標準號：BS 2000-149-1993
中文標準名稱：石油和石油產品的試驗方法.石油產品.潤滑油和添加劑.磷含量的測定.喹啉磷鉬酸鹽法
英文標準名稱：Methods of test for petroleum and its products - Petroleum products - Lubricating oils and additives - Determination of phosphorus content - Quinoline phosphomolybdate method
標準類型：E34
發布日期：1993/2/28 12:00:00
實施日期：1993/2/28 12:00:00
中國標準分類號：E34
國際標準分類號：75.100
適用范圍：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.