research

Mercury isotope fractionation during the processes of a seawater desulfurization coal-fired power plant and isotopic tracing of mercury pollution in surrounding atmospheric

Abstract

汞是一种全球性的有毒重金属元素,由于形态多变,其生物地球化学循环过程十分复杂。大气中的汞主要来自于人类活动,燃煤是最主要的汞排放源。目前,海水脱硫工艺广泛应用于我国沿海地区的燃煤电厂中。与其他脱硫工艺不同,配备海水脱硫系统燃煤电厂的汞排放除了通过烟气排入大气外,还包括不可忽略的脱硫海水中的汞向大气的迁移扩散。因此,研究配备海水脱硫系统的燃煤电厂的汞排放特征对周边大气的影响,具有十分重要的意义。 本研究以厦门市一座配备有典型海水脱硫系统的燃煤电厂(SY电厂)的周边大气环境作为研究区域,以汞稳定同位素为技术手段,调查煤中汞在燃烧、排放及扩散过程中的汞同位素分馏,评估SY电厂汞排放对周边大气环境的...Mercury is a toxic heavy metal, with a complicated biogeochemical cycle due to its various species. Mercury emissions to the atmosphere come mainly from anthropogenic activities, and among them, coal combustion is considered to be the dominant contributor. Seawater flue gas desulfurization (SFGD) system has been widely adopted in coal-fired power plants (CFPPs) of China coastal region. Defferent f...学位:理学博士院系专业:环境与生态学院_环境科学学号:3332013015390

    Similar works