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Haiping Qi

Haiping Qi is a Chemist with the USGS Reston Stable Isotope Laboratory.

B.S (Chemical Engineering), Tianjin University of Science and Technology, Tianjin, China. 1978 - 1982.

Research Chemist, Institute of Salt Lakes, Chinese Academy of Science, Qinghai, China. 1982 - 1993.

Visiting Scholar, Institute for Reference Material and Measurements (IRMM), Joint Research Center of European Commission,  Geel, Belgium. 1993 - 1994 and 1995 - 1996.

Visiting Scholar, Reston Stable Isotope laboratory, USGS, VA. 1996 - 1998.

Isotope Laboratory assistant manager, Reston Stable Isotope laboratory, USGS, VA. 1998 - present

Science and Products

Filter Total Items: 23

Optimization of on-line hydrogen stable isotope ratio measurements of halogen- and sulfur-bearing organic compounds using elemental analyzer–chromium/high-temperature conversion isotope ratio mass spectrometry (EA-Cr/HTC-IRMS)

Rationale: Accurate hydrogen isotopic analysis of halogen- and sulfur-bearing organics has not been possible with traditional high-temperature conversion (HTC) because the formation of hydrogen-bearing reaction products other than molecular hydrogen (H2) is responsible for non-quantitative H2 yields and possible hydrogen isotopic fractionation. Our previously introduced, new chromium-based EA-Cr/H
Authors
Matthias Gehre, Julian Renpenning, Heike Geilmann, Haiping Qi, Tyler B. Coplen, Steffen Kümmel, Natalija Ivdra, Willi A. Brand, Arndt Schimmelmann
By
Water Resources Mission Area

Antarctic ice-core water (USGS49) – A new isotopic reference material for δ2H and δ18O measurements of water

As a result of the scarcity of isotopic reference waters for daily use, a new secondary isotopic reference material for international distribution has been prepared from ice-core water from the Amundsen–Scott South Pole Station. This isotopic reference material, designated as USGS49, was filtered, homogenised, loaded into glass ampoules, sealed with a torch, autoclaved to eliminate biological acti
Authors
Jennifer M. Lorenz, Haiping Qi, Tyler B. Coplen
By
Water Resources Mission Area

New organic reference materials for hydrogen, carbon, and nitrogen stable isotope-ratio measurements: caffeines, n-alkanes, fatty acid methyl esters, glycines, L-valines, polyethylenes, and oils

An international project developed, quality-tested, and determined isotope−δ values of 19 new organic reference materials (RMs) for hydrogen, carbon, and nitrogen stable isotope-ratio measurements, in addition to analyzing pre-existing RMs NBS 22 (oil), IAEA-CH-7 (polyethylene foil), and IAEA-600 (caffeine). These new RMs enable users to normalize measurements of samples to isotope−δ scales. The R
Authors
Arndt Schimmelmann, Haiping Qi, Tyler B. Coplen, Willi A. Brand, Jon Fong, Wolfram Meier-Augenstein, Helen F. Kemp, Blaza Toman, Annika Ackermann, Sergey Assonov, Anita Aerts-Bijma, Ramona Brejcha, Yoshito Chikaraishi, Tamim Darwish, Martin Elsner, Matthias Gehre, Heike Geilmann, Manfred Gröning, Jean-François Hélie, Sara Herrero-Martín, Harro A.J. Meijer, Peter E. Sauer, Alex L. Sessions, Roland A. Werner
By
Water Resources Mission Area, Reston Stable Isotope Laboratory (RSIL)

Three whole-wood isotopic reference materials, USGS54, USGS55, and USGS56, for δ2H, δ13C, δ15N, and δ18O measurements

Comparative measurements of stable hydrogen and oxygen isotopes in wood are hampered by the lack of proper reference materials (RMs). The U.S. Geological Survey (USGS) has prepared three powdered, whole-wood RMs, USGS54 (Pinus contorta, Canadian lodgepole pine), USGS55 (Cordia cf. dodecandra, Mexican ziricote), and USGS56 (Berchemia cf. zeyheri, South African red ivorywood). The stable isotopes of
Authors
Haiping Qi, Tyler B. Coplen, James A. Jordan
By
Water Resources Mission Area

A revision in hydrogen isotopic composition of USGS42 and USGS43 human-hair stable isotopic reference materials for forensic science

The hydrogen isotopic composition (δ2HVSMOW-SLAP) of USGS42 and USGS43 human hair stable isotopic reference materials, normalized to the VSMOW (Vienna-Standard Mean Ocean Water)–SLAP (Standard Light Antarctic Precipitation) scale, was originally determined with a high temperature conversion technique using an elemental analyzer (TC/EA) with a glassy carbon tube and glassy carbon filling and analys
Authors
Tyler B. Coplen, Haiping Qi
By
Water Resources Mission Area

