• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemosphere >Bias in determining aluminum concentrations: Comparison of digestion methods and implications on Al management
【24h】

Bias in determining aluminum concentrations: Comparison of digestion methods and implications on Al management

机译：确定铝浓度的偏差：消化方法的比较及其对铝管理的影响

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

Aluminum is an important aquatic contaminant due to its ubiquity, toxicity and low regulatory discharge limits. Aluminum is mobilized in mining related, acidic drainage and is commonly a regulated pollutant. However, while aquatic toxicity studies and toxicity criteria are based on dissolved aluminum(Al-d), discharge levels are, for statutory reasons, based on total recoverable aluminum (Al-t). The rationale for using total recoverable aluminum recognizes the potential for the release of exchangeable, toxic cations or dissolution of metastable metal flocs in the event the discharge enters an acidic receiving stream. The digestion methods used in determining total recoverable metals are not meant to dissolve aluminosilicate clay particles but we found that they do, resulting in positively biased total recoverable aluminum values. This study explored the interaction between total suspended solids (TSS) and total recoverable aluminum using three digestion methods to evaluate which method introduced the least bias.
机译：铝由于其普遍存在，毒性和低排放限制而成为重要的水生污染物。铝被调动用于采矿相关的酸性排水，通常是受管制的污染物。然而，尽管水生毒性研究和毒性标准是基于溶解铝（Al-d）的，但出于法定原因，排放量却基于可回收铝总量（Al-t）。使用总可回收铝的原理认识到，如果放电进入酸性接收流，则可能释放出可交换的有毒阳离子或亚稳金属絮凝物溶解。用于确定总可回收金属的消解方法并不意味着溶解铝硅酸盐粘土颗粒，但我们发现它们确实溶解了铝，从而导致总可回收铝值出现正偏差。这项研究使用三种消解方法探讨了总悬浮固体（TSS）与总可回收铝之间的相互作用，以评估哪种方法引入了最小的偏差。

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