Professor Russell D. Frew, Our people, Department of Chemistry, University of Otago, New Zealand

russell_frew PhD BSc(Hons) (Otago)

Tel: 03 479 7913
Location: Science II 3n12
Email: rfrew@chemistry.otago.ac.nz

Main research interests

Trace metals in natural waters
Stable isotope geochemistry
Paleo-chemistry
Geochemical provenancing

Current research projects

Determining the geographical origin of food and other commodities of interest:
The geochemical composition of a natural product provides a inherent signature that can be related to its point of origin. We are currently working on developing robust tools encompassing analyses (light isotopes, trace metals and heavy isotopes), databasing and statistical interpretation. Projects on whole foods (e.g. honey, coffee, edible oils) are on-going and attention is now on deciphering the signal within complex mixtures.

Nitrogen in the oceans, fate and fluxes:
Nitrogen compounds i the ocean play an important role in sustaining primary productivity and some are implicated as potential climate modifiers. However the the controls of the rates and pathways of the cycling of nitrogen from the relatively inert N₂(g) through the essential nutrients NO₃ and NH₄, amino acids and various gaseous oxides is not well understood. The potential of climate change underlines the importance of understanding the marine biogeochemistry of nitrogen. For example, the regions of nitrogen fixation will increase with global warming thereby enhancing the marine fixed nitrogen pool. On the other hand nitrous oxide is a significant greenhouse gas with a global warming potential 300 times that of CO₂ on a molecular basis. This project applies isotopic tools to unravel the complexities of the marine nitrogen systematics.

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Publications

Wakefield, J., McComb, K., Ehtesham, E., Van Hale, R., Barr, D., Hoogewerff, J., & Frew, R. (2019). Chemical profiling of saffron for authentication of origin. Food Control, 106, 106699. doi: 10.1016/j.foodcont.2019.06.025

Udy, J. A., O'Connell-Milne, S. A., Durante, L. M., McMullin, R. M., Kolodzey, S., & Frew, R. D. (2019). Regional differences in supply of organic matter from kelp forests drive trophodynamics of temperate reef fish. Marine Ecology Progress Series, 621, 19-32. doi: 10.3354/meps12974

Van Hale, R., Schofield, M., Connor, M., Barker, R., & Frew, R. (2019). Stable isotope measurements to differentiate sources of monofluoroacetate in a blackmail case. Rapid Communications in Mass Spectrometry. Advance online publication. doi: 10.1002/rcm.8416

Sabadel, A. J. M., Van Oostende, N., Ward, B. B., Woodward, E. M. S., Van Hale, R., & Frew, R. D. (2019). Characterization of particulate organic matter cycling during a summer North Atlantic phytoplankton bloom using amino acid C and N stable isotopes. Marine Chemistry. Advance online publication. doi: 10.1016/j.marchem.2019.103670

Udy, J., Wing, S., O'Connell-Milne, S., Kolodzey, S., McMullin, R., Durante, L., & Frew, R. (2019). Organic matter derived from kelp supports a large proportion of biomass in temperate rocky reef fish communities: Implications for ecosystem-based management. Aquatic Conservation. Advance online publication. doi: 10.1002/aqc.3101

Chapter in Book - Research
Journal - Research Article

Chapter in Book - Research

McComb, K., & Frew, R. (2013). Using new analytical approaches to verify the origin of honey. In P. Brereton (Ed.), New analytical approaches for verifying the origin of food. (pp. 216-242). Cambridge, UK: Woodhead. doi: 10.1533/9780857097590.3.216

Sander, S. G., Hunter, K., & Frew, R. (2009). Sampling and measurements of trace metals in seawater. In O. Wurl (Ed.), Practical guidelines for the analysis of seawater. (pp. 305-327). Boca Raton, FL: CRC Press.

North, J. C., & Frew, R. D. (2007). Isotopic characterisation of leachate from seven New Zealand landfills. In E. C. Lehmann (Ed.), Landfill research focus. (pp. 199-261). New York: Nova Science.

Heywood, K. J., Locarnini, R. A., Frew, R. D., King, B. A., & Dennis, P. (1998). Transport and water masses of the Antarctic slope front system in the eastern Weddell sea. In S. Jacobs & R. Weiss (Eds.), Ocean, Ice and Atmosphere: Interactions at the Antartic Continential Margin. (pp. 203-214). AGU Antarctic Research Series.

