Vaughn Mangal PhD.

Patents

C. Guéguen , V. Mangal (2017). Methods and uses of dissolved organic material fractions for binding metal ions PCT/CA2017/050984. https://patents.google.com/patent/US10773978B2/en

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Guéguen, C., Winters, C., Lewis, A., Mangal V., Noble A. Methods and uses of Encapsulated Exudates and Dried Euglena biomass for Metal Binding. Package File Name: P51020PC00. International Application Number: CA2018050431. Filed: April 6th, 2018. https://patents.google.com/patent/US20200140289A1/en 

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​​Published Research 

V. Mangal., T. Q.Nguyen Q. Fiering, C. Guéguen. (2020). An untargeted metabolomic approach for the putative characterization of metabolites from Scenedesmus obliquus in response to cadmium stress. Environmental Pollution. 266(115123):1-10.

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Mangal V., Phung T., Guéguen C. (2020).An estimation of reactive sulfur concentrations released by three algae (Chlorella vulgaris, Chlamydomonas reinhardtii, Scenedesmus obliquus) in response to variable growth photoperiods. 27:12491–12498.

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V. Mangal., S. Degasparro, D.V. Beresford, C. Guéguen. (2020). Linking Molecular and Optical Properties of Dissolved Organic Matter Across a Soil-Water Interface on Akimiski Island (Nunavut, Canada). Science of the Total Environment. 704(135415):1-11.

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V. Mangal., T. Phung, T.Q. Nguyen, C. Guéguen. (2019). Molecular characterization of mercury binding ligands released by freshwater algae grown at three photoperiods. Frontiers in Environmental Science. 6(155):1-11.

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V. Mangal., B. R. Stenzler., A.J. Poulain., C. Guéguen. (2018). Aerobic and anaerobic bacterial mercury uptake is driven by algal organic matter composition and molecular weight. Environmental Science and Technology. 53(1):157-165.

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V. Mangal. Y.X. Shi., C. Guéguen. (2017). Compositional Changes and molecular transformations of dissolved organic matter during the arctic spring floods in the lower Churchill watershed (Northern Manitoba, Canada). Biogeochemistry. DOI: 10.1007/s10533-017-0388-8.

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V. Mangal, Y.X. Shi, Y. Zhu , C. Guéguen (2016). Assessing cadmium and vanadium accumulation using Diffusive Gradient in Thin-Films (DGT) and phytoplankton in the Churchill River Estuary system (Manitoba). Chemosphere , 163, 90-98.
 

Y.X. Shi, V. Mangal, C. Guéguen (2016). Influence of dissolved organic matter on dissolved vanadium speciation in the Churchill River estuary (Manitoba, Canada). Chemosphere, 154, 367-374.

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V. Mangal, C. Guéguen , N.J. Stock (2016). Molecular characterization of phytoplankton dissolved organic matter (DOM) and sulfur components using high resolution Orbitrap mass spectrometry. Analytical and Bioanalytical Chemistry DOI: 10.1007/s00216-015-9295-9

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V. Mangal , C. Guéguen (2015). Examining concentrations and molecular weights of thiols in microorganism cultures and in Churchill River (Manitoba) using a fluorescent-labeling method coupled to asymmetrical flow field-flow fractionation. Analytical and Bioanalytical Chemistry 407, 4305-4313, DOI: 10.1007/s00216-015-8599-0 

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Conference Oral Presentations

Guéguen, C., Mangal V., Nguyen, T. Identification of iron and dissolved organic matter complexes from the Arctic Ocean using Fourier transform ion cyclotron resonance mass spectrometry. 101st Canadian Chemistry Conference (CSC), Edmonton, Canada. May 27th-31st, 2018. Presented by: Celine Guéguen.

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Guéguen, C., Nguyen, T., Mangal V. The response of freshwater phytoplankton to metal-induced oxidative stress. 101st Canadian Chemistry Conference (CSC), Edmonton, Canada. May 27th-31st, 2018. Presented by: Celine Guéguen.

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Mangal, V., Shi, Y., X., Guéguen, C. Dissolved Organic Matter in Subarctic Environments: Revealing changes along the Churchill River and Surrounding Wetlands. ArcticNet, Quebec City, Canada. December 11th-15th, 2017.

 

Guéguen, C., Mangal, V., Nguyen, T. Metal speciation in natural waters using high resolution mass spectrometry. ICASS, Quebec City, Canada. June 19th-23rd, . Presented by: Celine Guéguen.

