1.1该方法将测量通过保持在177℃的颗粒物过滤器的气态盐酸和氢氟酸以及其他气态氯化物和氟化物的浓度 ° C（350 ° F） 。该方法专门用于对矿物煅烧行业和其他固定来源的燃烧废水进行采样，其中颗粒物的反应性/吸附性可能会影响测量。 1.2该方法利用离子色谱法对水样进行定量，因此仅测量C1 - 和F - 离子。 1.3基于一- 在一小时的采样运行中，该方法将提供已知准确度和精密度的结果，用于0.5 ppm（v）干或更高浓度的烟囱中的氯化物和氟化物。延长运行时间并对更大体积的废水进行采样将使范围扩大到较低的浓度。 1.4该方法包括用于评估测试结果偏差的可选测试后质量保证程序，以及用于评估测试结果精度的可选配对样本序列运行。 ====意义和用途====== 该现场试验方法提供了干基氯化物和氟化物浓度结果。 计算质量排放率时，假设气态氯化物和氟化物的浓度数据为盐酸气体和氢氟酸气体。 如果已知出水体积流量，则可以计算HCl和HF的质量排放率。可通过执行EPA方法1计算体积流量 – 4或其等价物。 该现场试验方法提供的HCl数据具有偏差和精度，与第14节中的值一致。此外，可以通过进行post评估每个测试的测试特定偏差- 测试质量保证检查。该程序被确定为可选程序，该程序的性能取决于测试特定的数据质量目标和数据的最终用途。 可通过成对运行来确定测试特定精度。配对运行有助于识别可能的可疑数据，并在一列列车失效时提供备份。执行配对运行取决于测试特定的数据质量目标。 气态HCl与氨（NH）的反应 3. )形成固体氯化铵（NH 4. Cl）是众所周知的。 在矿物煅烧设施的袋式除尘器和静电除尘器出口的烟囱温度下（即250至450 ° F或121至232 ° C） ，气体HCl/NH之间的平衡 3. ，浓缩NH 4. Cl（s）和出水颗粒物可能存在。不可能知道采样系统中这些化合物的气相和颗粒相之间的准确分配比。此外，很难在各种采样系统组件内控制这些分配反应的影响。 笔记 4-当试图在氯化铵和氨存在的情况下定量HCl（g）时，应注意使用该方法。

1.1 This method will measure the concentration of gaseous hydrochloric and hydrofluoric acids, and other gaseous chlorides and fluorides that pass through a particulate matter filter maintained at 177 ° C (350 ° F). This method is specific for sampling combustion effluent from mineral calcining industries and other stationary sources where the reactive/adsorptive nature of the particulate matter may affect measurements. 1.2 This method utilizes ion chromatography to quantify the aqueous samples, and thus measures only the C1 - and F - ions. 1.3 Based on a one-hour sampling run, the method will provide results of known accuracy and precision for chloride and fluoride in-stack concentrations of 0.5 ppm (v) dry or greater. Extending the run duration and sampling a greater volume of effluent will extend the range to lower concentrations. 1.4 This method includes optional post-test quality assurance procedures to assess the bias of the test results, and optional paired sample train runs to assess the precision of test results. ====== Significance And Use ====== This field-test method provides chloride and fluoride concentration results on a dry basis. Concentration data for gaseous chlorides and fluorides are assumed to be hydrochloric acid gas, and hydrofluoric acid gas when calculating mass emission rates. Mass emission rates of HCl and HF can be calculated if the effluent volumetric flow rate is known. Volumetric flow rates can be calculated by conducting EPA Methods 1 – 4 or their equivalents. This field test method provides data having bias and precision for HCl consistent with the values in Section 14. In addition, the test-specific bias can be assessed for each test by conducting the post-test quality assurance check. The procedure is identified as optional, and the performance of this procedure depends on the test specific data quality objectives, and end use of the data. The test-specific precision may be determined by conducting paired-runs. Paired runs aid in identifying possible suspect data and provide backup in the event one train is invalidated. Performing paired runs depends on the test-specific data quality objectives. The reaction of gaseous HCl with ammonia (NH 3 ) to form solid ammonium chloride (NH 4 Cl) is well known. At stack temperatures common to the exits of baghouses and ESPs at mineral calcining facilities (that is, 250 to 450 ° F or 121 to 232 ° C), an equilibration between the gaseous HCl/NH 3 , the condensed NH 4 Cl(s), and the effluent particulate matter can exist. It is impossible to know the exact partition ratio between the gas and particulate phases of these compounds in the sampling system. Furthermore, it is very difficult to control the effects of these partitioning reactions within the various sampling system components. Note 4—Use of this method is cautioned when trying to quantify HCl (g) in the presence of ammonium chloride and ammonia.