石油产品和沥青材料 水分的测定 蒸馏法

[中文适用范围]： 本国际标准规定了通过蒸馏法测定石油产品、沥青、焦油和这些材料衍生产品（不包括乳液）中水分含量不超过 25% 的方法。 表 3 列出了制定本测试方法期间考虑的具体产品。 本国际标准可用于测定超过 25% 的含水量。 然而，尚未确定超过 25% 的精度数据。 挥发性水溶性物质（如果存在）以水的形式测量。 注 1：了解石油产品的水含量对于产品的精炼、购买、销售和转让非常重要。 注2：用本方法测定的水量可用于修正产品贸易交接中涉及的体积。 [外文原描述]： This International Standard specifies a method for determination of water up to 25 % in petroleum products, bitumens, tars and products derived from these materials, excluding emulsions, by the distillation method. The specific products considered during the development of this test method are listed in Table 3. This International Standard may be used to determine water content in excess of 25 %. However, no precision data has been determined at levels greater than 25 %. Volatile water-soluble material, if present, is measured as water. NOTE 1 A knowledge of the water content of petroleum products is important in the refining, purchase, sale and transfer of products. NOTE 2 The amount of water determined by this method can be used to correct the volume involved in the custody transfer of product.