Dennis, P. J., Heywood, K. J., & Frew, R. D. (1997). Oxygen Isotope Studies. In R. T. Pollard & D. Smythe-Wright (Eds.), Understanding Ocean Circulation. (pp. 31-32). UK: WOCE.

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Journal - Research Article

Gorman, A. R., Vennell, R., Holbrook, W. S., & Frew, R. (2018). Seismic characterization of oceanic water masses, water mass boundaries and mesoscale eddies SE of New Zealand. Journal of Geophysical Research: Oceans, 123(2), 1519-1532. doi: 10.1002/2017JC013459

Babaranti, O., Horn, S., Jowett, T., & Frew, R. (2018). Isotopic signatures in Mytilus galloprovincialis and Ulva latuca as bioindicators for assessing discharged sewage effluent in coastal waters along Otago Peninsula, New Zealand. Geology, Ecology, & Landscapes. Advance online publication. doi: 10.1080/24749508.2018.1485079

Rajapaksha, D., Waduge, V., Padilla‐Alvarez, R., Kalpage, M., Rathnayake, R. M. N. P., Migliori, A., Frew, R., … Amarakoon, T. (2017). XRF to support food traceability studies: Classification of Sri Lankan tea based on their region of origin. X-Ray Spectrometry, 46(4), 220-224. doi: 10.1002/xrs.2748

Wing, S. R., Gault-Ringold, M., Stirling, C. H., Wing, L. C., Shatova, O. A., & Frew, R. D. (2017). δ⁵⁶Fe in seabird guano reveals extensive recycling of iron in the Southern Ocean ecosystem. Limnology & Oceanography, 62(4), 1671-1681. doi: 10.1002/lno.10524

Li, Q., Zhao, Y., Zhu, D., Pang, X., Liu, Y., Frew, R., & Chen, G. (2017). Lipidomics profiling of goat milk, soymilk and bovine milk by UPLC-Q-Exactive Orbitrap Mass Spectrometry. Food Chemistry, 224, 302-309. doi: 10.1016/j.foodchem.2016.12.083

Sabadel, A. J. M., Browning, T. J., Kruimer, D., Airs, R. L., Woodward, E. M. S., Van Hale, R., & Frew, R. D. (2017). Determination of picomolar dissolved free amino acids along a South Atlantic transect using reversed-phase high-performance liquid chromatography. Marine Chemistry, 196, 173-180. doi: 10.1016/j.marchem.2017.09.008

Li, Q., Yu, Z., Zhu, D., Meng, X., Pang, X., Liu, Y., Frew, R., … Chen, G. (2017). The application of NMR-based milk metabolite analysis in milk authenticity identification. Journal of the Science of Food & Agriculture, 97(9), 2875-2882. doi: 10.1002/jsfa.8118

Li, Q., Meng, X., Zhu, D., Pang, X., Wang, K., Frew, R., & Chen, G. (2016). Determination of nonprotein nitrogen components of milk by nuclear magnetic resonance. Analytical Letters, 49(18), 2953-2963. doi: 10.1080/00032719.2016.1164180

Sabadel, A. J. M., Woodward, E. M. S., Van Hale, R., & Frew, R. D. (2016). Compound-specific isotope analysis of amino-acids: A tool to unravel complex symbiotic trophic relationships. Food Webs, 6, 9-18. doi: 10.1016/j.fooweb.2015.12.003

Nielsen, J. A., Frew, R. D., Whigham, P. A., Callaway, R. M., & Dickinson, K. J. M. (2016). Thyme travels: ¹⁵N isoscapes of Thymus vulgaris L. invasion in lightly grazed pastoral communities. Austral Ecology, 41(1), 28-39. doi: 10.1111/aec.12284

Holder, P. W., Frew, R., & Van Hale, R. (2015). The geographic origin of an intercepted biosecurity pest beetle assigned using hydrogen stable isotopes. Journal of Economic Entomology, 108(2), 834-837. doi: 10.1093/jee/tou097

Muhammad, S. A., Frew, R. D., & Hayman, A. R. (2015). Compound-specific isotope analysis of diesel fuels in a forensic investigation. Frontiers in Chemistry, 3, 12. doi: 10.3389/fchem.2015.00012

