BS EN 16841-2:2016描述了确定污染程度的羽流方法 通过人类小组现场直接观察，可识别特定来源的气味 特定气象条件下的成员。羽流法涉及确定可识别物质的存在或不存在（是/否） 来自特定气味排放源的羽流内部和周围的气味 特定气象条件下的排放情况（特定风向、风速） 以及边界层湍流）。测量单位是有无可识别的物体 气味源下风处特定位置的气味。羽流的范围被评估为 从不存在到存在可识别气味的过渡。本标准的主要应用是为测定 欧盟成员国的气味羽流范围。结果通常用于确定潜在暴露于可识别 气味，或根据羽流范围，使用反向扩散估计总排放率 模特儿。本欧洲标准的适用范围包括确定 在特定气象条件下（例如风），可识别的气味羽流从源头顺风而下 方向、风速、湍流等（见7.3.2）。本欧洲标准不包括: 环境气味强度的测量；环境气味的享乐音调测量；在评估中测量环境空气中较长时间内的气味暴露 地区用反向扩散法计算羽流估算的源排放率 模特儿。本文概述了现有气味暴露评估方法之间的相互作用 附录A包括符合EN 13725的网格法（第1部分）、羽流法（第2部分）和嗅觉测定法。交叉引用:EN 13725:2003ISO 5492:2008购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS EN 16841-2:2016 describes the plume method for determining the extent of recognizable odours from a specific source using direct observation in the field by human panel members under specific meteorological conditions.The plume method involves the determination of the presence or absence (YES/NO) of recognizable odours in and around the plume originating from a specific odorant emission source, for a specific emission situation and under specific meteorological conditions (specific wind direction, wind speed and boundary layer turbulence). The unit of measurement is the presence or absence of recognizable odours at a particular location downwind of a source. The extent of the plume is assessed as the transition of absence to presence of recognizable odour.The primary application of this standard is to provide a common basis for the determination of the odour plume extent in the member states of the European Union.The results are typically used to determine a plausible extent of potential exposure to recognizable odours, or to estimate the total emission rate based on the plume extent, using reverse dispersion modelling.The field of application of this European Standard includes the determination of the extent of the recognizable odour plume downwind from a source, under specific meteorological conditions (e.g. wind direction, wind speed, turbulence, etc. (see 7.3.2).This European Standard does not include:the measurement of intensity of ambient odours;the measurement of hedonic tone of ambient odours;the measurement of the odour exposure in ambient air over a longer time period in an assessment area;the calculation of estimated source emission rate from plume assessment using reverse dispersion modelling.An overview of the interaction between existing odour exposure assessment methods is given in Annex A including grid method (Part 1), plume method (Part 2) and olfactometry according EN 13725.Cross References:EN 13725:2003ISO 5492:2008All current amendments available at time of purchase are included with the purchase of this document.