• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Geochemical Journal >Some practical aspects of an on-line chromium reduction method for D/H analysis of natural waters using a conventional IRMS
【24h】

Some practical aspects of an on-line chromium reduction method for D/H analysis of natural waters using a conventional IRMS

机译：使用常规IRMS对天然水进行D / H分析的在线铬还原方法的一些实际方面

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

Some practical aspects were investigated for an on-line chromium reduction technique for measurement of D/H variations of natural waters using a conventional isotope ratio mass spectrometer. They include the configuration of the reaction system, the precautions taken before mass spectrometric measurement, the reproducibility of deltaD measurement, memory effects and salt effects. Approximately 150 water samples of 2 mul can be run with Cr powder (60 mesh) weighing approximately 16 g mixed with quartz glass sand (10 mesh). The mixture functions to avoid choking of the Cr reactor due to volume increase as Cr oxidation proceeds. The Cr powder-quartz glass sand mixture is placed in the middle of a quartz glass reaction tube and heated to >800degreesC. The reproducibility is ca. +/-0.5parts per thousand if care is taken for the above precautions and memory effects. This system can be easily installed on a conventional IRMS at low cost.
机译：对于使用常规同位素比率质谱仪测量天然水的D / H变化的在线铬还原技术，研究了一些实际方面。它们包括反应系统的配置，质谱测量之前采取的预防措施，deltaD测量的可重复性，记忆效应和盐效应。大约150份2 mul的水样品可以与重约16 g的Cr粉（60目）与石英玻璃砂（10目）混合使用。混合物的功能是避免由于Cr氧化过程中体积增加而导致Cr反应器堵塞。将Cr粉末-石英玻璃砂混合物置于石英玻璃反应管的中间，并加热至> 800℃。重现性约为。如果注意上述预防措施和记忆效应，则为千分之+/- 0.5份。该系统可以低成本轻松地安装在常规IRMS上。

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