Geochemical evolution of dissolved trace elements in space and time in the Ramganga River, India.
Geochemical evolution of dissolved trace elements in space and time in the Ramganga River, India.
复制标题
DOI：
10.1007/s10661-023-11665-0
复制
发表时间：
2023-09-05
影响因子：
3
通讯作者：
中科院分区：
文献类型：
--
作者：
了解河流水化学从源到汇的时空动态对于约束流域污染物的起源、转化和“热点”至关重要。为了提供新的时空限制河流化学，溶解的微量元素浓度进行了测量，在17个目标位置横跨拉姆甘加河流域。河水样本是在三个季节收集的：2019年至2021年的季风前，季风和季风后。为了消除排放的微量元素浓度的依赖性，我们使用摩尔比，因为印度跨界河流的排放数据尚未公开。该数据集揭示了显着的时空变化溶解微量元素浓度的拉姆甘加河。在北方邦西部的一个主要工业城市Moradabad上游采集的样品，其特征是除Sc、V、Cr、Rb和Pb外的大多数微量元素的平均浓度高出约1.2-2.5倍，这可能是由于上游强烈的水-岩相互作用。在大城市和工业中心的下游地点也观察到这种微量金属浓度的富集。然而，这样的浓缩不足以给恒河的化学成分带来重大变化，因为信号在拉姆甘加-恒河汇合处的下游被稀释了。Ramganga河的平均河水成分与世界范围内的河水成分相当，尽管有几个地点的特点是溶解的微量元素浓度非常高。最后，我们提供了一个展望，要求稳定的非传统同位素，非常适合跟踪的起源和转变的元素，如锂，镁，钙，钛，V，铬，铁，镍，铜，锌，锶，银，镉，锡，铂，汞在印度河流的评估。在线版本包含补充材料，可通过10.1007/s10661-023-11665-0获得。
Understanding the spatiotemporal dynamics of river water chemistry from its source to sinks is critical for constraining the origin, transformation, and “hotspots” of contaminants in a river basin. To provide new spatiotemporal constraints on river chemistry, dissolved trace element concentrations were measured at 17 targeted locations across the Ramganga River catchment. River water samples were collected across three seasons: pre-monsoon, monsoon, and post-monsoon between 2019 and 2021. To remove the dependency of trace element concentrations on discharge, we used molar ratios, as discharge data on Indian transboundary rivers are not publicly available. The dataset reveals significant spatiotemporal variability in dissolved trace element concentrations of the Ramganga River. Samples collected upstream of Moradabad, a major industrial city in western Uttar Pradesh, are characterized by ~ 1.2–2.5 times higher average concentrations of most of the trace elements except Sc, V, Cr, Rb, and Pb, likely due to intense water–rock interactions in the headwaters. Such kind of enrichment in trace metal concentrations was also observed at sites downstream of large cities and industrial centers. However, such enrichment was not enough to bring a major change in the River Ganga chemistry, as the signals got diluted downstream of the Ramganga-Ganga confluence. The average river water composition of the Ramganga River was comparable to worldwide river water composition, albeit a few sites were characterized by very high concentrations of dissolved trace elements. Finally, we provide an outlook that calls for an assessment of stable non-traditional isotopes that are ideally suited to track the origin and transformation of elements such as Li, Mg, Ca, Ti, V, Cr, Fe, Ni, Cu, Zn, Sr, Ag, Cd, Sn, Pt, and Hg in Indian rivers. The online version contains supplementary material available at 10.1007/s10661-023-11665-0.
登录
查看更多内容
影响因子：
3.2
作者：
Godsey, Sarah E.;Kirchner, James W.;Clow, David W.
通讯作者：
Clow, David W.
影响因子：
11.1
作者：
Gurjar, Suresh Kr;Tare, Vinod
通讯作者：
Tare, Vinod
影响因子：
6.9
作者：
Cagnazzi, Daniele;Broadhurst, Matt K.;Reichelt-Brushett, Amanda
通讯作者：
Reichelt-Brushett, Amanda
影响因子：
7.4
作者：
GUPTA, RP;JOSHI, BC
通讯作者：
JOSHI, BC
影响因子：
2.8
作者：
Ali Khan, Mohd Yawar;Gani, Khalid Muzamil;Chakrapani, Govind Joseph
通讯作者：
Chakrapani, Govind Joseph