固体回收燃料 使用烘箱干燥法测定水分含量 第2部分：采用简化方法测定总水分

[中文适用范围]： 本文件规定了通过烘箱干燥实验室样品测试部分来测定其水分含量的方法。本方法适用于现场的常规生产控制，例如，如果不需要高精度的水分含量测定。本方法适用于所有固体回收燃料。 如果固体回收燃料含有大量油分，建议使用较低温度（例如 50°C ± 10°C）和较长的干燥时间直至达到恒重。作为替代方案，建议使用卡尔·费休滴定法（参见 ISO 760）。 注1：回收燃料的总水分含量不是一个绝对值，因此其测定的标准化条件对于实现可比性测定是必不可少的。 注2：当用于回收材料时，“水分含量”一词可能具有误导性，因为固体回收材料（例如生物质）通常含有不同数量的挥发性化合物（提取物），这些化合物在通过烘箱干燥法测定一般分析样品的水分含量时可能会蒸发。 [外文原描述]： This document specifies a method for determination of the moisture content in a test portion of the laboratory sample by drying the test portion in an oven. This method is applicable for routine production control on site, e.g. if a high precision of the determination of moisture content is not required. It is applicable to all solid recovered fuels. If the solid recovered fuel contains large amounts of oil-fractions, a lower temperature is advisable (e.g. 50 °C ± 10 °C) and a longer drying time until constant mass is achieved. As an alternative, the Karl-Fischer-Titration-Method (see ISO 760 [ 1 ] ) is advisable. NOTE 1 The total moisture content of recovered fuels is not an absolute value and therefore standardised conditions for its determination are indispensable to enable comparative determinations. NOTE 2 The term moisture content when used with recovered materials can be misleading since solid recovered materials, e.g. biomass, frequently contain varying amounts of volatile compounds (extractives) which can evaporate when determining the moisture content of the general analyses sample by oven drying.