Estimating maximum concentrations for open path monitoring along a fixed beam path.
Estimating maximum concentrations for open path monitoring along a fixed beam path.
复制标题
估计沿固定光束路径的开放路径监测的最大浓度。
DOI：
10.1080/10473289.1999.10463820
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
Levine,S
中科院分区：
文献类型：
--
作者：
Yost,MG;Hashmonay,RA;Zhou,Y;Spear,R;Park,D;Levine,S
研究人员已将开路光学传感技术应用于各种工作场所和环境监测问题。通常，这些数据以路径平均(或路径集成)浓度的形式报告。当评估沿射束路径的潜在人体暴露时，该路径平均值并不总是提供信息，因为沿路径的浓度可能与射束平均有很大不同。这项研究的重点是得到一种方法，以估计在固定的开放光束路径上的污染物浓度上限。这里所采用的方法使用统计模型来基于路径平均值和从沿光束路径的点样本计算的空间变异性的测量的组合来估计上限浓度。计算机模拟和在控制通风室中的实验测试结果表明，该模型对束流路径上的最大浓度给出了保守的估计。这种方法可能在工作场所或关注最大浓度的地方有许多开放路径监测的应用。
Researchers have applied open path optical sensing techniques to a variety of workplace and environmental monitoring problems. Usually these data are reported in terms of a path-average (or path-integrated) concentration. When assessing potential human exposures along a beam path, this path-average value is not always informative, since concentrations along the path can vary substantially from the beam average. The focus of this research is to arrive at a method for estimating the upper-bound in contaminant concentrations over a fixed open beam path. The approach taken here uses a statistical model to estimate an upper-bound concentration based on a combination of the path-average and a measure of the spatial variability computed from point samples along the beam path. Results of computer simulations and experimental testing in a controlled ventilation chamber indicate that the model produced conservative estimates for the maximum concentration along the beam path. This approach may have many applications for open path monitoring in workplaces or wherever maximum concentrations are a concern.