 

Guéguen C., Mangal, V. . Influence of composition on metal organic interactions and mercury bioavailability. SpectrAtom, Quebec City, Canada. June 19th-23rd, . Presented by: Celine Guéguen.

 

Mangal, V., Stenzler, B., Poulain, A., Guéguen, C. Influence of Phytoplankton Dissolved Organic Matter on Mercury Bioavailability. 100th Annual International Canadian Chemistry Conference (CSC), Toronto ON, Canada. May 28th-June 1st, 2017. Presented by: Vaughn Mangal. *Awarded best graduate student presentation in Environmental Division.

 

Nguyen, T., Mangal, V., Guéguen, C. Identification of Organic Ligands in Dissolved Organic Matter Produced by Scenedesmus obliquus using Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. 100th Annual International Canadian Chemistry Conference (CSC), Toronto ON, Canada. May 28th-June 1st, . Presented by: Thien Nguyen.

 

Guéguen, C., Shi, Y., X., Mangal, V. . Evaluation of passive samplers for the speciation of trace metals in Arctic Environments. Spectr’Atom Pau, France May 24thth-27th, Presented by Celine Guéguen.

 

Mangal, V., Stenzler, B., Poulain, A., Guéguen, C. Utilizing Asymmetrical Flow Field Flow Fractionation and High Resolution Mass Spectrometry to Assess the Role of Dissolved Organic Matter Size and Composition on Mercury Bioavailability. The 18th International Symposium on Field and Flow Based Separations, Dresden, DE, Germany, May 22nd-26th, 2016. Presented by: Vaughn Mangal.

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Mangal, V. Stenzler, B., Poulain, A., Guéguen, C. The role of DOM Molecular Weight Influencing Hg Bioavailability. Gananoque Environmental Science and Engineering Conference, Gananoque ON, Canada, January 29th-31st, 2016. Presented by: Vaughn Mangal.

 

Mangal, V., Stenzler, B., Poulain, A., Guéguen, C. Determining the role of DOM molecular weight and composition influencing mercury bioavailability. Biology Seminar Series Institutional Oral Presentation, Trent University, Peterborough, November 18th, 2015. Presented by: Vaughn Mangal.

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Mangal, V., Guéguen, C. Examining concentrations and molecular weights of thiols in microorganism cultures and in Churchill River (Manitoba) using a fluorescent-labeling method coupled to asymmetrical flow field-flow fractionation. The 17th International Symposium on Field and Flow based Separations, Salt Lake City, UT, USA, October 12th-16th, 2014. Presented by: Vaughn Mangal.

 

 

 

Conference Poster Presentations

Mangal, V., Phung, T., Guéguen, C. Identification of Phytoplankton Dissolved Organic Matter Complexes using High Resolution Mass Spectrometry. Gananoque Environmental Science and Engineering Conference, Gananoque ON, Canada, February 3rd-5th, 2017. Poster Presentation by Vaughn Mangal.

 

Mangal, V., Guéguen, C. Detection of Mercury-Dissolved Organic Matter Complexes using High Resolution Mass Spectrometry. International Mass Spectrometry Conference.  Toronto ON, Canada, August 21st-26th, 2016. Presented by: Vaughn Mangal

 

Guéguen, C., Mangal, V. ., Shi, Y.X. Molecular characterization of dissolved organic matter during the Arctic spring melt period. , New Orleans, LA, USA, February 21-26, . Oral platform by CG. *Also presented as poster by Vaughn Mangal at Trent Northern Studies Colloquium in Peterborough, ON, Canada, March .

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Guéguen C., Mangal, V., Islam S. Evaluating changes in the molecular structures of photoirradiated aquatic dissolved organic matter using ultra high resolution mass spectrometry. International Mass Spectrometry Conference.Toronto ON, Canada, August 21st-26th, . Presented by: Celine Guéguen

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Awards and Scholarships

NSERC Post Doctoral Fellowship ($ 45 000)

Weston Garfield Doctoral Award for Northern Research ($50 000)

Natural Sciences Engineering Research Council (NSERC; $42 000)
Ontario Graduate Scholarship (OGS; $15 000)
French American Scholarship ($2 500)
Northern Scientific Training Program ($ 2 000)

Dean's PhD Scholarship ($8 000)

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