Lecturer In Physical Chemistry
Chemistry
University College Cork
College Rd
Cork

T: +353-21-490-2439
F: +353-21-427-4097
E: d.venables@ucc.ie
W: http://chemweb.ucc.ie/venablesgroup/

Dean Venables obtained his BSc and MSc degrees from Rhodes University (South Africa) and his PhD from Yale University (USA) in 2001 under Prof. Charles Schmuttenmaer.  His PhD research investigated the properties of liquid mixtures using the then novel technique of ultrafast terehertz spectroscopy to probe the rotational and librational band of water and other polar solvents. Following a short stint at the National Metrology Laboratory (South Africa) where he developed near-infrared frequency standards using external cavity diode lasers, he moved to Ireland in 2003 to atmospheric chemistry and instrument development in Ireland in 2003.  Since 2005, he has been a lecturer in the Department of Chemistry. where he continues to carry out research in atmospheric chemistry and instrument development for quantifying trace gases and characterising aerosols. This work involves a combination of field, chamber, and isntrument development work.  The Venables group have participated in numerous national and international campaigns in Ireland, Canada, the USA, Germany, and Spain.  This research has been funded by Science Foundation Ireland, the Environmental Protection Agency, and the EU FP7 programme to the tune of €1.4 million (mostly as sole principal investigator).  Dean Venables has over 700 citations of primary research findings and an h-index of 13 (Scopus).

Research Interests

My research interests centre on developing new spectroscopic approaches to detect trace gases, and then applying these tools to answer open questions in atmospheric chemistry. Of particular interest is the chemistry of the highly reactive radical species that drive much of the chemistry of the atmosphere, even when present at low parts-per-trillion levels. Such radicals include NO3, the dominant oxidant in the troposphere at night, as well as halogen oxide radicals, particularly BrO and IO, that are responsible for tropospheric ozone loss. Halogen-catalysed loss of ozone is most dramatically evident in the episodic depletion of tropospheric ozone during polar spring. The Venables' group is also investigating the release of iodine from seaweeds and its role in coastal particle formation.  Other projects are focussed on new methods to detect mercury in the atmosphere: new, more sensitive analytical tools are need to investigate the atmospheric speciation of mercury and understand how this important environmental pollutant is exchanged between the surface and the atmosphere.

