BS ISO 6296:2003
石油及其产品的试验方法.石油产品.水的测定.电位测量卡尔费休滴定法

Methods of test for petroleum and its products - Petroleum product - Determination of water - Potentiometric Karl Fischer titration method

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标准号

BS ISO 6296:2003

发布

2003年

发布单位

英国标准学会

当前最新

BS ISO 6296:2003

 

 

适用范围

This International Standard specifies a method for the direct determination of water in petroleum products boiling below 390 ℃. It covers the mass fraction range 0,003 % (m/m) to 0,100 % (m/m). This International Standard may be applicable to petroleum products boiling above 390 ℃ and lubricating base oils. However, the precision has not been established for these materials. NOTE 1 A number of substances and classes of compounds associated with condensation or oxidation-reduction reactions interfere in the determination of water by Karl Fischer titration. In petroleum products, the most common interferences are hydrogen sulfide and mercaptan sulfur, however, concentrations of these below 0,003 % (m/m) as sulfur will not cause significant interference over the range 0,003% (m/m) to 0,100% (m/m) water. Other organic sulfur compounds commonly present such as sulfides, disulfides and thiophenes, do not interfere. NOTE 2 For the purposes of this International Standard, the terms "% (m/m)" and "% (V/V)" are used to represent the mass and volume fractions of a material respectively.

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