The Dzhidinsky orefield is located in the Zakamensky district of Buryatia. It is characterized by a high concentration of mineralization in a small area. The ores of the Dzhidinsky economic deposits are complex. This ore field includes Pervomaiskoye Mo, Kholtosonskoe W, and Inkurskoe W deposits. The catchment basin of the river Modonkul is located in the Dzhidinsky orefield. Mineral resource industry waste is a real threat to the city Zakamensk. Currently, the waste of deposits is located at the floodplain terrace and the watershed of the river Modonkul. In this work, the impact of the drainage mine and tributary Inkur on the formation chemical composition of the river Modonkul is studied. The 80 samples of water and suspended matter were taken from a surface of 0–0.5 m on seven sites. Physical and chemical parameters were measured at the sampling sites, and chemical composition was analyzed in the laboratory. In the natural background of the river, the major cations are, in decreasing order, Ca2+ > Mg2+ > Na+ + K+, and major anions are, also in decreasing order, HCO3− > SO42− > Cl−. Along the river, the chemical type of water changes from bicarbonate to sulfate across the sulfate-bicarbonate or bicarbonate-sulfate class and from calcium-magnesium across sodium-calcium-magnesium reverse calcium-magnesium group. Total dissolved solids (TDS) increase by a factor of 4.0–4.7 between the upper and mouth of the river. The dissolved and suspended loads were studied in the mixing zone of acid mine and river water. The different hydrochemistry characteristics may result from Fe, Al, and Mn hydroxide precipitation. The pH values and dissolved oxygen cycles could change the uptake of heavy metals on suspended iron and manganese oxides, and the mechanism of removing it in water. River particulates have the potential of regulating heavy metal inputs to aquatic systems from pollution. The ore elements or the heavy metals are removed from the water in two ways: by the runoff of Modonkul and the sedimentation of suspended material at the bottom. The inflow of mine water into the Modonkul river leads to the rare earth elements (REEs) composition with negative cerium and positive europium anomalies.

中文翻译：

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采矿活动和 R. Modonkul, Transbaikalia 的化学成分

Dzhidinsky 矿田位于布里亚特的 Zakamensky 区。它的特点是在小区域内高浓度的矿化。Dzhidinsky 经济矿床的矿石很复杂。该矿田包括 Pervomaiskoye Mo、Kholtosonskoe W 和 Inkurskoe W 矿床。Modonkul 河的集水盆地位于 Dzhidinsky 矿区。矿产资源工业废料是扎卡缅斯克市的真正威胁。目前，沉积废物位于洪泛区阶地和 Modonkul 河的分水岭。在这项工作中，研究了排水矿和支流 Inkur 对 Modonkul 河地层化学成分的影响。80 个水样和悬浮物样品取自 7 个地点 0-0.5 m 的表面。在采样点测量理化参数，在实验室分析化学成分。在河流的自然背景中，主要阳离子按降序排列为 Ca2+ > Mg2+ > Na+ + K+，主要阴离子按降序排列为 HCO3− > SO42− > Cl−。沿着河流，水的化学类型从碳酸氢盐转变为硫酸盐，穿过硫酸盐-碳酸氢盐或碳酸氢盐-硫酸盐类，从钙-镁穿过钠-钙-镁反向钙-镁基团。河上游和河口之间的总溶解固体 (TDS) 增加了 4.0-4.7 倍。研究了酸性矿井与河水混合区的溶解载荷和悬浮载荷。不同的水化学特性可能是由 Fe、Al 和 Mn 氢氧化物沉淀引起的。pH值和溶解氧循环可以改变悬浮铁和锰氧化物对重金属的吸收，以及在水中去除重金属的机制。河流颗粒物具有调节重金属从污染进入水生系统的潜力。矿石元素或重金属通过两种方式从水中去除：通过 Modonkul 的径流和底部悬浮物质的沉淀。矿井水流入 Modonkul 河导致稀土元素 (REE) 组成具有负铈和正铕异常。矿石元素或重金属通过两种方式从水中去除：通过 Modonkul 的径流和底部悬浮物质的沉淀。矿井水流入 Modonkul 河导致稀土元素 (REE) 组成具有负铈和正铕异常。矿石元素或重金属通过两种方式从水中去除：通过 Modonkul 的径流和底部悬浮物质的沉淀。矿井水流入 Modonkul 河导致稀土元素 (REE) 组成具有负铈和正铕异常。