury in Soil and Forage Plants from Artisanal and Small-Scale Gold Mining in the Bombana Area, Indonesia

1
Sekolah Tinggi Ilmu Kesehatan Makassar, Jl. Maccini Raya No. 197, Makassar 90231, South Sulawesi, Indonesia
2
Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo-cho, Matsuyama, Ehime Prefecture 790-8577, Japan
3
Faculty of Collaborative Regional Innovation, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime Prefecture 790-8577, Japan
4
Cyclotron Research Centre, Iwate Medical University, 348-58 Tomegamori, Takizawa, Iwate 020-0173, Japan
*
Authors to whom correspondence should be addressed.
Toxics 2020, 8(1), 15; https://doi.org/10.3390/toxics8010015
Received: 24 December 2019 / Revised: 3 February 2020 / Accepted: 17 February 2020 / Published: 22 February 2020
Mercury (Hg) contamination in soil and forage plants is toxic to ecosystems, and artisanal and small-scale gold mining (ASGM) is the main source of such pollution in the Bombana area of Indonesia. Hg contamination in soil and forage plants was investigated by particle-induced X-ray emission analysis of samples collected from three savannah areas (i.e., ASGM, commercial mining, and control areas) in the Bombana area. Hg contents of forage plants in the ASGM area (mean 9.90 ± 14 µg/g) exceeded those in the control area (2.70 ± 14 µg/g). Soil Hg contents (mean 390 ± 860 µg/g) were also higher than those in the control area (mean 7.40 ± 9.90 µg/g), with levels exceeding international regulatory limits. The Hg contents of 69% of soil and 78% of forage-plant samples exceeded critical toxicological limits. Thus, the Hg levels observed in this study indicate that contamination extending over large areas may cause major environmental problems. View Full-Text
Keywords: mercury pollution; soil; forage plants; ASGM mercury pollution; soil; forage plants; ASGM
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MDPI and ACS Style

Basri; Sakakibara, M.; Sera, K. Mercury in Soil and Forage Plants from Artisanal and Small-Scale Gold Mining in the Bombana Area, Indonesia. Toxics 2020, 8, 15.

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