生态环境学报2017，Vol.26Issue(9)：1627-1638,12.DOI:10.16258/j.cnki.1674-5906.2017.09.024
汞同位素自然库存研究进展
Progresses in Study of Hg Isotope Database
摘要
Abstract
As the basis of accurate tracing back mercury pollution sources, the mercury isotope natural database and its complement is still the focus in the mercury isotope research field. Mercury has 7 stable isotopes, which are both mass-dependent fractionation (MDF) and mass-independent fractionation (MIF), making it an ideal way to trace mercury sources and mercury migration and transformation processes. The study of Hg isotope database has achieved significant progress by using the multiple collector inductively coupled plasma-mass spectrometry (MC-ICP-MS) to accurately test mercury isotopes. The summaries are as follows: the database of natural sample Hg isotope is initially established. The composition of mercury Isotopes varies with the change of samples and environments. It has a preliminary understanding of isotope fractionation mechanism. And mercury isotopes have been successfully used to track sources and geochemical pathways of Hg in the environment. Fractionation characteristics have been mastered in some natural processes, especially the typical process of MDF and MIF (photo-reduction, adsorption), which has been used to determine the geochemical transformation of mercury. The migration and transformation of the coal fire surface mercury is complex because partial mercury on the surface may come up secondary release. This fractionation process of mercury isotope has no doubt made it difficult to trace the pollution source by isotope studies. So mercury isotope geochemistry characteristics in the coal fire area may be a new direction in the mercury isotope research field.关键词
汞同位素/分馏效应/自然库存/地球化学示踪Key words
mercury isotopes/fractionation effect/mercury isotope database/geochemical tracer分类
天文与地球科学引用本文复制引用
李春辉,汪婷,梁汉东,施云云,曹庆一..汞同位素自然库存研究进展[J].生态环境学报,2017,26(9):1627-1638,12.基金项目
国家自然科学基金项目(41371449). （41371449）
