This document specifies a method for the determination of arsenic content in crude oil pretreated by a closed microwave digestion method by atomic fluorescence spectrometry.

The precision statement of this test method was determined in an interlaboratory study and is valid for samples with an arsenic content between 0,35mg/kg and 3,57mg/kg. The test method can also be applied to samples with either a higher or lower arsenic content, however, no precision data has been determined at levels outside of this range.

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