The Isotopic Ratio Measurement of Uranium in the Form of Hydrolyzed Uranium Hexafluoride by Inductively Coupled Plasma Multiple Collector Mass Spectrometry

2009 ◽  
pp. 20-20-6
Author(s):  
AJ Walder ◽  
T Hodgson
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Isotopic Ratio ◽  
Uranium Hexafluoride ◽  
Ratio Measurement ◽  
Inductively Coupled

scholarly journals tudy on the determination of ¹⁰B/¹¹B isotope ratio in water samples by isotope dilution – inductively coupled plasma mass spectrometry (ID-ICPMS)

2021 ◽  
Vol 7 (3) ◽  
pp. 8-16
Author(s):  
Kim Dung Nguyen Thi ◽  
Thi Lien Nguyen
Keyword(s):  
Mass Spectrometry ◽  
Isotope Dilution ◽  
Water Samples ◽  
Inductively Coupled Plasma ◽  
Isotope Ratio ◽  
Isotopic Ratio ◽  
Primary Coolant ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry

The determination of 10B/11B isotope ratio and boron concentration in various watersamples using isotope dilution technique with inductively coupled plasma mass spectrometry (ICPMS) was studied. The interferences on precision and accuracy in isotopic ratio determination by ICPMS such as memory effects, dead time, spectral overlap of 12C were investigated for the selection of optimum conditions. By the addition of certain amounts of enriched 10B into samples, the 10B/11B ratio was determined through ICP-MS signal of 10B and 11B. The detection limit for 10B and 11B was experimentally obtained as 0.26 µg/L and 0.92 µg/L, respectively. The ratios of 10B/11B in measured water samples varied in the ranged between 0.1905 and 0.2484 for different matrices. This method has been then applied for the determination of boron isotopic ratio in VVER-1000 reactor-type simulated primary coolant water and in some environmental water samples.

scholarly journals An Isotopic Study of Bio-accessible Lead in Wheat, Miswak Toothbrush and Miswak Fruit Using the Continuous On-line Leaching Method with Inductively Coupled Plasma Mass Spectrometry

2021 ◽  
Vol 42 (5) ◽  
Author(s):  
Randa A. Althobiti ◽  
Diane Beauchemin
Keyword(s):  
Mass Spectrometry ◽  
Confidence Level ◽  
Inductively Coupled Plasma ◽  
Isotopic Ratio ◽  
Artificial Saliva ◽  
Anthropogenic Sources ◽  
Isotopic Study ◽  
Inductively Coupled ◽  
On Line

In this study, sources of Pb are investigated using the 206Pb/207Pb isotopic ratio measured by inductively coupled plasma quadrupole mass spectrometry in the bio-accessible fractions from wheat, Miswak toothbrush (also used as chewing stick) and Miswak fruit. These samples were obtained for the in vitro batch and on-line leaching methods that mimic the human gastrointestinal tract by sequentially using artificial saliva, gastric juice and intestinal fluid for extraction. The two methods provided similar results according to a Student’s t-test at the 95% confidence level. Significant (p < 0.05) differences in 206Pb/207Pb were noted at the 95% confidence level in different artificial body fluids. Except for unpolluted Miswak toothbrush and Miswak fruit, which only contained geogenic Pb, the samples contained a mixture of geogenic and anthropogenic Pb, with bio-accessible Pb in saliva being mainly from a geogenic source, whereas bio-accessible Pb in the stomach and intestinal fluids was mainly from anthropogenic sources. Despite the fact that leaded petrol was phased out in Saudi Arabia in 2001, a Miswak toothbrush collected on the side of a busy road after exposure for only a few days and Safeer wheat were still being contaminated with Pb and had an isotopic composition matching that of Pb added to petrol. The 208Pb/206Pb isotopic ratio for gastric bio-accessible Pb also matched that reported in tetraethyllead. The 206Pb/207Pb isotopic ratios of intestinal bio-accessible Pb from Qassim wheat and Safeer wheat point to coal combustion as the source. Overall, these results highlight the need for continued Pb monitoring and the value of examining bio-accessible fractions periodically to identify Pb sources.

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