...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Biodegradability and Molecular Composition of Dissolved Organic Nitrogen in Urban Stormwater Runoff and Outflow Water from a Stormwater Retention Pond
【24h】

Biodegradability and Molecular Composition of Dissolved Organic Nitrogen in Urban Stormwater Runoff and Outflow Water from a Stormwater Retention Pond

机译：雨水滞留池中城市雨水径流和流出水中溶解性有机氮的生物降解性和分子组成

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

Dissolved organic nitrogen (DON) can be a significant part of the reactive N in aquatic ecosystems and can accelerate eutrophication and harmful algal blooms. A bioassay method was coupled with Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) to determine the biodegradability and molecular composition of DON in the urban stormwater runoff and outflow water from an urban stormwater retention pond. The biodegradability of DON increased from 1096 in the stormwater runoff to 4096 in the pond outflow water and DON was less aromatic and had lower overall molecular weight in the pond outflow water than in the stormwater runoff More than 1227 N-bearing organic formulas were identified with FT-ICR-MS in the stormwater runoff and pond outflow water, which were only 13% different in runoff and outflow water. These molecular formulas represented a wide range of biomolecules such as lipids, proteins, amino sugars, lignins, and tannins in DON from runoff and pond outflow water. This work implies that the urban infrastructure (i.e., stormwater retention ponds) has the potential to influence biogeochemical processes in downstream water bodies because retention ponds are often a junction between the natural and the built environment.
机译：溶解的有机氮（DON）可能是水生生态系统中反应性N的重要组成部分，并可能加速富营养化和有害的藻华。将生物分析方法与傅里叶变换离子回旋共振质谱（FT-ICR-MS）结合使用，以确定城市雨水径流和城市雨水滞留池的流出水中DON的生物降解性和分子组成。 DON的生物可降解性从雨水径流中的1096增加到池塘流出水中的4096，并且DON的芳香性较低，池塘污水中的总分子量比雨水径流中的低。鉴定出1227个以上的含氮有机分子式雨水径流和池塘流出水中的FT-ICR-MS，径流和流出水中仅相差13％。这些分子式代表了DON中来自径流和池塘流出水的各种生物分子，例如脂质，蛋白质，氨基糖，木质素和单宁。这项工作意味着城市基础设施（即雨水保留池）有可能影响下游水体的生物地球化学过程，因为保留池通常是自然环境与建筑环境之间的结合点。

著录项

  • 来源
    《Environmental Science & Technology》 |2016年第7期|3391-3398|共8页
  • 作者

    Mary G. Lusk; Gurpal S. Toor;

  • 作者单位

    Soil and Water Quality Laboratory, Gulf Coast Research and Education Center, University of Florida, Institute of Food and Agricultural Sciences, 14625 CR 672, Wimauma, Florida 33598, United States;

    Soil and Water Quality Laboratory, Gulf Coast Research and Education Center, University of Florida, Institute of Food and Agricultural Sciences, 14625 CR 672, Wimauma, Florida 33598, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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