Titration method improves water measurement

Journal Article · Mon Dec 01 04:00:00 EST 1986 · Oil Gas J.; (United States)

OSTI ID:6960924

Kunkel, S; De Sandro, J

Water content in petroleum products and bituminous materials can be determined by a new method using a Coulometric Karl Fischer titrator. The method offers reduced analysis time and operator bias, and increased detection sensitivity and improved precision compared to the existing method jointly adopted as a standard by the American Society for Testing and Materials (ASTM), the Americal Petroleum Institute (API), and the Institute of Petroleum (IP). Measurement is accurate, precise, rapid, and flexible when the titrator is used in conjunction with a liquid-evaporation accessory and pyridine-free Karl Fischer reagents. To validate the capability of the new method, a study was conducted to compare the existing standard method with the titration method. The study was conducted in a commercial, production-oriented laboratory, using a variety of recently obtained petroleum samples. Water content was determined for each sample by both methods, and the results were compared and statistically evaluated for correlation to the standard method, precision, detection sensitivity, and analysis time.

• Research Organization: Commercial Testing and Engineering Co., South Holland, IL
• OSTI ID: 6960924
• Journal Information: Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 84:48; ISSN OIGJA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
ACCURACY
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
EVAPORATORS
MATERIALS
MATHEMATICS
MOISTURE
PETROLEUM PRODUCTS
REAGENTS
SAMPLING
SENSITIVITY
STANDARDS
STATISTICS
TIME DEPENDENCE
TITRATION
VOLTAMETRY