API PUBL 4611-1995

$23.40

Interlaboratory Study of EPA Methods 1662, 1654A, and 1663 for the Determination of Diesel, Mineral and Crude Oils in Drilling Muds from Offshore Oil and Gas Industry Discharges

Published By	Publication Date	Number of Pages
API	1995	84

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Description

The effluent limitation guidelines being promulgated by the United States Environmental Protection Agency (EPA) for the offshore oil and gas industry include the prohibition of the discharge of diesel oil in drilling muds and drill cuttings from offshore oil and gas platforms. Analytical test procedures have been developed by the EPA to allow monitoring for diesel oil in drilling fluids whenever necessary to ensure compliance with the regulation. In the development of these analytical techniques, the EPA and the Technology/Diesel Analysis Work Group of the American Petroleum Institute (API) conducted studies to evaluate various extraction and analytical measurement techniques for reliable determination of diesel, mineral, and crude oils in drilling muds. The resulting Method 1662 (Soxhlet/Dean-Stark Extraction and Gravimetry for Total Extractable Material in Drilling Mud), Method 1654A (HPLC/UV for Polynuclear Aromatic Hydrocarbons Content of Oil), and Method 1663 (GC/FID for differentiation of Diesel and Crude Oil).

This report describes the methods and presents the results of the inter-laboratory validation study of the methods. The large volume of raw data of this inter-laboratory study, which includes calibration documentation, chromatograms, and EPA report forms are not included in this report, but are available in retrievable record from the American Petroleum Institute, Washington, D.C.

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