National Action Plan for Addressing Dioxins in Australia

National Dioxins Program – National Action Plan for addressing dioxins in Australia6. WHAT MEASURES DO OTHER COUNTRIES HAVE FOR DIOXINS?Some countries have implemented standards or levels for dioxins in air, water, soil and other areasincluding daily human exposure (tolerable daily intake) and levels in food. Examples of the range ofguidelines are shown in Table 3 while further information on the range of measures in some countriesis provided in Appendix 1.AirFor emissions from combustion facilities, many countries have adopted the level of0.1 ng TEQ/m 3 recommended by the World Health Organization (WHO). However, some countries,such as Canada, have set different levels for different industry sectors whether they are new orexisting. The USA has a level of 0.2 ng/m 3 and Japan has limits between 0.1 and 5 ng TEQ/m 3 .SoilsThere are no common international guidelines for dioxins in soils. Where countries have establishedguidelines the levels vary according to the land use. Levels in agricultural and residential areas tendto be lower than levels for industrial areas.Water and sedimentsAs dioxins are insoluble in water they are very difficult to analyse. Accordingly, very few countrieshave set guidelines for dioxins in water. However, some countries have set levels for dioxins insediments with different levels for marine and freshwater.BiotaFew countries have established guidelines for dioxins in biota. Canada has set levels for mammalsand birds.FoodsThere are no common international guidelines for dioxins in foods. The EU has developed standardsin EU Regulation (EC) No. 2375/2001 but these only refer to dioxins and furans and do not includedioxin-like PCBs. It is expected that in the future, a new EU standard will encompass dioxin-likePCBs.Human body burdenA number of countries have established human exposure standards for dioxins, generally referred to astolerable daily or weekly intakes. Current or proposed tolerable daily intakes (TDIs) range from 1 pgTCDD/kg bw (the Netherlands and Germany), through 4 pg/kg bw (Japan), 5 pg TCDD/kg bw(Sweden, Norway, Finland and Denmark), to 10 pg TCDD or TEQs/kg bw (UK and Canada).35