The content of heavy metals in vegetables in the hydrothermal alteration rocks Boto Wonogiri Central Java

[摘要] The research area was an area of hydrothermal alteration resulted of Tertiary volcanoes activity. Stratigraphically this region was composed of volcanic breccia, andesite lava intruded by andesite and then undergoes hydrothermal alteration. The result of the interaction between hydrothermal fluids and rocks produce some heavy metals. The elements will be contained also on the soil which was the result of its weathering and then the heavy metal elements were absorbed by the plant. The elements with certain level were very dangerous for human health. This phytoremediation process can also occur in alteration rocks of Quaternary volcanoes. Then some plants will have different capabilities in absorbing certain heavy metals. This research was conducted to know the characterization of vegetable plants that absorb heavy metals and this research using methodology are: petrography, X-ray diffraction (XRD), X-Ray Fluorences (XRF) and mercury analysis using Mercury Survey meter. This methods were done to know the rocks type, alterations type and heavy metals content. The analysis yields andesitic rock type which is hydrothermally altered to argillic. These argillic rocks become soils containing heavy metals including Mn, Fe, Co, Cu, As, Hg and Pb. With the process of phytoremediation then heavy metals can be contained in plants. The results showed that vegetable plants have the character of absorbing certain heavy metals, such as: chilli (Capsium fruteceus) absorb Hg. Kale (Ipomoea aquatica), chilli, bay (Eugenia aperculata) leaf, papaya (Carica papaya) and taro (Colocasia esculenta) leaf are absorbed Fe element. It proves that the metallic minerals as result of hydrothermal alteration process are absorbed by plants or vegetables.

[发布机构] Geological Engineering of UPN Veteran University, Indonesia^1;Agriculture of UPN Veteran University, Indonesia^2;Geological Agency Yogyakarta, Indonesia^3;PGRI University Madiun, Indonesia^4;Institute of Technology Bandung, Indonesia^5

[效力级别] 矿业工程

[关键词] Heavy metal elements;Heavy metals content;Hydrothermal alterations;Hydrothermal fluids;Mercury analysis;Metallic mineral;Phytoremediation;Quaternary volcanoes