Peer Reviewed Journals

YearPublication
(2014)'Molecular composition of biogenic secondary organic aerosols using ultrahigh resolution mass spectrometry: comparing laboratory and field studies'
I. Kourtchev, S. J. Fuller, C. Giorio, R. M. Healy, E. Wilson, I. P. O’Connor, J. C. Wenger, M. McLeod, J. Aalto, T. M. Ruuskanen, W. Maenhaut, R. L. Jones, D. S. Venables, J. R. Sodeau, M. Kulmala, and M. Kalberer (2014) 'Molecular composition of biogenic secondary organic aerosols using ultrahigh resolution mass spectrometry: comparing laboratory and field studies'. Atmospheric Chemistry and Physics, 13 :2155-2167 Globe icon [DOI] [Full Text] [Details]
(2013)'Light extinction by secondary organic aerosol: an intercomparison of three broadband cavity spectrometers'
Varma, R. M.; Ball, S. M.; Brauers, T.; Dorn, H. P.; Heitmann, U.; Jones, R. L.; Platt, U.; Pöhler, D.; Ruth, A. A.; Shillings, A. J. L.; Thieser, J.; Wahner, A.; Venables, D. S. (2013) 'Light extinction by secondary organic aerosol: an intercomparison of three broadband cavity spectrometers'. Atmospheric Measurement Techniques, 6 :3115-3130 Globe icon [DOI] [Full Text] [Details]
(2013)'Intercomparison of NO3 radical detection instruments in the atmosphere simulation chamber SAPHIR'
H.-P. Dorn, R.L. Apodaca, S.M. Ball, T. Brauers, S.S. Brown, J.N. Crowley, W.P. Dub´e, H. Fuchs, R. H¨aseler, U. Heitmann, R.L. Jones, A. Kiendler-Scharr, I. Labazan, J.M. Langridge, J. Meinen, T.F. Mentel, U. Platt, D. P¨ohler, F. Rohrer, A.A. Ruth, E. Schlosser, G. Schuster, A.J.L. Shillings, W.R. Simpson, J. Thieser, R. Tillmann, R. Varma, D. S. Venables, and A. Wahner (2013) 'Intercomparison of NO3 radical detection instruments in the atmosphere simulation chamber SAPHIR'. Atmospheric Measurement Techniques, 6 :1111-1140 Globe icon [DOI] [Full Text] [Details]
(2013)'The seaweeds Fucus vesiculosus and Ascophyllum nodosum are significant contributors to coastal iodine emissions'
R.-J. Huang, U.R. Thorenz, M. Kundel, D.S. Venables, D. Ceburnis, K.F. Ho, J. Chen, A. L. Vogel, F.C. K¨upper, P.P.A. Smyth, U. Nitschke, D.B. Stengel, H. Berresheim, C.D. O’Dowd, and T. Hoffmann (2013) 'The seaweeds Fucus vesiculosus and Ascophyllum nodosum are significant contributors to coastal iodine emissions'. Atmospheric Chemistry and Physics, 13 :5255-5264 Globe icon [DOI] [Full Text] [Details]
(2012)'Coastal Iodine Emissions. 1. Release of I2 by Laminaria digitata in Chamber Experiments'
Enowmbi R. Ashu-Ayem, Udo Nitschke, Ciaran Monahan, Jun Chen, Steven B. Darby, Paul D. Smith, Colin D. O’Dowd, Dagmar B. Stengel, and Dean S. Venables (2012) 'Coastal Iodine Emissions. 1. Release of I2 by Laminaria digitata in Chamber Experiments'. Environmental Science and Technology, 46 :10413-10421 Globe icon [DOI] [Full Text] [Details]
(2012)'Coastal Iodine Emissions: Part 2. Chamber Experiments of Particle Formation from Laminaria digitata-Derived and Laboratory- Generated I2'
Ciaran Monahan, Enowmbi R. Ashu-Ayem, Udo Nitschke, Steven B. Darby, Paul D. Smith, Dagmar B. Stengel, Dean S. Venables, and Colin D. O’Dowd (2012) 'Coastal Iodine Emissions: Part 2. Chamber Experiments of Particle Formation from Laminaria digitata-Derived and Laboratory- Generated I2'. Environmental Science and Technology, 46 :10422-10428 Globe icon [DOI] [Full Text] [Details]
(2012)'Cavity-enhanced absorption using an atomic line source: application to deep-UV measurements'
Darby, SB,Smith, PD,Venables, DS (2012) 'Cavity-enhanced absorption using an atomic line source: application to deep-UV measurements'. Analyst, 137 :2318-2321 Globe icon [DOI] [Full Text] [Details]
(2011)'A broadband optical cavity spectrometer for measuring weak near-ultraviolet absorption spectra of gases'
Chen, J,Venables, DS; (2011) 'A broadband optical cavity spectrometer for measuring weak near-ultraviolet absorption spectra of gases'. Atmospheric Measurement Techniques, 4 :425-436 Globe icon [DOI] [Full Text] [Details]
(2011)'Near-Ultraviolet Absorption Cross Sections of Nitrophenols and Their Potential Influence on Tropospheric Oxidation Capacity'
Chen, J., Wenger, J.C., and Venables, D.S.; (2011) 'Near-Ultraviolet Absorption Cross Sections of Nitrophenols and Their Potential Influence on Tropospheric Oxidation Capacity'. Journal of Physical Chemistry A, 115 :12235-12242 [DOI] [Full Text] [Details]
(2010)'Intercomparison of measurements of NO2 concentrations in the atmosphere simulation chamber SAPHIR during the NO3Comp campaign'
Fuchs, H,Ball, SM,Bohn, B,Brauers, T,Cohen, RC,Dorn, HP,Dube, WP,Fry, JL,Haseler, R,Heitmann, U,Jones, RL,Kleffmann, J,Mentel, TF,Musgen, P,Rohrer, F,Rollins, AW,Ruth, AA,Kiendler-Scharr, A,Schlosser, E,Shillings, AJL,Tillmann, R,Varma, RM,Venables, DS,Tapia, GV,Wahner, A,Wegener, R,Wooldridge, PJ,Brown, SS; (2010) 'Intercomparison of measurements of NO2 concentrations in the atmosphere simulation chamber SAPHIR during the NO3Comp campaign'. Atmospheric Measurement Techniques, 3 :21-37 Globe icon [DOI] [Full Text] [Details]
