Comparison of infrared and mass-spectrometric measurements of carbon-13/carbon-12 ratios

1985 ◽  
Vol 36 (12) ◽  
pp. 997-999 ◽  
Author(s):  
William W. Wong
Keyword(s):  
Mass Spectrometric ◽  
Spectrometric Measurements

Investigation of an Alleged Nuclear Incident at Greenham Common Airbase Using TI-mass Spectrometric Measurements of Uranium Isotopes

2000 ◽  
Vol 34 (21) ◽  
pp. 4496-4503 ◽  
Author(s):  
Ian W. Croudace ◽  
Phillip E. Warwick ◽  
Rex N. Taylor ◽  
Andrew B. Cundy
Keyword(s):  
Mass Spectrometric ◽  
Uranium Isotopes ◽  
Spectrometric Measurements

Mass spectrometric measurements of SF6chemical releases from sounding rockets

1987 ◽  
Vol 92 (A8) ◽  
pp. 8827 ◽  
Author(s):  
D. E. Hunton ◽  
A. A. Viggiano ◽  
W. Swider ◽  
John F. Paulson ◽  
C. Sherman
Keyword(s):  
Mass Spectrometric ◽  
Sounding Rockets ◽  
Spectrometric Measurements

scholarly journals DNA adducts: Formation, biological effects, and new biospecimens for mass spectrometric measurements in humans

2018 ◽  
Vol 39 (1-2) ◽  
pp. 55-82 ◽  
Author(s):  
Byeong Hwa Yun ◽  
Jingshu Guo ◽  
Medjda Bellamri ◽  
Robert J. Turesky
Keyword(s):  
Dna Adducts ◽  
Biological Effects ◽  
Mass Spectrometric ◽  
Spectrometric Measurements

Optimized procedures for diagnostic testing for pheochromocytoma and paraganglioma in patients on hemodialysis 

2021 ◽  
Author(s):  
Christina Pamporaki ◽  
Aleksander Prejbisz ◽  
Robert Małecki ◽  
Frank Pistrosch ◽  
Mirko Peitzsch ◽  
...  
Keyword(s):  
Venous Blood ◽  
Diagnostic Testing ◽  
Reference Intervals ◽  
Mass Spectrometric ◽  
Specific Reference ◽  
Optimal Sampling ◽  
Optimal Conditions ◽  
Sampling Conditions ◽  
Spectrometric Measurements ◽  
Plasma Metanephrines

Abstract Background Diagnosis of pheochromocytomas and paragangliomas in patients receiving hemodialysis is troublesome. Aim To establish optimal conditions for blood sampling for mass spectrometric measurements of normetanephrine, metanephrine and 3-methoxytyramine in patients on hemodialysis and specific reference intervals for plasma metanephrines under the most optimal sampling conditions. Methods Blood was sampled before and near the end of dialysis, including different sampling sites in 170 patients on hemodialysis. Results Plasma normetanephrine concentrations were lower (P < 0.0001) and metanephrine concentrations higher (P < 0.0001) in shunt than in venous blood, with no differences for 3-methyxytyramine. Normetanephrine, metanephrine and 3-methoxytyramine concentrations in shunt and venous blood were lower (P < 0.0001) near the end than before hemodialysis. Upper cut-offs for normetanephrine were 34% lower when the blood was drawn from the shunt and near the end of hemodialysis compared to blood drawn before hemodialysis. Conclusion This study establishes optimal sampling conditions using blood from the dialysis shunt near the end of hemodialysis with optimal reference intervals for plasma metanephrines for the diagnosis of pheochromocytomas/paragangliomas among patients on hemodialysis.

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