Hg稳定同位素地球化学研究进展
Progress in the Study of Stable Hg Isotope Geochemistry
查看参考文献70篇
|
文摘
|
近年来汞(Hg)稳定同位素研究进展显著。Hg具有七种稳定同位素。以往研究不但报道了Hg同位素质量分馏,也报道了Hg同位素非质量分馏,使Hg成为目前唯一在自然界中具有同位素非质量分馏的重金属元素。本文阐述了Hg同位素的研究背景,总结了Hg同位素分析方法和引起Hg同位素分馏的生物化学过程,介绍了地球各圈层样品中Hg同位素组成的国内外最新研究现状。而最新发现的大气降雨中异常的、呈季节性变化的偶数Hg同位素非质量分馏(?~(200)Hg),更开辟了Hg同位素研究的新领域。不同于奇数Hg同位素非质量分馏,偶数Hg同位素非质量分馏还未经任何实验验证,其分馏机理也完全不清楚,亟待深入研究。Hg可能的“三维”同位素体系(质量分馏、奇数以及偶数Hg同位素非质量分馏)的研究和应用将有希望为进一步认识Hg环境过程、生物累积、大尺度迁移以及全球性的生物地球化学循环提供更加丰富的信息,具有重要的科学意义。 |
|
其他语种文摘
|
During recent decades, remarkable progress has been made in the study of Hg stable isotope geochemistry. Previous studies have reported both mass-dependent fractionation (MDF) and mass-independent fractionation (MIF) of Hg isotopes, especially MIF of odd Hg isotopes. Up to now, Hg is thus the only metal element that displays significant MIF of isotopes in the nature. This paper introduced the background of Hg isotope studies, and gave a summary of Hg isotope analysis methods (preconcentration and isotope measurement), processes of Hg isotope fractionating and the isotopic compositions of Hg in different reservoirs on the Earth. Moreover, recent studies also have reported significant MIF of even Hg isotopes in precipitation. Neither laboratory experiment nor fieldwork has identified the mechanisms and processes inducing MIF of even Hg isotopes. Further study is thus needed to verify this observation and to get the best understanding of the mechanisms. The possible "threedimension" of the Hg isotope system may provide new insight into all aspects of global bio-geochemical Hg cycle. |
|
来源
|
地球与环境
,2012,40(4):599-610 【核心库】
|
|
关键词
|
Hg稳定同位素
;
质量分馏
;
奇数同位素非质量分馏
;
偶数同位素非质量分馏
;
环境地球化学
|
|
地址
|
中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550002
|
|
语种
|
中文 |
|
ISSN
|
1672-9250 |
|
学科
|
地质学 |
|
基金
|
中国科学院“百人计划”项目
;
加拿大安大略省博士后奖学金
|
|
文献收藏号
|
CSCD:4728805
|
参考文献 共
70
共4页
|
|
1.
Selin N E. Global biogeochemical cycling of mercury: A review.
Annual Review of Environment and Resources,2009,34:43-63
|
CSCD被引
56
次
|
|
|
|
|
2.
Schroeder W H. Atmospheric mercury-an overview.
Atmospheric Environment,1998,32(5):809-822
|
CSCD被引
148
次
|
|
|
|
|
3.
Gratz L E. isotopic composition and fractionation of mercury in great lakes precipitation and ambient air.
Environmental Science Technology,2010,44(20):7761-7770
|
CSCD被引
21
次
|
|
|
|
|
4.
Mason R P. The biogeochemical cycling of elemental mercury: Anthropogenic influences.
Geochimica et Cosmochimica Acta,1994,58(15):3191-3198
|
CSCD被引
62
次
|
|
|
|
|
5.
Lamborg C H. Modern and historic atmospheric mercury fluxes in both hemispheres: Global and regional mercury cycling implications.
Global Biogeochemical Cycles,2002,16(4):1104
|
CSCD被引
5
次
|
|
|
|
|
6.
Lindberg S E. Air/surface exchange of mercury vapor over forests-the need for a reassessment of continental biogenic emissions.
Atmospheric Environment,1998,32(5):895-908
|
CSCD被引
20
次
|
|
|
|
|
7.
Pacyna E G. Global anthropogenic mercury emission inventory for 2000.
Atmospheric Environment,2006,40(22):4048-4063
|
CSCD被引
68
次
|
|
|
|
|
8.
Sherman L S. Investigation of local mercury deposition from a coal-fired power plant using mercury isotopes.
Environmental Science & Technology,2011,46:382-390
|
CSCD被引
15
次
|
|
|
|
|
9.
De Laeter J R. Atomic weights of the elements: Review 2000.
Pure Appl. Chem,2003,75(6):683-800
|
CSCD被引
22
次
|
|
|
|
|
10.
Evans R D. Measurement of high precision isotope ratios for mercury from coals using transient signals.
J. Anal. At. Spectrom,2001,16(9):1064-1069
|
CSCD被引
3
次
|
|
|
|
|
11.
Lauretta D S. Mercury abundances and isotopic compositions in the murchison (cm) and allende (cv) carbonaceous chondrites.
Geochimica et Cosmochimica Acta,2001,65(16):2807-2818
|
CSCD被引
13
次
|
|
|
|
|
12.
Ghosh S. Mass-independent fractionation of mercury isotopes in the environment.
Geo-chem. Geophys. Geosyst,2008,9(3):Q03004
|
CSCD被引
6
次
|
|
|
|
|
13.
Jackson T A. Historical variations in the stable isotope composition of mercury in arctic lake sediments.
Environmental Science Technology,2004,38(10):2813-2821
|
CSCD被引
6
次
|
|
|
|
|
14.
Ridtey W I. A review of isotopic composition as an indicator of the natural and anthropogenic behavior of mercury.
Applied Geochemistry,2006,21(11):1889-1899
|
CSCD被引
3
次
|
|
|
|
|
15.
Kritee K. Mercury stable isotope fractionation during reduction of Hg (ii) to Hg (0) by mercury resistant microorganisms.
Environmental Science & Technology,2007,41(6):1889-1895
|
CSCD被引
14
次
|
|
|
|
|
16.
Blum J D. Reporting of variations in the natural isotopic composition of mercury.
Analytical and Bioanalytical Chemistry,2007,388(2):353-359
|
CSCD被引
31
次
|
|
|
|
|
17.
Bergquist B A. Mass-dependent and-independent fractionation of Hg isotopes by photoreduction in aquatic. systems.
Science,2007,318(5849):417
|
CSCD被引
49
次
|
|
|
|
|
18.
Chen J B. Unusual fractionation of both odd and even mercury isotopes in precipitation from Peterborough, on.,Canada.
Geochimica et Cosmochimica Acta,2012
|
CSCD被引
1
次
|
|
|
|
|
19.
Bergquist B A. The odds and evens of mercury isotopes: Applications of mass-dependent and mass-independent isotope fractionation.
Elements,2009,5(6):353
|
CSCD被引
18
次
|
|
|
|
|
20.
Feng X. Tracing mercury contamination sources in sediments using mercury isotope compositions.
Environmental Science & Technology,2010,44(9):3363-3368
|
CSCD被引
5
次
|
|
|
|
|
了解气象卫星更多信息，请访问