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Geoff Koehler
Geoff Koehler
Environment Canada
Correu electrònic verificat a usask.ca - Pàgina d'inici
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Re‐evaluation of the hydrogen stable isotopic composition of keratin calibration standards for wildlife and forensic science applications
DX Soto, G Koehler, LI Wassenaar, KA Hobson
Rapid Communications in Mass Spectrometry 31 (14), 1193-1203, 2017
1032017
An on-line technique for the determination of the δ18O and δ17O of gaseous and dissolved oxygen
LI Wassenaar, G Koehler
Analytical chemistry 71 (21), 4965-4968, 1999
951999
Spatio-temporal variation of nitrate sources to Lake Winnipeg using N and O isotope (δ15N, δ18O) analyses
DX Soto, G Koehler, LI Wassenaar, KA Hobson
Science of the Total Environment 647, 486-493, 2019
682019
On the use of stable oxygen isotope (δ18O) measurements for tracking avian movements in North America
KA Hobson, G Koehler
Ecology and Evolution 5 (3), 799-806, 2015
602015
An automated technique for measuring δD and δ18O values of porewater by direct CO2 and H2 equilibration
G Koehler, LI Wassenaar, MJ Hendry
Analytical chemistry 72 (22), 5659-5664, 2000
522000
On-line technique for the determination of the δ37Cl of inorganic and total organic Cl in environmental samples
LI Wassenaar, G Koehler
Analytical chemistry 76 (21), 6384-6388, 2004
502004
The stable isotopic composition (37Cl/35Cl) of dissolved chloride in rainwater
G Koehler, LI Wassenaar
Applied geochemistry 25 (1), 91-96, 2010
402010
Aquatic community metabolism response to municipal effluent inputs in rivers quantified using diel δ18O values of dissolved oxygen
LI Wassenaar, JJ Venkiteswaran, SL Schiff, G Koehler
Canadian Journal of Fisheries and Aquatic Sciences 67 (8), 1232-1246, 2010
372010
Measurement of the hydrogen and oxygen isotopic compositions of concentrated chloride brines and brines from fluid inclusions in halite
GD Koehler, D Chipley, TK Kyser
Chemical Geology: Isotope Geoscience section 94 (1), 45-54, 1991
361991
On the urgent need for standardization in isotope‐based ecohydrological investigations
C Millar, K Janzen, MF Nehemy, G Koehler, P Hervé‐Fernández, H Wang, ...
Hydrological Processes 36 (10), e14698, 2022
272022
Realtime Stable Isotope Monitoring of Natural Waters by Parallel-Flow Laser Spectroscopy
G Koehler, LI Wassenaar
Analytical Chemistry, 2011
262011
Geographical assignment of polar bears using multi-element isoscapes
G Koehler, KJ Kardynal, KA Hobson
Scientific Reports 9 (1), 9390, 2019
252019
Paleomagnetic and isotopic evidence for the diagenesis and alteration of evaporites in the Paleozoic Elk Point Basin, Saskatchewan, Canada
G Koehler, TK Kyser, R Enkin, E Irving
Canadian Journal of Earth Sciences 34 (12), 1619-1629, 1997
251997
Combining Denitrifying Bacteria and Laser Spectroscopy for Isotopic Analyses (δ15N, δ18O) of Dissolved Nitrate
DX Soto, G Koehler, KA Hobson
Analytical chemistry 87 (14), 7000-7005, 2015
232015
Content, composition, and transfer of polyunsaturated fatty acids in an Arctic lake food web
G Grosbois, M Power, M Evans, G Koehler, M Rautio
Ecosphere 13 (1), e03881, 2022
212022
Expanding the Isotopic Toolbox to Track Monarch Butterfly (Danaus plexippus) Origins and Migration: On the Utility of Stable Oxygen Isotope (δ18O) Measurements
KA Hobson, KJ Kardynal, G Koehler
Frontiers in Ecology and Evolution 7, 224, 2019
202019
Phosphorus dynamics and availability in the nearshore of Eastern Lake Erie: insights from oxygen isotope ratios of phosphate
DC Depew, G Koehler, V Hiriart-Baer
Frontiers in Marine Science 5, 215, 2018
202018
Measurement of stable isotope activities in saline aqueous solutions using optical spectroscopy methods
G Koehler, LI Wassenaar, J Hendry
Isotopes in environmental and health studies 49 (3), 378-386, 2013
192013
Organic contamination detection for isotopic analysis of water by laser spectroscopy
C Millar, K Janzen, MF Nehemy, G Koehler, P Hervé‐Fernández, ...
Rapid Communications in Mass Spectrometry 35 (15), e9118, 2021
172021
Determination of the hydrogen isotopic compositions of organic materials and hydrous minerals using thermal combustion laser spectroscopy
G Koehler, LI Wassenaar
Analytical chemistry 84 (8), 3640-3645, 2012
162012
En aquests moments el sistema no pot dur a terme l'operació. Torneu-ho a provar més tard.
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