BS 2000-149-1993 石油和石油产品的试验方法.石油产品.润滑油和添加剂.磷含量的测定.喹啉磷钼酸盐法

标准号：BS 2000-149-1993
中文标准名称：石油和石油产品的试验方法.石油产品.润滑油和添加剂.磷含量的测定.喹啉磷钼酸盐法
英文标准名称：Methods of test for petroleum and its products - Petroleum products - Lubricating oils and additives - Determination of phosphorus content - Quinoline phosphomolybdate method
标准类型：E34
发布日期：1993/2/28 12:00:00
实施日期：1993/2/28 12:00:00
中国标准分类号：E34
国际标准分类号：75.100
适用范围：This International Standard specifies a quinoline phosphomolybdate method for the determination of the phosphorus content of unused lubricating oil and additive concentrates. The method is applicable to products containing any of the phosphorus compounds in normal use and having phosphorus contents between 0,006 and 10,0 % Im/m).NOTE - There is no reason to doubt its applicability to filtered, used lubricating oils, but no systematic study of this application has been made.1.2 The method is free from most interferences because the high insolubility of the quinoline phosphomolybdate precipitate toads to constant composition and freedom from most adsorbed or occluded impurities, especially from cations which would otherwise interfere in the subsequent titration of the precipitate.NOTE — Barium, calcium, magnesium, zinc, iron, aluminium, alkali —Hi, citric acid and citrates, chromium up to 18 times the phosphorus content and titanium up to 3,5 times do not interfere with the method.