煤炭及其灰渣中的有机汞

Organic mercury in coal and its cinder

采用8mol/L HCl浸提,巯基棉分离法测定了煤炭及其灰渣中的有机汞并探讨了它在燃烧过程中的迁移.15个省、市、自治区煤炭中有机汞含量的平均值为0.037mg/kg,占煤中总汞的18.8%.燃煤飞灰中有机汞平均值达0.045 mg/kg,占总汞28.1%.煤炭中的有机汞在燃烧过程中部分迁移到灰渣中,并明显富集,存在着排入大气的可能性.

：8mol/L HCl was used to extract the organic mercury from coals and its cinder with sulfhydryl cotton to separate it from inorganic mercury; and the transport of organic mercury during coal combustion was probed. The average content of organic mercury in coals collected from 15 provinces and cities, was 0.037 mg/kg, occupying 18.8% of the total mercury in coal. The average content of organic mercury in fly ashes of burning coals was 0.045 mg/kg, occupying 28.1% of the mercury. Most part of the organic mercury during the process of combustion removed to the under and accumulated obviously; meanwhile, it might be emitted into atmosphere possibly.