Abstract
Domestic emissions from incinerated garbage, sewage sludge and oil and coal combustion were estimated in addition to the emission data of PRTR. Then, countermeasures of reducing nickel emission from ferronickel refining plants, iron and steel manufactures and power generation plants were assumed as scenarios in addition to the existing voluntary measures, and the cost-effective analysis of those scenarios were conducted. As a result, nickel smelting, oil and coal combustion were the main sources of nickel emission into the air, and the cost-effectiveness of the measures in ferronickel smelting plants was the highest in the areas with high concentration in the air.
