本方法用于使用库仑卡尔·费希尔滴定法测定液态烃（石脑油、汽油、煤油、柴油）或其他石油产品（环丁砜和其他溶剂）在室温下的含水量。滴定仪的定量下限为10µg水。这导致样品的适用浓度范围为10 mg/kg（质量ppm）至2质量%-水。重碳氢化合物（不溶性油和蜡）和其他在室温下呈粘性或固体的碳氢化合物可使用蒸发器进行调节，以测定溶解的微量水，并适用于浓度范围为20 mg/kg至2质量%%水的样品。含水量小于500 mg/kg的样品可在附录中所述的准备好的干燥瓶或注射器中收集。 注1和注2讨论了湿度和常见干扰的其他应用。

This method is for determining the water content of liquid hydrocarbons (naphtha, gasoline, kerosene, diesel), or other petroleum products (sulfolane and other solvents) that are liquid at room temperature using coulometric Karl Fisher titration. The lower limit of quantitation for the titrator is 10 µg of water. This results in an applicable concentration range for a sample of 10 mg/kg (massppm) to 2 mass-% water.Heavy hydrocarbons (insoluble oils and waxes) and other hydrocarbons that are viscous or solid at room temperature can be accommodated using a vaporizer for determining dissolved trace water and is applicable to samples over a concentration range of 20 mg/kg to 2 mass-% water.Samples containing less than 500 mg/kg of water can be collected in prepared dry bottles or syringes as described in the Appendix.Other applications for moisture and common interferences are discussed in Notes 1 and 2.