Measurement of sulfur isotope composition (δ34S) by multiple-collector thermal ionization mass spectrometry using a33S-36S double spike

2005 ◽  
Vol 19 (23) ◽  
pp. 3429-3441 ◽  
Author(s):  
Jacqueline L. Mann ◽  
W. Robert Kelly
Keyword(s):  
Mass Spectrometry ◽  
Thermal Ionization Mass Spectrometry ◽  
Sulfur Isotope ◽  
Isotope Composition ◽  
Thermal Ionization ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Sulfur Isotope Composition ◽  
Thermal Ionization Mass

scholarly journals Separation and Analysis of Boron Isotope in High Plant by Thermal Ionization Mass Spectrometry

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Qingcai Xu ◽  
Yuliang Dong ◽  
Huayu Zhu ◽  
Aide Sun
Keyword(s):  
Mass Spectrometry ◽  
Thermal Ionization Mass Spectrometry ◽  
Isotope Composition ◽  
Exchange Chromatography ◽  
Thermal Ionization ◽  
Ionization Mass Spectrometry ◽  
Boron Isotope ◽  
Plant Sample ◽  
Ionization Mass ◽  
Thermal Ionization Mass

Knowledge of boron and its isotope in plants is useful to better understand the transposition and translocation of boron within plant, the geochemical behavior in the interface between soil and plant, and the biogeochemical cycle of boron. It is critical to develop a useful method to separate boron from the plant for the geochemical application of boron and its isotope. A method was developed for the extraction of boron in plant sample, whose isotope was determined by thermal ionization mass spectrometry. The results indicated that this method of dry ashing coupled with two-step ion-exchange chromatography is powerful for the separation of boron in plant sample with large amounts of organic matters completely. The ratios of boron isotope composition in those plant tissue samples ranged from-19.45‰to+28.13‰(total range:47.58‰) with a mean value of2.61±11.76‰SD. The stem and root isotopic compositions were lower than those in flower and leaf. The molecular mechanism of boron isotope may be responsible for the observed variation of boron isotopic composition and are considered as a useful tool for the better understanding of boron cycling process in the environment and for the signature of living systems.

Molybdenum isotopic analysis by negative thermal ionization mass spectrometry (N-TIMS): effects on oxygen isotopic composition

2016 ◽  
Vol 31 (4) ◽  
pp. 948-960 ◽  
Author(s):  
Yuichiro Nagai ◽  
Tetsuya Yokoyama
Keyword(s):  
Mass Spectrometry ◽  
Thermal Ionization Mass Spectrometry ◽  
Isotope Composition ◽  
Isotope Analysis ◽  
Isotopic Analysis ◽  
Thermal Ionization ◽  
Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
O Isotope ◽  
Thermal Ionization Mass

We developed a new, highly precise, and accurate Mo isotope analysis by thermal ionization mass spectrometry in negative ionization mode (N-TIMS) by determining the in situ O isotope composition for each measurement and using the data to correct for the O isotope interferences.

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