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B. Karlsson, C. Ribbing (1982)
Optical constants and spectral selectivity of stainless steel and its oxidesJournal of Applied Physics, 53
E. Galbavy, C. Anastasio, B. Lefer, S. Hall (2007)
Light penetration in the snowpack at Summit, Greenland: Part 2 Nitrate photolysisAtmospheric Environment, 41
W. Wiscombe, S. Warren (1980)
A Model for the Spectral Albedo of Snow. I: Pure SnowJournal of the Atmospheric Sciences, 37
Tara Kahan, D. Donaldson (2007)
Photolysis of polycyclic aromatic hydrocarbons on water and ice surfaces.The journal of physical chemistry. A, 111 7
G. Phillips, W. Simpson (2005)
Verification of snowpack radiation transfer models using actinometryJournal of Geophysical Research, 110
L. Chu, C. Anastasio (2003)
Quantum Yields of Hydroxyl Radical and Nitrogen Dioxide from the Photolysis of Nitrate on IceJournal of Physical Chemistry A, 107
(2006)
© Author(s) 2007. This work is licensed under a Creative Commons License. Atmospheric Chemistry and Physics
H. Beine, C. Anastasio (2011)
The photolysis of flash‐frozen dilute hydrogen peroxide solutionsJournal of Geophysical Research, 116
E. Galbavy, C. Anastasio, B. Lefer, S. Hall (2007)
Light penetration in the snowpack at Summit, Greenland: Part 1: Nitrite and hydrogen peroxide photolysisAtmospheric Environment, 41
P. Leighton, F. Lucy (1934)
The Photoisomerization of the o‐Nitrobenzaldehydes I. Photochemical ResultsJournal of Chemical Physics, 2
K. Ram, C. Anastasio (2009)
Photochemistry of phenanthrene, pyrene, and fluoranthene in ice and snowAtmospheric Environment, 43
E. Galbavy, K. Ram, C. Anastasio (2010)
2-Nitrobenzaldehyde as a chemical actinometer for solution and ice photochemistryJournal of Photochemistry and Photobiology A-chemistry, 209
T. Kahan, R. Zhao, Klaudia Jumaa, D. Donaldson (2010)
Anthracene photolysis in aqueous solution and ice: photon flux dependence and comparison of kinetics in bulk ice and at the air-ice interface.Environmental science & technology, 44 4
C. Anastasio, L. Chu (2009)
Photochemistry of nitrous acid (HONO) and nitrous acidium ion (H2ONO) in aqueous solution and ice.Environmental science & technology, 43 4
L. Chu, C. Anastasio (2007)
Temperature and wavelength dependence of nitrite photolysis in frozen and aqueous solutions.Environmental science & technology, 41 10
C. Meusinger, T. Berhanu, J. Erbland, J. Savarino, M. Johnson (2014)
Laboratory study of nitrate photolysis in Antarctic snow. I. Observed quantum yield, domain of photolysis, and secondary chemistry.The Journal of chemical physics, 140 24
C. Boxe, A. Colussi, M. Hoffmann, I. Pérez, J. Murphy, R. Cohen (2006)
Kinetics of NO and NO2 evolution from illuminated frozen nitrate solutions.The journal of physical chemistry. A, 110 10
P. Borovanský, C. Kirchner, H. Kirchner, Pierre-Etienne Moreau, C. Ringeissen (1998)
An overview of ELAN
W. Simpson, M. King, H. Beine, R. Honrath, Xianliang Zhou (2002)
Radiation-transfer modeling of snow-pack photochemical processes during ALERT 2000Atmospheric Environment, 36
M. Guzman, M. Hoffmann, A. Colussi (2007)
Photolysis of pyruvic acid in ice: Possible relevance to CO and CO2 ice core record anomaliesJournal of Geophysical Research, 112
P. Klán, I. Holoubek (2002)
Ice (photo)chemistry. Ice as a medium for long-term (photo)chemical transformations--environmental implications.Chemosphere, 46 8
S. Twomey, K. Seton (1980)
Inferences of Gross Microphysical Properties of Clouds from Spectral Reflectance MeasurementsJournal of the Atmospheric Sciences, 37
Y. Dubowski, M. Hoffmann (2000)
Photochemical transformations in ice: Implications for the fate of chemical speciesGeophysical Research Letters, 27
M. Janecek, William Moses (2008)
Optical Reflectance Measurements for Commonly Used ReflectorsIEEE Transactions on Nuclear Science, 55
Environmental contextAnthropogenic pollutants deposited in and on snowpacks can undergo many sunlight-driven reactions. These processes have been studied, but typically without measuring the photon flux, the amount of light seen by the reactants, which is needed for comparing results across studies. This work investigates the effects of container albedo, solute location and mechanical ice crushing on the photon flux in laboratory ice samples to understand how these factors might affect photochemical rates.AbstractThe photon flux directly affects the rates of both direct and indirect photodegradation reactions in water and ice. This flux might vary in the different solute reservoirs of water ice (e.g. between the bulk ice and airice interface), which might help explain reported differences in measured reaction rates. To address this possibility, here we use 2-nitrobenzaldehyde chemical actinometry to measure photon fluxes in ice samples prepared using different freezing techniques in order to put 2-nitrobenzaldehyde into different regions in the ice samples. Overall, the solute location has little effect on photon flux in water ice (purified frozen water) samples, with a maximum observed enhancement of 429 relative to aqueous values. However, the albedo (reflectivity) of the sample container strongly influences the photon flux in water and ice samples: for the same incident irradiance, 2-nitrobenzaldehyde loss is four times higher in a white beaker compared with in a dark-brown beaker. In addition, crushing an ice sample to a 2-mm grain size increases the photon flux in the resulting ice granules by 50 compared with in an intact ice disc (and by 80 compared with the corresponding solution). Although photon fluxes are similar in different solute reservoirs in and on ice, our results show that photon fluxes within a frozen (or aqueous) sample cannot be simply determined from incident fluxes, but instead need to be measured using the same sample geometry and container type.
Environmental Chemistry – CSIRO Publishing
Published: Jan 7, 2016
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