1.1 该现场试验方法采用萃取取样系统将固定源流出物引导至FTIR光谱仪，以识别和量化气体化合物。提供了浓度结果。本试验方法可能适用于测定以下化合物:( 1. )有足够的蒸汽压输送到FTIR光谱仪，并( 2. )吸收足够的红外辐射进行检测。 1.2 该现场测试方法提供了对来自固定源的提取气体样本的近实时分析。含水量高的气流可能需要调节，以尽量减少水蒸汽施加的过度光谱吸收特征。 1.3 该现场测试方法需要编制特定于源的现场测试计划。测试计划必须包括以下内容:( 1. )特定目标分析物的识别( 2. )特定于测试设施源废水的已知分析干扰物( 3. )满足特定测试要求所需的测试数据质量，以及( 4. )实验室测试结果（见 附件A1 测试计划要求）。 1.4 FTIR仪器范围应足以测量从高ppm（v）到ppb（v），并可以使用以下任何或所有程序扩展到更高或更低的浓度: 1.4.1 气体吸收池路径长度可以增加或减少， 1.4.2 可以修改样品调节系统，以减少水蒸气、CO 2. ，以及其他干扰化合物，使其达到允许对目标化合物进行量化的水平，以及 1.4.3 可以修改分析算法，以最小化干扰吸光度带，或对目标分析物使用强/弱吸光度带。 1.5 实际最小可检测浓度是仪器、化合物和干扰特定的（参见 附件A2 用于估计可达到的最小可检测浓度（MDC）的程序。FTIR测量系统对单个目标分析物的实际灵敏度取决于以下因素: 1.5.1 每个目标分析物的特定红外吸收率（信号）和波长分析区域， 1.5.2 仪表噪音的大小（参见 附录A6 )，和 1.5.3 样气中干扰化合物的浓度（尤其是水分和CO的百分比 2. )，以及这些化合物在用于量化目标分析物的波长区域中产生的光谱重叠量。 1.5.4 任何采样系统干扰，如吸附或放气。 1.6 实践 E168 和 E1252 建议额外阅读。 1.7 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.8 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 第节介绍了其他安全预防措施 9 . 1.9 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 FTIR测量提供了关于- 源头废水的现场分析。 5.2 本试验方法提供了检测分析物的体积浓度。使用特定化合物的分子量、流出物体积流率、温度和压力将体积浓度转换为质量排放率有助于确定该化合物对大气的影响。 5.3 将已知浓度的目标分析物加入废水中，以评估采样和分析系统对目标分析物的传输和量化的有效性，并确保收集的数据有意义。 5.4 FTIR测量数据用于评估工艺条件、排放控制装置，并确定是否符合排放标准或其他适用许可证。 5.5 必须在测试计划中规定和概述每个特定测试计划的数据质量目标( 附件A1 ). 5.

1.1 This field test method employs an extractive sampling system to direct stationary source effluent to an FTIR spectrometer for the identification and quantification of gaseous compounds. Concentration results are provided. This test method is potentially applicable for the determination of compounds that ( 1 ) have sufficient vapor pressure to be transported to the FTIR spectrometer and ( 2 ) absorb a sufficient amount of infrared radiation to be detected. 1.2 This field test method provides near real time analysis of extracted gas samples from stationary sources. Gas streams with high moisture content may require conditioning to minimize the excessive spectral absorption features imposed by water vapor. 1.3 This field test method requires the preparation of a source specific field test plan. The test plan must include the following: ( 1 ) the identification of the specific target analytes ( 2 ) the known analytical interferents specific to the test facility source effluent ( 3 ) the test data quality necessary to meet the specific test requirements and ( 4 ) the results obtained from the laboratory testing (see Annex A1 for test plan requirements). 1.4 The FTIR instrument range should be sufficient to measure from high ppm(v) to ppb(v) and may be extended to higher or lower concentrations using any or all of the following procedures: 1.4.1 The gas absorption cell path length may be either increased or decreased, 1.4.2 The sample conditioning system may be modified to reduce the water vapor, CO 2 , and other interfering compounds to levels that allow for quantification of the target compound(s), and 1.4.3 The analytical algorithm may be modified such that interfering absorbance bands are minimized or stronger/weaker absorbance bands are employed for the target analytes. 1.5 The practical minimum detectable concentration is instrument, compound, and interference specific (see Annex A2 for procedures to estimate the achievable minimum detectable concentrations (MDCs)). The actual sensitivity of the FTIR measurement system for the individual target analytes depends upon the following: 1.5.1 The specific infrared absorptivity (signal) and wavelength analysis region for each target analyte, 1.5.2 The amount of instrument noise (see Annex A6 ), and 1.5.3 The concentration of interfering compounds in the sample gas (in particular, percent moisture and CO 2 ), and the amount of spectral overlap imparted by these compounds in the wavelength region(s) used for the quantification of the target analytes. 1.5.4 Any sampling system interferences such as adsorption or outgassing. 1.6 Practices E168 and E1252 are suggested for additional reading. 1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Additional safety precautions are described in Section 9 . 1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 The FTIR measurements provide for multicomponent on-site analysis of source effluent. 5.2 This test method provides the volume concentration of detected analytes. Converting the volume concentration to a mass emission rate using a particular compound’s molecular weight, and the effluent volumetric flow rate, temperature and pressure is useful for determining the impact of that compound to the atmosphere. 5.3 Known concentrations of target analytes are spiked into the effluent to evaluate the sampling and analytical system’s effectiveness for transport and quantification of the target analytes, and to ensure that the data collected are meaningful. 5.4 The FTIR measurement data are used to evaluate process conditions, emissions control devices, and for determining compliance with emission standards or other applicable permits. 5.5 Data quality objectives for each specific testing program must be specified and outlined in a test plan ( Annex A1 ). 5