An online method to determine chlorine stable isotope composition by continuous flow isotope ratio mass spectrometry (CF-IRMS) coupled with a Gasbench II

2013 ◽  
Vol 20 (1) ◽  
pp. 193-198 ◽  
Author(s):  
Yun-de Liu ◽  
Ai-guo Zhou ◽  
Yi-qun Gan ◽  
Cun-fu Liu ◽  
Ting-ting Yu ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Stable Isotope ◽  
Continuous Flow ◽  
Isotope Ratio ◽  
Isotope Composition ◽  
Isotope Ratio Mass Spectrometry ◽  
Stable Isotope Composition ◽  
Chlorine Stable Isotope

scholarly journals Microbial Isotopic Fractionation of Perchlorate Chlorine

2003 ◽  
Vol 69 (8) ◽  
pp. 4997-5000 ◽  
Author(s):  
Max L. Coleman ◽  
Magali Ader ◽  
Swades Chaudhuri ◽  
John D. Coates
Keyword(s):  
Stable Isotope ◽  
Environmental Samples ◽  
Microbial Respiration ◽  
Isotope Composition ◽  
Isotopic Fractionation ◽  
Stable Isotope Composition ◽  
Biotic Degradation ◽  
Chlorine Stable Isotope

ABSTRACT Perchlorate contamination can be microbially respired to innocuous chloride and thus can be treated effectively. However, monitoring a bioremediative strategy is often difficult due to the complexities of environmental samples. Here we demonstrate that microbial respiration of perchlorate results in a significant fractionation (∼−15‰) of the chlorine stable isotope composition of perchlorate. This can be used to quantify the extent of biotic degradation and to separate biotic from abiotic attenuation of this contaminant.

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