GB/T 11133-2015 in English
VALIDStandard test method for determination of water in petroleum products,lubricating oils,and additives―Coulometric Karl Fischer titration method
- Issued on:2015-12-31
- Implemented on:2016-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
《GB/T 11133-2015石油产品、润滑油和添加剂中水含量的测定 卡尔费休库仑滴定法》由TC280（全国石油产品和润滑剂标准化技术委员会）归口，TC280SC1（全国石油产品和润滑剂标准化技术委员会石油燃料和润滑剂分会）执行，主管部门为国家标准化管理委员会。
本标准规定了使用自动滴定仪直接测定石油产品和烃类化合物中水含量的方法。直接滴定法测定水含量范围为10mg/kg~25000mg/kg。本标准也规定了间接测定样品水含量的方法,通过加热的方法,分离出试样中的水分,并由干燥的惰性气体载入到卡尔费休滴定仪中分析。硫醇、硫化物、硫和其他化合物对试验方法的干扰见第4章。
本标准适用于采用市售卡尔费休库仑试剂测定添加剂、润滑油、基础油、自动传动液、烃类溶剂和其他石油产品中的水含量。通过选择合适的试样进样量,本标准的水含量测定范围从毫克/千克水平到质量百分含量水平。
注:采用卡尔费休容量法测定液体石油产品水含量的方法参见附录 A。
Introduction
1. Standard Overview
GB/T11133-2015 "Determination of Water Content in Petroleum Products, Lubricants and Additives - Karl Fischer Coulometric Titration" is an important standard for determining the water content in petroleum products, lubricants and additives. This standard replaces the old version GB/T11133-1989 and adopts the internationally advanced card
2. Standard background and technological evolution
| Comparison dimensions | GB/T11133-2015 | GB/T11133-1989 |
|---|---|---|
| Scope of application | Applicable to the determination of water content in petroleum products, lubricants and additives | Only applicable to the determination of water content in liquid petroleum products |
| Measurement method | Karl Fischer coulometric titration | Karl Fischer volumetric method |
| Analysis of interference factors | Added detailed analysis of interfering factors such as mercaptans and sulfides | No systematic analysis of interfering factors |
Explanation of professional terms
Karl Fischer coulometric titration: a method for determining water content through electrochemical reaction and Faraday's law. Its core is to use the 1:1 reaction between iodine and water to calculate the water content through coulomb charge.
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