Analisis Unsur Logam Merkuri (Hg) dan Timbal (Pb) yang Terdapat pada Air dan Sedimen Sungai Sekitar Pertambangan Emas di Sumatera Utara (Batang Toru)

Abstract

Research has been carried out on the analysis of Mercury (Hg) and Lead (Pb) metals in rivers around gold mining in North Sumatra (Batang Toru). The purpose of this study was to analyze the heavy metal content of Mercury (Hg) and Lead (Pb) in water and sediment in rivers around gold mining in North Sumatra (Batang Toru). Water and sediment samples were taken from twelve stations around the gold mining river in North Sumatra (Batang toru). Determination of analysis of Mercury and Lead Metals in water and sediments were carried out using Atomic Absorption Spectroscopy (AAS). Pollution status was determined by the level of Hg and Pb in water and sediment samples. The results showed that the highest levels of mercury (Hg) in water and sediment were the highest from several stations, namely Water: 1.0482 ppb and Sediment: 1.1864 ppb. While the levels of Lead (Pb) heavy metals in water are 0.6849 ppb and in sediments are 0.9917 ppb. This study found high levels found in sediments.

Telah dilakukan penelitian tentang analisis logam Merkuri (Hg) dan Timbal (Pb) di sungai sekitar pertambangan emas di Sumatera Utara (Batang Toru). Tujuan dari penelitian ini adalah menganalisis kandungan logam berat Merkuri (Hg) dan Timbal (Pb) pada air dan sedimen di sungai sekitar pertambangan emas di Sumatera Utara (Batang Toru). Sampel air dan sedimen diambil dari dua belas stasiun di sekitar sungai pertambangan emas di Sumatera Utara (Batang toru). Penentuan analisa Logam Merkuri dan Timbal dalam air dan sedimen dilakukan dengan menggunakan Atomic Absorption Spectroscopy (AAS). Status polusi ditentukan melalui besarnya kadar Hg dan Pb dalam sampel air dan sedimen. Hasil penelitian menunjukkan bahwa perbedaan kadar Merkuri (Hg) pada air dan sedimen yang paling tinggi dari beberapa stasiun yaitu Air : 1.0482 ppb dan Sedimen : 1.1864 ppb. Sedangkan kadar logam berat Timbal (Pb) pada air 0.6849 ppb dan pada sedimen 0.9917 ppb. Penelitian ini ditemukan kadar yang tinggi terdapat pada sedimen.