Nielsen, J. A., Whigham, P. A., Frew, R. D., Callaway, R. M., & Dickinson, K. J. M. (2015). Thyme and space invasion: Thymus vulgaris decreases exotic plant species diversity in Central Otago, New Zealand. Biological Invasions, 17(8), 2261-2274. doi: 10.1007/s10530-015-0872-9

Muhammad, S. A., Hayman, A. R., Van Hale, R., & Frew, R. D. (2015). Assessing carbon and hydrogen isotopic fractionation of diesel fuel n-alkanes during progressive evaporation. Journal of Forensic Sciences, 60(S1), S56-S65. doi: 10.1111/1556-4029.12551

Nielsen, J. A., Frew, R. D., Whigham, P. A., Callaway, R. M., & Dickinson, K. J. M. (2015). Germination and growth responses of co-occurring grass species to soil from under invasive Thymus vulgaris. Allelopathy, 35(1), 139-152.

Parr, E. B., Cotter, J. D., Frew, R. D., & Rehrer, N. J. (2015). Muscle glycogen dominates females fuel usage in moderately intensive endurance exercise even in the cold. Annals of Sports Medicine & Research, 2(3), 1021.

Jandrić, Z., Haughey, S. A., Frew, R. D., McComb, K., Galvin-King, P., Elliott, C. T., & Cannavan, A. (2015). Discrimination of honey of different floral origins by a combination of various chemical parameters. Food Chemistry, 189, 52-59. doi: 10.1016/j.foodchem.2014.11.165

Sander, S. G., Tian, F., Ibisanmi, E. B., Currie, K. I., Hunter, K. A., & Frew, R. D. (2015). Spatial and seasonal variation of the iron speciation in surface waters of the Subantarctic front and the Otago Continental Shelf. Marine Chemistry, 173, 114-124. doi: 10.1016/j.marchem.2014.09.001

Ehtesham, E., Hayman, A., Van Hale, R., & Frew, R. (2015). Influence of feed and water on the stable isotopic composition of dairy milk. International Dairy Journal, 47, 37-45. doi: 10.1016/j.idairyj.2015.02.008

Wing, S. R., Jack, L., Shatova, O., Leichter, J. J., Barr, D., Frew, R. D., & Gault-Ringold, M. (2014). Seabirds and marine mammals redistribute bioavailable iron in the Southern Ocean. Marine Ecology Progress Series, 510, 1-13. doi: 10.3354/meps10923

Nielsen, J. A., Frew, R. D., Whigham, P. A., Callaway, R. M., & Dickinson, K. J. M. (2014). Thyme invasion and soil properties in the Central Otago region of New Zealand. Geoderma Regional, 1, 48-58. doi: 10.1016/j.geodrs.2014.08.002

Nielsen, J. A., Whigham, P. A., Frew, R. D., Callaway, R. M., & Dickinson, K. J. M. (2014). Invasion essentials: Does secondary chemistry plasticity contribute to the invasiveness of Thymus vulgaris L.? Chemoecology, 24(1), 15-27. doi: 10.1007/s00049-013-0142-1

Holder, P. W., Armstrong, K., Van Hale, R., Millet, M.-A., Frew, R., Clough, T. J., & Baker, J. A. (2014). Isotopes and trace elements as natal origin markers of Helicoverpa armigera: An experimental model for biosecurity pests. PLoS ONE, 9(3), e92384. doi: 10.1371/journal.pone.0092384

Benbow, T. J., Hayman, A. R., Van Hale, R., & Frew, R. (2013). Preparation of aqueous fatty acids for hydrogen and carbon stable isotope analysis by solid phase extraction. Marine & Freshwater Research, 64(4), 294-302. doi: 10.1071/MF12192

Ehtesham, E., Hayman, A. R., McComb, K. A., Van Hale, R., & Frew, R. D. (2013). Correlation of geographical location with the stable isotope values of hydrogen and carbon of fatty acids from New Zealand milk and bulk milk powder. Journal of Agricultural & Food Chemistry, 61(37), 8914-8923. doi: 10.1021/jf4024883

Frew, R., McComb, K., Croudis, L., Clark, D., & Van Hale, R. (2013). Modified sugar adulteration test applied to New Zealand honey. Food Chemistry, 141(4), 4127-4131. doi: 10.1016/j.foodchem.2013.06.124

Muhammad, S. A., Frew, R. D., & Hayman, A. R. (2013). Forensic differentiation of diesel fuels using hydrocarbon isotope fingerprints. Central European Geology, 56(1), 19-37. doi: 10.1556/CEuGeol.56.2013.1.3

McLeod, R. J., Garland, M., Van Hale, R., Steiman, S., & Frew, R. D. (2013). Determining the most effective combination of chemical parameters for differentiating the geographic origin of food products: An example using coffee beans. Journal of Food Chemistry & Nutrition, 1(2), 49-61.

