GB/T 18608-2012 Active National standards

GB/T 18608-2012 Determination of nickel,vanadium,iron,and sodium in crude oils and residual fuels by flame atomic absorption spectrometry

Publish Date: 2012-12-31 Implement Date: 2013-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 18608-2012

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Crude oil

ICS Name: Crude oil

Publish Date: 2012-12-31

Implement Date: 2013-07-01

Pages: 11 pages

Scope

This standard specifies two methods for determining the nickel, vanadium, iron, and sodium content in crude oil and residual oil using flame atomic absorption spectrometry. Method A involves acid digestion to determine the nickel, vanadium, and iron content in the sample, while Method B employs organic solvents to determine the nickel, vanadium, and sodium content in the sample. Method B uses oil-soluble metal elements as standard samples to determine the content of oil-soluble metal elements and is not suitable for quantitatively determining samples containing non-oil-soluble particles. Therefore, the total content of metal elements measured by this method may be underestimated, especially for sodium, which exists in the form of inorganic sodium salts.
This standard applies to the determination of nickel, vanadium, iron, and sodium content in crude oil and residual oil. For different elements, the precision of the two measurement methods differs, and the appropriate method can be selected based on the precision requirements of the specific analysis.