Heike Geilmann

Variations in chemical and physical properties of Amazon forest soils in relation to their genesis

C. A. Quesada, Jon Lloyd, Michael P. Schwarz et al. · Biogeosciences · 2010 · 522 citations · Full text

Agriculture, Earth Sciences, Soil Sciences +17

Continuous flow ² H/ ¹ H and ¹⁸ O/ ¹⁶ O analysis of water samples with dual inlet precision

Matthias Gehre, Heike Geilmann, Jürgen Richter et al. · Rapid Communications in Mass Spectrometry · 2004 · 271 citations

Pharmacy, Chemistry, Analytical Chemistry +13

Two new organic reference materials for <i>δ</i> ¹³ C and <i>δ</i> ¹⁵ N measurements and a new value for the <i>δ</i> ¹³ C of NBS 22 oil

Haiping Qi, Tyler B. Coplen, Heike Geilmann et al. · Rapid Communications in Mass Spectrometry · 2003 · 254 citations

Natural Sciences, Biochemistry, Chemistry +13

Comprehensive inter‐laboratory calibration of reference materials for <i>δ</i> ¹⁸ O versus VSMOW using various on‐line high‐temperature conversion techniques

Willi A. Brand, Tyler B. Coplen, A.T.M. Aerts et al. · Rapid Communications in Mass Spectrometry · 2009 · 189 citations

Natural Sciences, Chemistry, Analytical Chemistry +15

Organic Reference Materials for Hydrogen, Carbon, and Nitrogen Stable Isotope-Ratio Measurements: Caffeines, <i>n</i>-Alkanes, Fatty Acid Methyl Esters, Glycines, <scp>l</scp>-Valines, Polyethylenes, and Oils

Arndt Schimmelmann, Haiping Qi, Tyler B. Coplen et al. · Analytical Chemistry · 2016 · 187 citations · Full text

Natural Sciences, Biochemistry, Chemistry +14