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The number of industrially produced chemical substances is estimated to be in the tens of thousands. Chemical substances have become indispensable in our daily lives, but they may also affect human health and the ecosystem, depending on the method employed for their production, use and disposal. Indeed, dioxins, PCBs, endocrine disruptors and other substances have caused serious social problems.
The Ministry of the Environment (MOE), Government of Japan, has been conducting successive investigations on the persistence of chemical substances in the general environment since 1974 and has published the results in “Chemicals in the Environment.” The results of environmental surveys of FY2003 are compiled in “Chemicals in the Environment (FY2004).” We hope that those concerned with this issue will utilize this report and that the information provided will be helpful for the environmental preservation of this country.
As a method for selecting target substances, the following three types of surveys, each with their own purpose, were introduced so that the survey results could be effectively utilized for measures against chemical substances in the environment.
To avoid duplication, the results of chemical substances (dioxins, etc.) that have been monitored by other divisions of MOE are not included in this report (see below).
Environmental Investigation by Other Divisions of MOE (as of September-2005)
| Name of Investigation | Media | Target Chemical Substances |
| Monitoring Investigation of Hazardous Air Pollution Substances | Air | Benzene, Aldehydes, Mercury and its compounds, Benzo[a]pyrene, etc. (19 species) |
| Water Quality Monitoring | Surface water, Ground water | Cadmium, Total Cyanogen, etc. |
| Environmental Investigation on Agrochemicals | Soil, Agricultural products, Air, Suface water | Pesticides |
| Monitoring of the Precautionary Monitoring Targets | Surface water, Ground water | Chloroform, trans-1,2-Dichloroethylene, etc. |
| Priority Substances for the Survey on Method and Monitoring | Water environment | Zinc, etc. |
| Investigation of Dioxins | Air, Surface water, Bottom sediment, Soil, Wildlife | PCDDs, PCDFs, Coplanar-PCBs, PBDDs, PBDFs |
FY2005 Report / FY2004 Report / FY2003 Report / FY2002 Report / FY2001 Report / FY1998 Report / FY1996 Report