首页> 外文会议>The proceedings of AD 2007: Process control amp; compliance: analytical solutions >ASSURING TRACEABLE ACCURACY OF TRACE CONCENTRATION GAS STANDARDS
【24h】

ASSURING TRACEABLE ACCURACY OF TRACE CONCENTRATION GAS STANDARDS

机译:确保痕量气体标准的可追溯准确性

获取原文
获取原文并翻译 | 示例

摘要

Regulated monitoring (environmental, pharmaceutical, etc.), legal considerations in workplacernmonitoring, and all of the documented quality assurance programs require accuracy of analyticalrnmeasurements be traceable to national standards. Currently there are over 500 compounds ofrnenvironmental and/or industrial interest that are measured as vapors at trace (ppm, ppb, or ppt)rnconcentrations. Yet there are less than 50 compounds for which there are trace level vaporrnreference standards. Establishing calibration accuracy for the other 400+ compounds is arnsignificant problem.rnTraceability of trace vapor mixtures to the National Institute of Standards and Technologyrn(NIST) can often be established through fundamental physical standards. This paper comparesrnseveral dynamic blending techniques based on fundamental measurements, defines the knownrnerror sources of each and describes methods for estimating the accuracy of mixtures produced.
机译:规范的监控(环境,药品等),工作场所监控中的法律考虑以及所有已记录的质量保证计划均要求分析测量的准确性可追溯至国家标准。当前,有超过500种具有环境和/或工业价值的化合物以痕量(ppm,ppb或ppt)rn浓度的蒸气测量。但是,只有不到50种化合物具有痕量的蒸气参考标准。建立其他400多种化合物的校准精度是一个很大的问题。经常可以通过基本的物理标准来确定痕量蒸气混合物对美国国家标准技术研究院(NIST)的追溯性。本文比较了基于基本测量的几种动态混合技术,定义了每种混合技术的已知误差源,并描述了估计所产生混合物的准确性的方法。

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