sulfoxide in the column were reduced to 0 microgram meaning that virtually all the mercury was removed mercury concentrations was determined according to epa 101a method by absorbing in km n o 4 h 2 so 4 solution and atomic absorption cold vapor analysts the same procedure as in example 1 was repeated but instead of pure sulfoxide a mixture 35 ml sulfoxide 35 ml doucane high boiling point aliphatic hydrocarbon solvent was used mercury vapor concentration in air was 45 microgram before removal by column and 0 microgram after column removal so that here again all mercury was removed the same procedure as in example 1 was repeated but instead of pure sulfoxide liquid emulsion containing 70 ml sulfoxide 30 ml water was used mercury vapor concentration before column removal was 58 microgram and after column removal 0 microgram so that in this example as well all mercury was eliminated the same procedure as in example 3 was repeated but instead of air and mercury vapor a mixture of air with so 2 and mercury vapor 1 5 l mn air 1000 ppm so 4 58 microgram hg was used so 2 absorption was by the column was 90 hg concentration after column was 0 microgram so that here as well all hg was absorbed the same procedure as in example 4.