1.1 该在线测试方法包括通过加热或气提进行氢交换和脱气，并提供测定阴离子（例如Cl）的方法 − ，所以 4. — ，否 3. − ，和F − )通过测量电导率，在25°C时，高纯水以及发电厂的蒸汽和水样中的二氧化碳浓度低至2μg/L（2 ppb），二氧化碳浓度为0.01至10 mg/L（ppm）。 1.2 所有阴离子（OH除外）的电导率 − )是确定的，而不是单个阴离子的电导率（如果存在多个阴离子）。如果只存在一个阴离子（例如Cl − 差不多吧 4. —− )，参考第节 4. , 表1 和 表2 或 无花果。1- 3. 提供氯化物或硫酸盐和CO 2. 浓度 1.3 通过使用用于电导率和温度测量的现代微处理器仪器和用于补偿的适当温度补偿算法，通过使用最终样品冷却至25°C，或两者兼而有之，提高了该测试方法的准确性。 1.4 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 1.5 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 5.1 本试验方法可作为一种有用的诊断工具，用于测量高纯度水、锅炉给水和高压发电厂蒸汽冷凝液中的杂质并检测其来源，以及某些需要高纯度水的行业的工艺用水中的杂质。 5.2 这些杂质的测量对这些行业来说最为重要，因为冷凝器泄漏等事件可能导致工厂停运或产品污染。此外，凝结水精处理和补给水设备故障也可能导致水质偏差。 5.3 本试验方法提供的连续测量和趋势特别重要，可以表明需要对水处理或操作程序和设备进行修正。与更精确的实验室方法（如离子色谱法和原子吸收法）相比，本试验方法的设备更坚固，更适合在工厂操作条件下安装。

1.1 This on-line test method includes hydrogen exchange and degassing by heating or gas stripping and provides means for determining anions (such as Cl − , SO 4 — , NO 3 − , and F − ) at levels as low as 2 μg/L (2 ppb) and carbon dioxide at the level of 0.01 to 10 mg/L (ppm) at 25°C in high purity water and in steam and water samples in power plants by measuring electrical conductivity. 1.2 The conductivity of all anions (except OH − ) is determined and not the conductivity of an individual anion if more than one is present. If only one anion is present (such as Cl − or SO 4 —− ), reference to Section 4 , Table 1 and Table 2 or Figs. 1- 3 provides the chloride or sulfate and CO 2 concentration. 1.3 This test method has been improved in accuracy by using a modern microprocessor instrument for conductivity and temperature measurement and appropriate temperature compensation algorithms for compensation, by using final sample cooling to 25°C, or both. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 5.1 This test method can be a useful diagnostic tool in measuring the impurities and detecting their sources in high purity water, boiler feed water and steam condensate of high pressure power plants, and in the process water of certain industries requiring high purity water. 5.2 The measurement of such impurities is most important to these industries since plant outages or product contamination can result from events such as condenser leakage. Also, water quality deviations can occur from condensate polishing and makeup water equipment malfunctions. 5.3 The continuous measurement and trends provided by this test method are of particular interest and can indicate the need for corrections in water treating or operating procedures and equipment. The equipment for this test method can be considered more rugged and adaptable to installation under plant operating conditions than the more accurate laboratory methods, such as ion chromatography and atomic absorption.