API MPMS 10.9 Manual of Petroleum Measurement Standards Chapter 10 Sediment and Water Section 9 Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration

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API MPMS 10.9 Document Information:

Title
Manual of Petroleum Measurement Standards Chapter 10 Sediment and Water Section 9 Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration

American Petroleum Institute

Publication Date:
Dec 1, 2002

Scope:

This test method covers the determination of water in the range from 0.02 to 5 mass or volume % in crude oils. Mercaptan (RSH) and sulfide (S^- or H₂S) as sulfur are known to interfere with this test method, but at levels of less than 500 µg/g (ppm), the interference from these compounds is insignificant (see Section 5).

This test method can be used to determine water in the 0.005 to 0.02 mass % range, but the effects of the mercaptan and sulfide interference at these levels has not been determined.

This test method is intended for use with standard commercially available coulometric Karl Fischer reagent.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 7.

Keywords:

coulometric

crude oils

homogenization

Karl Fischer

shear mixer

titration

water

water in crude oils

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