Search Results - "Townsend, Ashley T."

Critical evaluation of a seaFAST system for the analysis of trace metals in marine samples by Wuttig, Kathrin, Townsend, Ashley T., van der Merwe, Pier, Gault-Ringold, Melanie, Holmes, Thomas, Schallenberg, Christina, Latour, Pauline, Tonnard, Manon, Rijkenberg, Micha J.A., Lannuzel, Delphine, Bowie, Andrew R.

“…A seawater preconcentration system (seaFAST) with offline sector-field inductively coupled plasma mass spectrometry (SF-ICP-MS) detection was critically…”
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Pre-concentration of thorium and neodymium isotopes using Nobias chelating resin: Method development and application to chromatographic separation by Pérez-Tribouillier, Habacuc, Noble, Taryn L., Townsend, Ashley T., Bowie, Andrew R., Chase, Zanna

“…The isotopes of thorium (Th) and neodymium (Nd) are used as tracers in oceanography, and are key parameters in the international GEOTRACES program. The very…”
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Microbial life at −13 °C in the brine of an ice-sealed Antarctic lake by Murray, Alison E, Kenig, Fabien, Fritsen, Christian H, McKay, Christopher P, Cawley, Kaelin M, Edwards, Ross, Kuhn, Emanuele, McKnight, Diane M, Ostrom, Nathaniel E, Peng, Vivian, Ponce, Adrian, Priscu, John C, Samarkin, Vladimir, Townsend, Ashley T, Wagh, Protima, Young, Seth A, Yung, Pung To, Doran, Peter T

“…The permanent ice cover of Lake Vida (Antarctica) encapsulates an extreme cryogenic brine ecosystem (−13 °C; salinity, 200). This aphotic ecosystem is anoxic…”
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Biogeochemical iron budgets of the Southern Ocean south of Australia: Decoupling of iron and nutrient cycles in the subantarctic zone by the summertime supply by Bowie, Andrew R., Lannuzel, Delphine, Remenyi, Tomas A., Wagener, Thibaut, Lam, Phoebe J., Boyd, Philip W., Guieu, Cécile, Townsend, Ashley T., Trull, Thomas W.

“…Climate change is projected to significantly alter the delivery (stratification, boundary currents, aridification of landmasses, glacial melt) of iron to the…”
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Direct sector field ICP-MS determination of metal impurities in detonation nanodiamond by Mitev, Dimitar P., Townsend, Ashley T., Paull, Brett, Nesterenko, Pavel N.

“…A simple, rapid, sensitive and accurate method for the determination of metal impurities in detonation nanodiamond (DND), based upon the direct aspiration of…”
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The role of bacterial and algal exopolymeric substances in iron chemistry by Norman, Louiza, Worms, Isabelle A.M., Angles, Emilie, Bowie, Andrew R., Nichols, Carol Mancuso, Ninh Pham, A., Slaveykova, Vera I., Townsend, Ashley T., David Waite, T., Hassler, Christel S.

“…It is widely accepted that the complexation of iron (Fe) with organic compounds is the primary factor that regulates Fe reactivity and its bioavailability to…”
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Microwave-assisted purification of detonation nanodiamond by Mitev, Dimitar P., Townsend, Ashley T., Paull, Brett, Nesterenko, Pavel N.

“…In the present work microwave-assisted purification approaches for detonation nanodiamond (DND) are considered, and the resultant impurity content of purified…”
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Modern sampling and analytical methods for the determination of trace elements in marine particulate material using magnetic sector inductively coupled plasma–mass spectrometry by Bowie, Andrew R., Townsend, Ashley T., Lannuzel, Delphine, Remenyi, Tomas A., van der Merwe, Pier

“…Trace elements often limit phytoplankton growth in the ocean, and the quantification of particulate forms is essential to fully understand their biogeochemical…”
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Distribution of dissolved and particulate metals in Antarctic sea ice by Lannuzel, Delphine, Bowie, Andrew R., van der Merwe, Pier C., Townsend, Ashley T., Schoemann, Véronique

“…Samples were collected in East Antarctic sea ice in late winter/early austral spring 2007 to assess the distributions of Al, Cr, Mn, Cu, Zn, Mo, Cd and Ba…”
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High Lability Fe Particles Sourced From Glacial Erosion Can Meet Previously Unaccounted Biological Demand: Heard Island, Southern Ocean by van der Merwe, Pier, Wuttig, Kathrin, Holmes, Thomas, Trull, Thomas W., Chase, Zanna, Townsend, Ashley T., Goemann, Karsten, Bowie, Andrew R.

