Nitrate photochemistry at the air–ice interface and in other ice reservoirs

AS McFall, KC Edwards… - Environmental science & …, 2018 - ACS Publications
The photolysis of snowpack nitrate (NO3–) is an important source of gaseous reactive
nitrogen species that affect atmospheric oxidants, particularly in remote regions. However, it …

Mixing of the immiscible: Hydrocarbons in water-ice near the ice crystallization temperature

A Lignell, MS Gudipati - The Journal of Physical Chemistry A, 2015 - ACS Publications
Structural changes in hydrocarbon-doped water-ice during amorphous to crystalline phase
conversion are investigated using polycyclic aromatic hydrocarbons (PAHs) as probes. We …

Measuring a 10,000-fold enhancement of singlet molecular oxygen (1O2*) concentration on illuminated ice relative to the corresponding liquid solution

JP Bower, C Anastasio - Atmospheric environment, 2013 - Elsevier
Much attention has focused on the highly reactive hydroxyl radical in the oxidation of trace
organic compounds on snow and ice (and subsequent release of volatile organics to the …

Role of nitrite in the photochemical formation of radicals in the snow

HW Jacobi, J Kleffmann, G Villena… - … science & technology, 2014 - ACS Publications
Photochemical reactions in snow can have an important impact on the composition of the
atmosphere over snow-covered areas as well as on the composition of the snow itself. One …

On the pH dependence of photo‐induced volatilization of nitrogen oxides from frozen solutions containing nitrate

O Abida, HD Osthoff - Geophysical research letters, 2011 - Wiley Online Library
Photochemically induced emissions from the surfaces of snow and ice crystals are known to
alter the composition of the troposphere. In particular, photolysis of the nitrate anion in snow …

Equilibrium shifts upon freezing

JT Newberg - Fluid Phase Equilibria, 2018 - Elsevier
Upon freezing aqueous solutions, dissolved solutes are forced into small liquid regions
within the frozen ice. This phenomenon affects solute concentrations, solution pH and can …

Photoinduced Reversible Electron Transfer Between the Benzhydryl Radical and Benzhydryl Cation in Amorphous Water–Ice

S Radhakrishnan, J Mieres-Perez… - The Journal of …, 2017 - ACS Publications
The benzhydryl radical is generated in high yields by flash-vacuum thermolysis of 1, 1, 2, 2-
tetraphenylethane with subsequent trapping of the product in argon or amorphous water at 3 …

Exposure to light elicits a spectrum of chemical changes in soil

TA Doane, LCR Silva… - Journal of Geophysical …, 2019 - Wiley Online Library
The significance of photochemically active solar radiation is well substantiated in Earth's air
and water environments, but no broad connection has yet been ascertained between …

Chemistry in Snow and Ice: What have We Learned and What Can We Do

S Wang - Chemistry in the Cryosphere (In 2 Parts), 2022 - World Scientific
Snow and ice in Earth's cryosphere greatly affects the overlaying atmosphere. Sunlit natural
snowpack and ice surfaces may emit a wide range of trace gases, such as reactive nitrogen …

Snow ecosystem, microbial community structure and function in artic snowpacks

L Maccario - 2015 - theses.hal.science
The Arctic seasonal snowpack can extend at times over a third of the Earth's land surface.
This chemically dynamic environment interacts with different environmental compartments …