7ASTM D5453--2012 Standard test method for deter- mination of total sulfur in light hydrocarbons, motor fuels and oils by ultraviolet fluorescence[S].
8ASTM D6667--2010 Standard test method for deter- mination of total volatile sulfur in gaseous hydrocar- bons and liquefied petroleum gases by ultraviolet fluo rescence[S].
9ASTM D5623--2004 Standard test method for sulfur compounds in light petroleum liquids by gas chroma tography and sulfur selective detection[S].