“…Iron (Fe) is an essential micronutrient that controls phytoplankton growth in the Southern Ocean. Dissolved Fe ( 0.4µm) is far more abundant and may also…”
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Assessing the extent, stability, purity and properties of silanised detonation nanodiamond by Duffy, Emer, Mitev, Dimitar P., Thickett, Stuart C., Townsend, Ashley T., Paull, Brett, Nesterenko, Pavel N.

“…•Hydrophobisation of detonation nanodiamonds is performed via surface silanisation.•The exact of concentration of protogenic functional groups is measured by…”
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Sustained Upwelling of Subsurface Iron Supplies Seasonally Persistent Phytoplankton Blooms Around the Southern Kerguelen Plateau, Southern Ocean by Schallenberg, Christina, Bestley, Sophie, Klocker, Andreas, Trull, Thomas W., Davies, Diana M., Gault‐Ringold, Melanie, Eriksen, Ruth, Roden, Nicholas P., Sander, Sylvia G., Sumner, Michael, Townsend, Ashley T., Merwe, Pier, Westwood, Karen, Wuttig, Kathrin, Bowie, Andrew

“…Although the supply of iron generally limits phytoplankton productivity in the Southern Ocean, substantial seasonal blooms are observed over and downstream of…”
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Quantifying Lithogenic Inputs to the Southern Ocean Using Long-Lived Thorium Isotopes by Pérez-Tribouillier, Habacuc, Noble, Taryn L., Townsend, Ashley T., Bowie, Andrew R., Chase, Zanna

“…Above the Kerguelen Plateau in the Southern Ocean, lithogenic inputs containing essential trace metals such as iron naturally fertilize surrounding waters,…”
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Improved methodology for the microwave digestion of carbonate-rich environmental samples by Durand, Axel, Chase, Zanna, Townsend, Ashley T., Noble, Taryn, Panietz, Emily, Goemann, Karsten

“…Microwave-assisted digestion permits a rapid and total dissolution of sediments and various other sample types, allowing easier and more accurate multi-element…”
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Mechanisms of arsenic attenuation in acid mine drainage from Mount Bischoff, western Tasmania by Gault, Andrew G., Cooke, David R., Townsend, Ashley T., Charnock, John M., Polya, David A.

“…There is a dearth of research concerning the geochemistry of arsenic in acid mine drainage (AMD) in western Tasmania. To help address this, the controls on the…”
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Inexpensive portable capillary electrophoresis instrument for Monitoring Zinc(II) in remote areas by Zhang, Min, Smejkal, Petr, Bester, Nicolaas, Robertson, Johnathon C., Atia, Mostafa A., Townsend, Ashley T., Guijt, Rosanne M., Breadmore, Michael C.

“…•Portable capillary electrophoresis instrument for field detection of heavy metals.•Size of 21 cm x 10 cm x 7 cm, powered from the USB port of a laptop…”
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Contamination of the marine environment by Antarctic research stations: Monitoring marine pollution at Casey station from 1997 to 2015 by Stark, Jonathan S, Johnstone, Glenn J, King, Catherine, Raymond, Tania, Rutter, Allison, Stark, Scott C, Townsend, Ashley T

“…The contamination of the marine environment surrounding coastal Antarctic research stations remains insufficiently understood in terms of its extent,…”
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Scalable 3D printing method for the manufacture of single-material fluidic devices with integrated filter for point of collection colourimetric analysis by Keshan Balavandy, Sepideh, Li, Feng, Macdonald, Niall P., Maya, Fernando, Townsend, Ashley T., Frederick, Kimberley, Guijt, Rosanne M., Breadmore, Michael C.

“…Assembly and bonding are major obstacles in manufacturing of functionally integrated fluidic devices. Here we demonstrate a single-material 3D printed device…”
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Circumpolar Deep Water and Shelf Sediments Support Late Summer Microbial Iron Remineralization by Smith, Abigail J. R., Ratnarajah, Lavenia, Holmes, Thomas M., Wuttig, Kathrin, Townsend, Ashley T., Westwood, Karen, Cox, Martin, Bell, Elanor, Nicol, Stephen, Lannuzel, Delphine

“…Despite widespread iron (Fe) limitation in the Southern Ocean, intense phytoplankton blooms are observed around productive coastal regions such as the Mertz…”
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Protein sources influence both apparent digestibility and gastrointestinal evacuation rate in juvenile slipper lobster (Thenus australiensis) by Wirtz, Andrea, Carter, Chris G., Codabaccus, M. Basseer, Fitzgibbon, Quinn P., Townsend, Ashley T., Smith, Gregory G.

“…Apparent digestibility and gastrointestinal evacuation rate were measured to assess the potential of five commercially available protein sources for their…”
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