Variation in the isotopic composition of zinc in the natural environment and the use of zinc isotopes in biogeosciences: a review

被引：207

作者：

Cloquet, Christophe ^{[1
,2
]}

Carignan, Jean ^{[2
]}

Lehmann, Moritz F. ^{[3
]}

Vanhaecke, Frank ^{[1
]}

机构：

[1] Univ Ghent, Dept Analyt Chem, B-9000 Ghent, Belgium

[2] Ctr Rech Petrog & Geochim, CNRS, F-54501 Vandoeuvre Les Nancy, France

[3] Univ Quebec, GEOTOP UQAM McGill, Montreal, PQ H3C 3P8, Canada

来源：

ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2008年 / 390卷 / 02期

关键词：

Zn isotopes; isotopic variation; biogeosciences; source tracer; fractionation mechanisms;

D O I：

10.1007/s00216-007-1635-y

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Zinc (Zn) is a trace element that is, as a building block in various enzymes, of vital importance for all living organisms. Zn concentrations are widely determined in dietary, biological and environmental studies. Recent papers report on the first efforts to use stable Zn isotopes in environmental studies, and initial results point to significant Zn isotope fractionation during various biological and chemical processes, and thus highlight their potential as valuable biogeochemical tracers. In this article, we discuss the state-of-the-art analytical methods for isotopic analysis of Zn and the procedures used to obtain accurate Zn isotope ratio results. We then review recent applications of Zn isotope measurements in environmental and life sciences, emphasizing the mechanisms and causes responsible for observed natural variation in the isotopic composition of Zn. We first discuss the Zn isotope variability in extraterrestrial and geological samples. We then focus on biological processes inducing Zn isotope fractionation in plants, animals and humans, and we assess the potential of Zn isotope ratio determination for elucidating sources of atmospheric particles and contamination. Finally, we discuss possible impediments and limitations of the application of Zn isotopes in (geo-) environmental studies and provide an outlook regarding future directions of Zn isotope research.

引用

页码：451 / 463

页数：13

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