Abstract
By this time, environmental problems had been put firmly on the political agenda. A great deal of research is still being carried out on environmental analysis, for example endocrine disrupting chemicals. The steel industry is a large scale material manufacturer. To this end the Japanese steel industry has established to the construction of the society of environmental harmonization. It is necessary to know the actual state of environmental pollution for the protection of environmental circumstances. Techniques of environmental analysis and environmental measurement equipments are developed in the period of 1970's in Japan. It is well known the Japanese environmental analysis is the most advanced in the world. The steel industry applied these techniques to the determination of nitrogen oxide, chemical oxygen demand and so on in the waste water and exhaust gases. In future the steel industry should be done continuously on the environmental analysis for the harmonization to the earth circumstances.