Ehtesham, E., Baisden, W. T., Keller, E. D., Hayman, A. R., Van Hale, R., & Frew, R. D. (2013). Correlation between precipitation and geographical location of the δ²H values of the fatty acids in milk and bulk milk powder. Geochimica et Cosmochimica Acta, 111, 105-116. doi: 10.1016/j.gca.2012.10.026

McLeod, R. J., Hyndes, G. A., Hurd, C. L., & Frew, R. D. (2013). Unexpected shifts in fatty acid composition in response to diet in a common littoral amphipod. Marine Ecology Progress Series, 479, 1-12. doi: 10.3354/meps10327

Hepburn, C. D., Frew, R. D., & Hurd, C. L. (2012). Uptake and transport of nitrogen derived from sessile epifauna in the giant kelp Macrocystis pyrifera. Aquatic Biology, 14(2), 121-128. doi: 10.3354/ab00382

Wing, S. R., McLeod, R. J., Leichter, J. J., Frew, R. D., & Lamare, M. D. (2012). Sea ice microbial production supports Ross Sea benthic communities: Influence of a small but stable subsidy. Ecology, 93(2), 314-323. doi: 10.1890/11-0996.1

Strzepek, R. F., Hunter, K. A., Frew, R. D., Harrison, P. J., & Boyd, P. W. (2012). Iron-light interactions differ in Southern Ocean phytoplankton. Limnology & Oceanography, 57(4), 1182-1200. doi: 10.4319/lo.2012.57.4.1182

Fitzsimons, S., Mager, S., Frew, R., Clifford, A., & Wilson, G. (2012). Formation of ice-shelf moraines by accretion of sea water and marine sediment at the southern margin of the McMurdo Ice Shelf, Antarctica. Annals of Glaciology, 53(60), 211-220. doi: 10.3189/2012AoG60A155

Gault-Ringold, M., Adu, T., Stirling, C. H., Frew, R. D., & Hunter, K. A. (2012). Anomalous biogeochemical behavior of cadmium in subantarctic surface waters: Mechanistic constraints from cadmium isotopes. Earth & Planetary Science Letters, 341–344, 94-103. doi: 10.1016/j.epsl.2012.06.005

Fukuda, K., Thomas, D. B., Frew, R. D., & Fordyce, R. E. (2012). Antarctic glaciation recorded in Early Miocene New Zealand foraminifera. Marine Micropaleontology, 92–93, 52-60. doi: 10.1016/j.marmicro.2012.05.002

Smith, I. J., Langhorne, P. J., Frew, R. D., Vennell, R., & Haskell, T. G. (2012). Sea ice growth rates near ice shelves. Cold Regions Science & Technology, 83-84, 57-70. doi: 10.1016/j.coldregions.2012.06.005

Stokes, M. D., Leichter, J. J., Wing, S., & Frew, R. (2011). Temperature variability and algal isotopic heterogeneity on a Floridian coral reef. Marine Ecology, 32(3), 364-379. doi: 10.1111/j.1439-0485.2011.00469.x

Leonard, G. H., Langhorne, P. J., Williams, M. J. M., Vennell, R., Purdie, C. R., Dempsey, D. E., … Frew, R. D. (2011). Evolution of supercooling under coastal Antarctic sea ice during winter. Antarctic Science, 23(4), 399-409. doi: 10.1017/s0954102011000265

Thomas, D. B., McGoverin, C. M., Fordyce, R. E., Frew, R. D., & Gordon, K. C. (2011). Raman spectroscopy of fossil bioapatite: A proxy for diagenetic alteration of the oxygen isotope composition. Palaeogeography, Palaeoclimatology, Palaeoecology, 310, 62-70. doi: 10.1016/j.palaeo.2011.06.016

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