(2009)'Long optical cavities for open-path monitoring of atmospheric trace gases and aerosol extinction'
Varma, R. M.,Venables, D. S.,Ruth, A. A.,Heitmann, U.,Schlosser, E.,Dixneuf, S.; (2009) 'Long optical cavities for open-path monitoring of atmospheric trace gases and aerosol extinction'. Applied Optics, 48 (4):B159-B171 Globe icon [DOI] [Full Text] [Details]
(2008)'Incoherent broadband cavity-enhanced absorption spectroscopy in the near-ultraviolet: Application to HONO and NO2'
Gherman, T.,Venables, D. S.,Vaughan, S.,Orphal, J.,Ruth*, A. A.; (2008) 'Incoherent broadband cavity-enhanced absorption spectroscopy in the near-ultraviolet: Application to HONO and NO2'. Environmental Science & Technology, 42 (3):890-895 Globe icon [DOI] [Full Text] [Details]
(2006)'High sensitivity in situ monitoring of NO3 in an atmospheric simulation chamber using incoherent broadband cavity-enhanced absorption spectroscopy'
Venables, D. S.,Gherman, T.,Orphal, J.,Wenger, J. C.,Ruth*, A. A.; (2006) 'High sensitivity in situ monitoring of NO3 in an atmospheric simulation chamber using incoherent broadband cavity-enhanced absorption spectroscopy'. Environmental Science & Technology, 40 (21):6758-6763 Globe icon [DOI] [Full Text] [Details]
(2005)'The rotationally-resolved absorption spectrum of formaldehyde from 6547 to 6804 cm(-1)'
Staak, M.,Gash, E. W.,Venables, D. S.,Ruth*, A. A.; (2005) 'The rotationally-resolved absorption spectrum of formaldehyde from 6547 to 6804 cm(-1)'. Journal of Molecular Spectroscopy, 229 (11):115-121 Globe icon [DOI] [Full Text] [Details]
(2001)'Effect of reverse micelle size on the librational band of confined water and methanol'
Venables, D. S.,Huang, K.,Schmuttenmaer, C. A.; (2001) 'Effect of reverse micelle size on the librational band of confined water and methanol'. Journal of Physical Chemistry B, 105 (38):9132-9138 [DOI] [Details]
(2000)'Structure and dynamics of nonaqueous mixtures of dipolar liquids. I. Infrared and far-infrared spectroscopy'
Venables, D. S.,Chiu, A.,Schmuttenmaer, C. A.; (2000) 'Structure and dynamics of nonaqueous mixtures of dipolar liquids. I. Infrared and far-infrared spectroscopy'. Journal of Chemical Physics, 113 (8):3243-3248 [DOI] [Details]
(2000)'Structure and dynamics of nonaqueous mixtures of dipolar liquids. II. Molecular dynamics simulations'
Venables, D. S.,Schmuttenmaer, C. A.; (2000) 'Structure and dynamics of nonaqueous mixtures of dipolar liquids. II. Molecular dynamics simulations'. Journal of Chemical Physics, 113 (8):3249-3260 [DOI] [Details]
(2000)'Spectroscopy and dynamics of mixtures of water with acetone, acetonitrile, and methanol'
Venables, D. S.,Schmuttenmaer, C. A.; (2000) 'Spectroscopy and dynamics of mixtures of water with acetone, acetonitrile, and methanol'. Journal of Chemical Physics, 113 (24):11222-11236 [DOI] [Details]
(1998)'Far-infrared spectra and associated dynamics in acetonitrile-water mixtures measured with femtosecond THz pulse spectroscopy'
Venables, D. S.,Schmuttenmaer, C. A.; (1998) 'Far-infrared spectra and associated dynamics in acetonitrile-water mixtures measured with femtosecond THz pulse spectroscopy'. Journal of Chemical Physics, 108 (12):4935-4944 [DOI] [Details]
(1997)'Reduction of tungsten oxides with carbon monoxide'
Venables, D. S.,Brown, M. E.; (1997) 'Reduction of tungsten oxides with carbon monoxide'. Thermochimica Acta, 291 (1-2):131-140 [DOI] [Details]
(1996)'Reduction of tungsten oxides with hydrogen and with hydrogen and carbon'
Venables, D. S.,Brown, M. E.; (1996) 'Reduction of tungsten oxides with hydrogen and with hydrogen and carbon'. Thermochimica Acta, 285 (2):361-382 [DOI] [Details]
(1996)'Reduction of tungsten oxides with carbon .1. Thermal analyses'
Venables, D. S.,Brown, M. E.; (1996) 'Reduction of tungsten oxides with carbon .1. Thermal analyses'. Thermochimica Acta, 283 :251-264 [DOI] [Details]
(1996)'Reduction of tungsten oxides with carbon .2. Tube furnace experiments'
Venables, D. S.,Brown, M. E.; (1996) 'Reduction of tungsten oxides with carbon .2. Tube furnace experiments'. Thermochimica Acta, 283 :265-276 [DOI] [Details]
(1995)'Combustion of some zinc-fueled binary pyrotechnic systems'
Tribelhorn, M. J.,Venables, D. S.,Brown, E.; (1995) 'Combustion of some zinc-fueled binary pyrotechnic systems'. Thermochimica Acta, 256 (2):309-324 [DOI] [Details]
(1995)'A thermoanalytical study of some zinc-fuelled binary pyrotechnic systems'
Tribelhorn, M. J.,Venables, D. S.,Brown, M. E.; (1995) 'A thermoanalytical study of some zinc-fuelled binary pyrotechnic systems'. Thermochimica Acta, 269 :649-663 [DOI] [Details]

