Magnetic Susceptibility and Heavy Metals in Guano from South Sulawesi Caves

2nd International Conference on Mathematics, Science, Education and Technology

数学;自然科学;教育

Rifai, H.^1 ; Putra, R.^1 ; Fadila, M.R.^1 ; Erni, E.^2 ; Wurster, C.M.^3

Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Indonesia^1

Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Sriwijaya, Indonesia^2

School of Earth and Environmental Science, Centre for Tropical Environmental Science and Sustainability, James Cook University, Australia^3

关键词: Anthropogenic pollution;    Element compositions;    Frequency dependence;    Magnetic character;    Magnetic methods;    Magnetic minerals;    Magnetic parameters;    Vertical profile;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/335/1/012001/pdf
DOI  :  10.1088/1757-899X/335/1/012001

来源: IOP

【 摘 要 】

Measurement of some magnetic properties have been performed on vertical profile from South Sulawesi caves (Mampu and Bubau) by using low cost, rapid, sensitive and non destructive magnetic method. The aim is to attempt to use magnetic characters as a fingerprint for anthropogenic pollution in the caves. Guano samples were collected every 5 cm at a certain section of Mampu and Bubau cave, South Sulawesi, starting from surface through 300 cm in depth of mampu Cave and 30 cm of Bubau Cave. The magnetic parameters such as magnetic susceptibility and percentage frequency dependence susceptibility were measured using the Bartington MS2-MS2B instruments and supported by X-Ray Fluoroscence (XRF) to know their element composition. The results show that the samples had variations in magnetic susceptibility from 3.5 to 242.6 x 10-8m3/kg for Mampu Cave and from 8.6 to 106.5 x 10-8m3/kg for Bubau Cave and also magnetic domain. Then, the XRF results show that the caves contain several heavy metals. Magnetic and heavy metal analyses showing that the magnetic minerals in caves are lithogenic (Fe-bearing minerals) in origin and anthropogenic (Zn content) in the caves.