Abstract
The basic organic compouds in the marine sediment of industrial area were analyzed to research organic compounds in aqueous environment. The sediments were extracted with benzene by using a continuous extractor for 12 hr. Hydrochloric acid solution (1N) was added to the benzene extracts, and the mixture was shaken for 5 min. The acid layer separated from the benzene layer was made alkaline by the addition of sodium hydroxide. The alkaline aqueous solution was extracted with diethyl ether. Then the ether extracts were dehydrated with anhydrous sodium sulfate and were concentrated with a Kuderna Danish evaporator. The concentrates were separated and analyzed by gas chromatographic mass spectrometry and its high resolution mass spectrometry. By this method many nitrogen-containing polycyclic aromatic hydrocarbons such as quinoline, acridine, aza-fluorene, and their. N-oxides were found.