A new organic reference material, L-glutamic acid, USGS41a, for δ13C and δ15N measurements − a replacement for USGS41

RationaleThe widely used l-glutamic acid isotopic reference material USGS41, enriched in both 13C and 15N, is nearly exhausted. A new material, USGS41a, has been prepared as a replacement for USGS41.MethodsUSGS41a was prepared by dissolving analytical grade l-glutamic acid enriched in 13C and 15N together with l-glutamic acid of normal isotopic composition. The δ13C and δ15N values of USGS41a were
Authors
Haiping Qi, Tyler B. Coplen, Stanley J. Mroczkowski, Willi A. Brand, Lauren Brandes, Heike Geilmann, Arndt Schimmelmann
By
Water Resources Mission Area, Reston Stable Isotope Laboratory (RSIL)

A new isotopic reference material for stable hydrogen and oxygen isotope-ratio measurements of water—USGS50 Lake Kyoga Water

Rationale As a result of the need for isotopic reference waters having high δ2HVSMOW-SLAP and δ18OVSMOW-SLAP values for daily use, especially for tropical and equatorial-zone freshwaters, a new secondary isotopic reference material for international distribution was prepared from water collected from Lake Kyoga, Uganda. Methods This isotopic reference lakewater was filtered through a membrane with
Authors
Tyler B. Coplen, Leonard I Wassenaar, Christine Mukwaya, Haiping Qi, Jennifer M. Lorenz
By
Water Resources Mission Area

Isotopic disproportionation during hydrogen isotopic analysis of nitrogen-bearing organic compounds

Rationale High-precision hydrogen isotope ratio analysis of nitrogen-bearing organic materials using high-temperature conversion (HTC) techniques has proven troublesome in the past. Formation of reaction products other than molecular hydrogen (H2) has been suspected as a possible cause of incomplete H2 yield and hydrogen isotopic fractionation. Methods The classical HTC reactor setup and a m
Authors
Sreejesh Nair, Heike Geilmann, Tyler B. Coplen, Haiping Qi, Matthias Gehre, Arndt Schimmelmann, Willi A. Brand
By
Water Resources Mission Area

On-line hydrogen-isotope measurements of organic samples using elemental chromium: An extension for high temperature elemental-analyzer techniques

The high temperature conversion (HTC) technique using an elemental analyzer with a glassy carbon tube and filling (temperature conversion/elemental analysis, TC/EA) is a widely used method for hydrogen isotopic analysis of water and many solid and liquid organic samples with analysis by isotope-ratio mass spectrometry (IRMS). However, the TC/EA IRMS method may produce inaccurate δ2H results, with
Authors
Matthias Gehre, Julian Renpenning, Tetyana Gilevska, Haiping Qi, Tyler B. Coplen, Harro A.J. Meijer, Willi A. Brand, Arndt Schimmelmann
By
Water Resources Mission Area

USGS46 Greenland ice core water – A new isotopic reference material for δ2H and δ18O measurements of water

Ice core from Greenland was melted, filtered, homogenised, loaded into glass ampoules, sealed, autoclaved to eliminate biological activity, and calibrated by dual-inlet isotope-ratio mass spectrometry. This isotopic reference material (RM), USGS46, is intended as one of two secondary isotopic reference waters for daily normalisation of stable hydrogen (δ2H) and stable oxygen (δ18O) isotopic analys
Authors
Tyler B. Coplen, Haiping Qi, Lauren V. Tarbox, Jennifer M. Lorenz, Bryan Buck
By
Water Resources Mission Area

Biscayne aquifer drinking water (USGS45): a new isotopic reference material for δ2H and δ18O measurements of water

RATIONALE As a result of the scarcity of isotopic reference waters for daily use, a new secondary isotopic reference material for international distribution has been prepared from drinking water collected from the Biscayne aquifer in Ft. Lauderdale, Florida. METHODS This isotopic reference water was filtered, homogenized, loaded into glass ampoules, sealed with a torch, autoclaved to elimina
Authors
Jennifer M. Lorenz, Lauren V. Tarbox, Bryan Buck, Haiping Qi, Tyler B. Coplen
By
Water Resources Mission Area

Caution on the use of NBS 30 biotite for hydrogen-isotope measurements with on-line high-temperature conversion systems

RATIONALEThe supply of NBS 30 biotite is nearly exhausted. During measurements of NBS 30 and potential replacements, reproducible δ2HVSMOW-SLAP values could not be obtained by three laboratories using high-temperature conversion (HTC) systems. The cause of this issue has been investigated using the silver-tube technique for hydrogen-isotope measurements of water.METHODSThe δ2HVSMOW-SLAP values of
Authors
Haiping Qi, Tyler B. Coplen, Gerard Olack, Torsten W. Vennemann
By
Water Resources Mission Area
Reston Stable Isotope Lab staff 1
Reston Stable Isotope Lab 1
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Reston Stable Isotope Lab staff 3

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