OCCURRENCE AND DETERMINATION OF DINITROTOLUENE ISOMERS IN SEA-WATER

The occurrence and determination of three dinitrotoluene isomers. 2.6-, 2.4- and 2.3-dinitrotoluene in the sea-water of Dokai bay in Japan, and their behaviour in surrounding sea environment were investigated. 206-0.890 μgl-1 of 2.4-dinitrotoluene. 14.8-0.072 μgl-1 of 2.6-dinitrotoluene and 0.412-0.081 μgl-1 of 2.3-dinitrotoluene were detected in sea-water heavily polluted by industrial waste. After the industrial waste containing three dinitrotoluene isomers was discharged into the bay, a distance of 1.5 km had to be traversed by the water before the concentration of 2.4-dinitrotoluene was reduced by the action of tidal current to one half of its initial concentration in the bay. Three dinitrotoluene isomers were extracted with benzene and identified by a gas-chromatography-mass spectrometry-computer technique and gas-chromatography with an electron capture detector. © 1979.