CD Skripsi
Analisa Kontaminasi Logam Berat Pada Tanah Menggunakan Pengukuran Suseptibilitas Magnetik Berbasis Rangkaian Integrator Rl
The increase in soil pollutant concentration induced by human activities has been increasingly concerning. Soil pollution measurement technology is required for soil management system to detect the heavy metal contamination. In this study, heavy metal contamination in the soil were estimated by combining chemical analysis and magnetic data. The soil samples were collected from five different locations, those are the factory area, residential area, watershed, the mining area in Duri City, Bengkalis Regency, and agriculture area at UPT Experimental Gardens, Riau University. The quantities of heavy metals i.e., copper (Cu), zinc (Zn), and lead (Pb), were determined using the Atomic Absorption Spectrometry method. The magnetic susceptibility value was estimated by analyzing the magnetization curve, which was measured using an RL integrator circuit at frequencies of 1, 10, and 100 Hz. The measurement results show that the greater the measurement frequency, the smaller the susceptibility value. All the soils exhibit low and positive paramagnetic susceptibility values. The Pearson correlation test were utilized to establish the standard for quantitative assessment between magnetic susceptibility values and heavy metal concentrations. All samples indicate a moderate, strong, and very strong correlation. However, the magnetic susceptibility values is not significantly correlated to heavy metal concentrations, due to the presence of iron oxide minerals in the soil. Nevertheless, the Magnetization Characterization Instrument which has been designed, performs effectively and suitable for estimating the magnetic susceptibility values.
Keywords: Soil, heavy metals, contaminants, and magnetic susceptibility.
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