R. B. Thomas

Uranium and thorium isotopic and concentration measurements by magnetic sector inductively coupled plasma mass spectrometry

Chuan‐Chou Shen, R. Lawrence Edwards, Hai Cheng et al. · Chemical Geology · 2002 · 481 citations

Environmental Radiochemistry, Thorium Isotopic, Radioactive Contamination +6

Measurement of Attogram Quantities of²³¹Pa in Dissolved and Particulate Fractions of Seawater by Isotope Dilution Thermal Ionization Mass Spectroscopy

Chuan‐Chou Shen, Hai Cheng, R. Lawrence Edwards et al. · Analytical Chemistry · 2003 · 189 citations

Engineering, Marine Chemistry, Oceanography +16

Implementation of Guide to the expression of Uncertainty in Measurement (GUM) to multi-collector TIMS uranium isotope ratio metrology

Stefan Bürger, Richard M. Essex, K. J. Mathew et al. · International Journal of Mass Spectrometry · 2010 · 71 citations

Isotope Analysis, Precision Measurement, Engineering +9

Urinary Leukotriene E ₄ in Patients with Asthma: Effect of Airways Reactivity and Sodium Cromoglycate

Jay Y. Westcott, Hunter Smith, Sally E. Wenzel et al. · American Review of Respiratory Disease · 1991 · 62 citations

(231Pa/235U)-(230Th/238U) of young mafic volcanic rocks from Nicaragua and Costa Rica and the influence of flux melting on U-series systematics of arc lavas

R. B. Thomas, M. M. Hirschmann, Hai Cheng et al. · Geochimica et Cosmochimica Acta · 2002 · 59 citations

Arc Lavas, Magmatic Process, Volcanology +11