Sudarningsih Sudarningsih, Pratama Aditya, Bijaksana Satria, Fahruddin Fahruddin, Zanuddin Andi, Salim Abdus, Abdillah Habib, Rusnadi Muhammad, Mariyanto Mariyanto
Faculty of Mathematics and Natural Sciences, Universitas Lambung Mangkurat, Banjarmasin, 70124, Indonesia.
Research Centre for Geological Disaster, National Research and Innovation Agency (BRIN), Bandung, 40132, Indonesia.
Heliyon. 2023 May 23;9(6):e16425. doi: 10.1016/j.heliyon.2023.e16425. eCollection 2023 Jun.
Kalimantan Selatan is proud of the Martapura River's natural and cultural history. Martapura tributaries include Riam Kanan and Kiwa. The Martapura River is essential because it provides clean water and a livelihood for riverside residents. Human-caused river pollution grows with population density (also known as anthropogenic pollutants). This study characterizes surface sediment magnetic characteristics and heavy metal contents along the Riam Kanan, Riam Kiwa, and Martapura rivers. The purpose of this research is to evaluate the magnetic signal with respect to heavy metal contents found in surface sediments taken from rivers and to confirm the use of the rock magnetism method in environmental studies in the study area. Surface sediment samples were gathered and tested for magnetic, heavy metal, and mineralogical content. According to the findings, the pseudo-single domain (PSD) magnetite mineral predominates among the magnetic minerals that can be found in the surface sediments of the rivers Riam Kanan, Riam Kiwa, and Martapura. This substantially greater grain size may be due to magnetic particles produced by erosion along the river banks. The mass-specific magnetic susceptibility of surface sediments ranges from 103.11 to 1403.64 × 10 m/kg, with an average value of 355.67 × 10 m/kg due to the peatland environment. Magnetic susceptibility strongly negatively correlates with heavy contents like Cu, Zn, and Hg, according to Pearson correlation analysis. Due to this correlation, magnetic susceptibility may indicate heavy metal pollution in certain rivers. This current study demonstrates the novelty of the relationship between magnetic susceptibility and the contents of heavy metals in surface sediments from rivers in peatland and tropical environments by illustrating how the relationship affects the magnetic susceptibility of the sediments.
南加里曼丹省以马塔普拉河的自然和文化历史为荣。马塔普拉河的支流包括里亚姆卡南河和基瓦河。马塔普拉河至关重要，因为它为沿岸居民提供清洁水源和生计。人为造成的河流污染随着人口密度的增加而加剧（也称为人为污染物）。本研究对里亚姆卡南河、里亚姆基瓦河和马塔普拉河沿岸的表层沉积物磁性特征和重金属含量进行了表征。本研究的目的是评估与河流表层沉积物中发现的重金属含量相关的磁信号，并确认岩石磁性方法在研究区域环境研究中的应用。采集了表层沉积物样本，并对其磁性、重金属和矿物学含量进行了测试。研究结果表明，在里亚姆卡南河、里亚姆基瓦河和马塔普拉河表层沉积物中发现的磁性矿物中，准单畴（PSD）磁铁矿矿物占主导地位。这种明显更大的粒度可能是由于河岸侵蚀产生的磁性颗粒所致。由于泥炭地环境，表层沉积物的质量磁化率范围为103.11至1403.64×10⁻⁶m³/kg，平均值为355.67×10⁻⁶m³/kg。根据皮尔逊相关分析，磁化率与铜、锌和汞等重金属含量呈强烈负相关。由于这种相关性，磁化率可能表明某些河流存在重金属污染。本研究通过说明这种关系如何影响沉积物的磁化率，展示了泥炭地和热带环境中河流表层沉积物磁化率与重金属含量之间关系的新颖性。
