• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Geochemistry: Journal of the International Association of Geochemistry and Cosmochemistry >Identification and quantification of regional brine and road salt sources in watersheds along the New York/Pennsylvania border, USA
【24h】

Identification and quantification of regional brine and road salt sources in watersheds along the New York/Pennsylvania border, USA

机译：美国纽约/宾夕法尼亚州边界沿流域的区域盐水和道路盐分源的识别和量化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The ecologically sensitive Susquehanna River Basin (SRB) is an important recharge area and drinking water source for a large population in the northeastern United States. Seasonal road salt application, the presence of regional brines at shallow depths, and produced waters associated with active and legacy conventional Upper Devonian oil and gas wells could increase total dissolved solids (TDS) in groundwater and streams. This study focused on SRB watersheds along the New York/Pennsylvania border, in order to assess current water quality and to establish baseline geochemistry for ground and surface water in a region with potential for increased development of the Marcellus Shale and other unconventional shale gas units. Geochemical composition was determined for 300 stream samples collected from ten sites in four watersheds over variable seasonal flow conditions, and for groundwater from over 500 drinking water wells in this region. Results indicate that many streams and groundwater wells in the study area have elevated TDS levels that indicate pre-existing contributions from saline sources. Dilution of these inputs with fresh water, and the lack of low-level trace element concentrations and isotopic composition in many water quality analyses, highlight the need for alternate robust and sensitive chemical signatures. Comparison with Cl/Br anion ratios and Sr-87/Sr-86 isotope ratios indicate that the (Ba + Sr)/Mg ratio can be used to discriminate between road salt and regional brine in these cases, and mixing models show that even small additions (0.1-0.01%) of these contaminants can be detected with this cation ratio. The (Ba + Sr)/Mg ratio may be even more sensitive (by an order of magnitude) to incursions of Marcellus Shale produced water, depending on the composition of Marcellus produced waters in this region. This study highlights the need for baseline sampling of freshwater reservoirs and the characterization of potential high TDS sources at a local and regional scale. (C) 2014 Elsevier Ltd. All rights reserved.
机译：对生态敏感的萨斯奎哈纳河流域（SRB）是美国东北部大量人口的重要补给区和饮用水源。季节性道路施盐，浅层区域盐水的存在以及与活跃的和传统的上泥盆纪油气井相关的采出水会增加地下水和溪流中的总溶解固体（TDS）。这项研究的重点是纽约/宾夕法尼亚州边界沿线的SRB分水岭，目的是评估当前的水质，并为可能增加Marcellus页岩和其他非常规页岩气单元开发潜力的地区的地下水和地表水建立基线地球化学。确定了从四个分水岭的十个站点采集的，变化的季节性流量条件下的300个溪流样品以及该地区500多个饮用水井中的地下水的地球化学组成。结果表明，研究区域中的许多溪流和地下水井的TDS水平均升高，表明盐源已经存在。用淡水稀释这些投入物，以及许多水质分析中缺乏低水平的痕量元素浓度和同位素组成，凸显了对交替的稳健和敏感化学特征的需求。与Cl / Br阴离子比率和Sr-87 / Sr-86同位素比率的比较表明，在这些情况下，（Ba + Sr）/ Mg比率可用于区分道路盐和区域盐水，混合模型表明，即使很小用该阳离子比率可以检测到这些污染物的添加量（0.1-0.01％）。 （Ba + Sr）/ Mg比率可能对马塞勒斯页岩采出水的入侵更为敏感（一个数量级），具体取决于该地区马塞勒斯采出水的成分。这项研究强调了对淡水水库进行基线采样的必要性，以及在地方和区域范围内表征潜在高TDS源的特征。 （C）2014 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号