1.1 ,This test method covers the determination of total sulfur in liquid petroleum products in concentrations from 0.01 ,% to 0.4 ,% by mass ,(Note 1). A special sulfate analysis procedure is described in Annex A1 that permits the determination of sulfur in concentrations as low as 5 ,mg/kg.
Note 1: ,The comparable lamp method for the determination of sulfur in liquefied petroleum gas is described in Test Method D2784. For the determination of sulfur in heavier petroleum products that cannot be burned in a lamp, see the high pressure decomposition device method (Test Method D129) the quartz tube method (IP 63), or the high-temperature method (Test Method D1552).