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WANG Dan-ni,JIN Lan-lan,CHEN Bin,XIE Xian-jun,HU Sheng-hong.A Review of the Isotope System of Cadmium and Its Applications in Geosciences and Environmental Sciences[J].Rock and Mineral Analysis,2013,32(2):181-191
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A Review of the Isotope System of Cadmium and Its Applications in Geosciences and Environmental Sciences
Received:July 23, 2012  Revised:November 05, 2012
DOI:
Key words: cadmium  isotope  geosciences  environmental sciences
Author NameAffiliationE-mail
WANG Dan-ni State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China  
JIN Lan-lan State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China  
CHEN Bin China National Environmental Monitoring Centre, Beijing 100012, China  
XIE Xian-jun State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China  
HU Sheng-hong State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China shhu@cug.edu.cn 
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Abstract:
      Cadmium is a typical chalcophile element which occurs in various sulfide deposits. In the environmental system, cadmium as the nutritional requirement is utilized for the growth of microorganisms, and its cycle is greatly affected by the biological process. Several recent publications have shown that mass differences between Cd isotopes result in isotopic fractionation during the evaporation/condensation processes, biological and inorganic processes. These results demonstrate that Cd isotopes can be used as a tracer in geosciences and environmental sciences. The Multiple Collector-Inductively Coupled Plasma-Mass Spectrometry (MC-ICP-MS) has successfully been used for high-precision measurements of cadmium isotopic compositions in the geological samples, which makes a rapid advance in the geochemical research of the cadmium isotope. In this paper, based on current publications, a review of the cadmium isotopic system is provided in detail, with emphasis on the geochemical behaviour of cadmium and its isotope fractionation mechanism, the distribution characteristics in the natural reservoirs, analytical technique and the applications in the geosciences and environmental sciences. The geochemical research of the cadmium isotope is just in its infancy; conducting an investigation into the cadmium isotope fractionation mechanism, the distribution characteristics in natural reservoirs and a unified cadmium isotope standard calibration system could promote the application of the cadmium isotope in geosciences and environmental sciences.