Ecotoxicology and Environmental Safety, 2021 The transformation between hexavalent chromium (Cr6+) and trivalent chromium (Cr3+) has a significant impact on ecosystems, as Cr6+ has higher levels of toxicity than Cr3+.
Quoc Anh Nguyen +5 more
doaj +1 more source
Porosity measurements of interstellar ice mixtures using optical laser interference and extended effective medium approximations [PDF]
, 2013 Aims. This article aims to provide an alternative method of measuring the porosity of multi-phase composite ices from their refractive indices and of characterising how the abundance of a premixed contaminant (e.g., CO2) affects the porosity of water ...
Bonnin, M. +8 more
core +4 more sources
Distinguishing ice β-XV from deep glassy ice VI: Raman spectroscopy
Physical Chemistry Chemical Physics, 2019 Evidence for the existence of D2O-ice β-XV is given by the observation of its librational Raman band at 380 cm−1.
Alexander V. Thoeny +2 more
openaire +3 more sources
Brief Communication: Ikaite (CaCO3·6H2O) discovered in Arctic sea ice [PDF]
The Cryosphere, 2010 We report for the first time on the discovery of calcium carbonate crystals as ikaite (CaCO3·6H2O) in sea ice from the Arctic (Kongsfjorden, Svalbard) as confirmed by morphology and indirectly by X-ray diffraction as well as XANES spectroscopy of ...
M. A. Granskog +6 more
doaj +1 more source
Gridmapping the northern plains of Mars: Geomorphological, Radar and Water-Equivalent Hydrogen results from Arcadia Plantia [PDF]
, 2019 A project of mapping ice-related landforms was undertaken to understand the role of sub-surface ice in the northern plains. This work is the first continuous regional mapping from CTX (“ConTeXt Camera”, 6 m/pixel; Malin et al., 2007) imagery in Arcadia ...
Balme, Matthew R. +20 more
core +3 more sources
Two-dimensional infrared spectroscopy of neat ice Ih [PDF]
Physical Chemistry Chemical Physics, 2012 The OH stretch line shape of ice Ih exhibits distinct peaks, the assignment of which remains controversial. We address this longstanding question using two dimensional infrared (2D IR) spectroscopy of the OH stretch of H(2)O and the OD stretch of D(2)O of ice Ih at T = 80 K.
Perakis, Fivos, Hamm, Peter
openaire +3 more sources
CO ice photodesorption: A wavelength-dependent study [PDF]
, 2011 UV-induced photodesorption of ice is a non-thermal evaporation process that can explain the presence of cold molecular gas in a range of interstellar regions.
Bertin, Mathieu +6 more
core +2 more sources
Investigation of HNCO isomers formation in ice mantles by UV and thermal processing: an experimental approach [PDF]
, 2014 Current gas phase models do not account for the abundances of HNCO isomers detected in various environments, suggesting a formation in icy grain mantles.
Caro, G. M. Muñoz +4 more
core +1 more source
CO$_2$ Infrared Phonon Modes in Interstellar Ice Mixtures
, 2016 CO$_2$ ice is an important reservoir of carbon and oxygen in star and planet forming regions. Together with water and CO, CO$_2$ sets the physical and chemical characteristics of interstellar icy grain mantles, including desorption and diffusion energies
Cooke, Ilsa R. +2 more
core +1 more source
Development of a Bioaerosol single particle detector (BIO IN) for the Fast Ice Nucleus CHamber FINCH [PDF]
, 2010 In this work we present the setup and first tests of our new BIO IN detector. This detector was constructed to classify atmospheric ice nuclei (IN) for their biological content. It is designed to be coupled to the Fast Ice Nucleus CHamber FINCH.
Bingemer, Heinz +4 more
core +1 more source