...
首页> 外文期刊>Environmental Science & Technology >Spectrpscopic Evidence for the Rate-Limited Accumulation of a Persistent Fraction of 1,2-Dichloroethane Sorbed onto Clay Minerals
【24h】

Spectrpscopic Evidence for the Rate-Limited Accumulation of a Persistent Fraction of 1,2-Dichloroethane Sorbed onto Clay Minerals

机译:吸附在粘土矿物上的1,2-二氯乙烷持久组分的限速积累的光谱学证据

获取原文
获取原文并翻译 | 示例
           

摘要

Diffuse reflectance infrared spectra are collected in situ as a function of time during the sorption/desorption of 1,2-dichloroethane on montmorillonite and kaolinite. The spectra indicate that the sorptive becomes associated with the clay minerals in both a liquid and a labile vapor state, confirming previous results obtained with illite as the sorbent. They also provide evidence for an additional sorbed species that accumulates at a rate quite different from those of the other two. Features characteristic of this species persist in the spectra for periods of days after desorption is initiated. The results are interpreted in the context of sorbent porosity and the existence of a network of narrow pores that limits the rates of both sorption and desorption for the persistent species.
机译:在蒙脱石和高岭石上1,2-二氯乙烷的吸附/解吸过程中,漫反射红外光谱随时间随时间收集。光谱表明,吸附剂在液态和不稳定蒸气状态下都与粘土矿物结合,从而证实了以伊利石作为吸附剂获得的先前结果。它们还为其他吸附物质的积累提供了证据,这些物质的吸收速率与其他两种物质完全不同。解吸开始后的几天内,该物种的特征仍会保留在光谱中。在吸附剂孔隙率和窄孔网络的存在的背景下解释了结果,这些网络限制了持久性物质的吸附和解吸速率。

著录项

  • 来源
    《Environmental Science & Technology》 |1995年第7期|p.1760-1765|共6页
  • 作者单位

    Department of Soil and Environmental Sciences, University of California, Riverside, Riverside, California 92521;

  • 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 环境化学;
  • 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