摘要
汞是国际上公认的重金属污染物,自有人类生产活动以来,向自然界中排放了大量的汞,分析不同历史时期汞的变化,对于了解人类发展阶段的环境变化具有重要的意义。汞同位素分析作为一种环境示踪手段,能提供准确的定量信息,有助于了解独立而复杂的汞地球化学循环。因此,通过研究汞同位素组成可以分析、示踪沉积物中汞污染来源及其生物地球化学过程。本文结合近年相关研究成果,针对汞同位素分馏特征、湖沼相沉积物中汞同位素组成示踪环境变化进行了综述。
Mercury, as a heavy metal pollutant internationally recognized, is one of persistent and global metallic pollutants with highly active geochemical properties. Since there were human production activities, a large number of mercury had been discharged into the nature. It is meaningful to analyze the changes of mercury in different historical periods for understanding the environmental changes at the stage of human development. For mercury isotopes, as a tracer, provide accurate quantitative information and better understand the geochemical cycles of independent and complex mercury. Therefore, to study the mercury isotopic composition can be analyzed and traced the sources of mercury pollution and biogeochemical processes in sediments. Combined with recent researches, this paper illustrated mercury isotope fractionation and how the mercury isotopic composition traces environment changes with lacustrine sediments.
出处
《热带地貌》
2017年第1期77-86,共10页
Tropical Geomorphology
关键词
湖沼沉积物
汞同位素
示踪
环境变化
Lacustrine Sediments
mercury isotope
tracer
environment changes
