ASTM D3230 standard test method for salts in crude oil (Electrometric Method)
1. Scope
1.1 This test method covers the determination of the approximate chloride (salts) concentration in crude oil. The range of concentration covered is 0 to 500 mg/kg or 0 to 150 lb/1000 bbl as chloride concentration/volume of crude oil.
1.2 This test method measures conductivity in the crude oil due to the presence of common chlorides, such as sodium, calcium, and magnesium. Other conductive materials may also be present in the crude oil.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3.1 Acceptable concentration units are g/m3 or PTB (lb/1000 bbl).
1.4 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 warning statements, see 7.3, 7.4, and 7.11.
2. Referenced Documents
2.1 ASTM Standards:
D381 Test Method for Gum Content in Fuels by Jet Evaporation
D1193 Specification for Reagent Water
D4928 Test Methods for Water in Crude Oils by Coulometric Karl Fischer Titration
D5002 Test Method for Density and Relative Density of Crude Oils by Digital Density Analyzer
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 PTB - lb/1000 bbl.
3.1.2 salts in crude oil - commonly, chlorides of sodium, calcium, and magnesium dissolved in crude oil. Other inorganic chlorides may also be present.