Book Chapters

YearPublication
(2000)'A direct measurement of intermolecular solvation dynamics using time-resolved THz spectroscopy (TRTS)'
G.M. Turner, M.C. Beard, D.S. Venables, and C.A. Schmuttenmaer; (2000) 'A direct measurement of intermolecular solvation dynamics using time-resolved THz spectroscopy (TRTS)' In: Photoinduced charge transfer. [Details]
(1998)'Time-resolved THz studies of liquid dynamics'
D.S. Venables and C.A. Schmuttenmaer; (1998) 'Time-resolved THz studies of liquid dynamics' In: Springer Series on Chemical Physics, vol. 63. [Details]

Conference Publications

YearPublication
(2013)International Radiation Symposium 2012
E.M. Wilson, J. Chen, R.M. Varma, J.C. Wenger, and D.S. Venables (2013) A Novel, Broadband Spectroscopic Method to Measure the Extinction Coefficient of Aerosols in the Near-Ultraviolet . In: In: AIP Conference Proceedings, 2013, 1531 eds. International Radiation Symposium 2012 , pp.155-158 [Details]
(2008)Proceedings of the 101st Annual Conference of the Air and Waste Management Association
Varma, RM, Venables, DS, Ruth, AA, Heitmann, U, Schlosser, E, Dixneuf, S; (2008) Long Optical Cavities For Open-Path Monitoring of Atmospheric Trace Gases and Aerosol Extinction Proceedings of the 101st Annual Conference of the Air and Waste Management Association [Details]
(2008)Proceedings of the 3rd National SOLAS Workshop (Ireland) 2007
Venables, D.S.; (2008) Applying new developments in trace gas detection to atmospheric chemistry . In: Ward, B eds. Proceedings of the 3rd National SOLAS Workshop (Ireland) 2007 Galway, , pp.1-6 [Details]
(2005)Opto-Ireland 2005: Optical Sensing and Spectroscopy
Venables D.S., Staak M., Ruth A.A.; (2005) Broadband cavity-enhanced absorption spectroscopy for trace gas detection . In: Proceedings of SPIE, Vol. 5826 eds. Opto-Ireland 2005: Optical Sensing and Spectroscopy Royal Dublin Society, Dublin, Ireland, , 04-APR-05 - 06-APR-05 , pp.202-211 [Details]
(2004)Conference on Precision Electromagnetic Measurements
M.J. Prinsloo, S. Singh, D. Venables (2004) South African Frequency Standard through digital diode laser stabilisation to a sub-doppler rovibrational line of acetylene Conference on Precision Electromagnetic Measurements [Details]
(2000)Proceedings of the 10th Annual Symposium of the NSF Center
Turner, G.M., Beard, M.C., Venables, D.S., Schmuttenmaer, C.A.; (2000) A direct measurement of intermolecular solvation dynamics using time-resolved THz spectroscopy (TRTS) . In: Rothberg. L eds. Proceedings of the 10th Annual Symposium of the NSF Center Rochester, NY, USA, , 26-JUL-99 - 29-JUL-99 [Details]
(1998)Ultrafast Phenomena XI
Venables, D.S., Schmuttenmaer, C.A.; (1998) Time-Resolved THz Studies of Liquid Dynamics, in Springer Ser. Chem. Phys., 63 . In: W. Zinth, J. G. Fujimoto, T. Elsaesser, D. Wiersma eds. Ultrafast Phenomena XI [Details]

Published Reports

YearPublication
(2008)Air pollution - trace radical absorption through cavity-enhanced spectroscopy (TRACES).
U. Heitmann, A.A. Ruth, R.M. Varma, D.S. Venables; (2008) Air pollution - trace radical absorption through cavity-enhanced spectroscopy (TRACES). Final Report (2005-ET-MS-28-M3), prepared for the Environmental Protection Agency, Johnstown Castle. [Details]

Electronic Article

YearPublication
(2012)Seaweeds and the atmosphere.
S. Dixneuf, A.A. Ruth, and D.S. Venables (2012) Seaweeds and the atmosphere. www.earthzine.org: Electronic Article Globe icon [Details]