Flame Atomic Absorption Methods of Analysis of Oilfield Brines: Cadmium, Cesium, Chromium, Cobalt, Lead, Nickel, Rubidium, and Vanadium

摘要

Flame atomic absorption spectroscopy was used to determine cadmium, cesium, chromium, cobalt, lead, nickel, rubidium, and vanadium in oilfield brines and synthetic oilfield brines. Many of these elements can be harmful to the environment in only trace amounts. The method of standard addition, a deuterium (D sub 2 ) arc lamp, and sodium ion additions, were used to eliminate interferences. Single-operator precision and accuracy results were determined at the 1 mu g/ml analyte level for brines of different compositions. Also, precision and accuracy determinations were made at several levels of concentration for each element. Good (relative standard deviation