i
Superseded
This Document Has Been Replaced By:
i
Retired
This Document Has Been Retired
i
Up-to-date Information
This is the latest update:
Environmental Processing of Lipids Driven by Aqueous Photochemistry of α-Keto Acids
-
Published Date:
2018
-
Source:ACS Cent. Sci. 2018, 4, 5, 624–630
-
Details:
-
Personal Author:
-
Description:Sunlight can initiate photochemical reactions of organic molecules though direct photolysis, photosensitization, and indirect processes, often leading to complex radical chemistry that can increase molecular complexity in the environment. α-Keto acids act as photoinitiators for organic species that are not themselves photoactive. Here, we demonstrate this capability through the reaction of two α-keto acids, pyruvic acid and 2-oxooctanoic acid, with a series of fatty acids and fatty alcohols. We show for five different cases that a cross-product between the photoinitiated α-keto acid and non-photoactive species is formed during photolysis in aqueous solution. Fatty acids and alcohols are relatively unreactive species, which suggests that α-keto acids are able to act as radical initiators for many atmospherically relevant molecules found in the sea surface microlayer and on atmospheric aerosol particles.
-
Keywords:
-
Document Type:
-
Collection(s):
-
Main Document Checksum:urn:sha256:af6bf99d4b2b293054be5ac78887f58fc620c23d4415605de6021f7f9cee5472
- File Type:
-
Supporting Files:No Additional Files
Related Documents:
-
-
Personal Author:Ran, Jiangjun; Vizcaino, Miren; Ditmar, Pavel; van de Broeke, Michiel R.; Moon, Twila; Steger, Christian R.; Enderlin, Ellyn M.; Wouter, Bert; Noël, Brice; Reijmer, Catharina H.; Klees, Roland; Zhong, Min; Liu, Lin; Fettweis, Xavier;Published Date:2018Source:The Cryosphere, 12, 2981–2999, 2018Description:The Greenland Ice Sheet (GrIS) is currently losing ice mass. In order to accurately predict future sea level rise, the mechanisms driving the observed mass loss must be better understood. Here, we combine data from the satellite gravimetry mission Gr...
Personal Author:Stepien, C. A.; Snyder, M. R.; Elz, A. E.;Published Date:2019Source:Plos One, 14(3)Description:In the 1970s, the introduced silver carp Hypophthalmichthys molitrix (which is indigenous to eastern Asia) escaped from southern U.S. aquaculture to spread throughout the Mississippi River basin, and since has steadily moved northward. This large, pr...
Personal Author:Guo, F.; Liu, Q.; Sun, S.; Yang, J.;Published Date:2015Source:Journal of Climate, (28), 8, 3073-3092Description:Using observational data and phase 5 of the Coupled Model Intercomparison Project (CMIP5) model outputs [the preindustrial (PI) control run of the Community Climate System Model, version 4 (CCSM4) and historical simulations of 17 CMIP5 models], India...
Personal Author:Finisdore, J.; Rhodes, C.; Haines-Young, R.; Maynard, S.; Wielgus, J.; Dvarskas, A.; Houdet, J.; Quétier, F.; Lamothe, K.A.; Ding, H.; Soulard, F.; Van Houtven, G.; Rowcroft, P.;Published Date:2020Source:Ecosystem Services, 45Description:Ecosystem services (ES) practitioners (e.g., researchers, policy makers) have been working to better define, measure, and value the ways that nature contributes to society. Because measurement techniques follow the labeling or identification of ES, p...
Personal Author:Williamson, Andrew G.; Banwell, Alison F.; Willis, Ian C.; Arnold, Neil S.;Published Date:2018Source:The Cryosphere, 12, 3045–3065, 2018Description:Remote sensing is commonly used to monitor supraglacial lakes on the Greenland Ice Sheet (GrIS); however, most satellite records must trade off higher spatial resolution for higher temporal resolution (e.g. MODIS) or vice versa (e.g. Landsat). Here, ...
Personal Author:Wadhams, P.; Aulicino, G.; Parmiggiani, F.; Persson, P. O. G.; Holt, B.;Published Date:2018Source:JGR Oceans 123(3): 2213-2237, 2018Description:The early autumn voyage of RV Sikuliaq to the southern Beaufort Sea in 2015 offered very favorable opportunities for observing the properties and thicknesses of frazil‐pancake ice types. The operational region was overlaid by a dense network of ret...
Personal Author:Gray, Harrison J.; Tucker, Gregory E.; Mahan, Shannon A.;Published Date:2019Source:Reviews of Geophysics, 57(3), 987-1017Description:Luminescence holds unique potential as a sediment tracer and provenance method. The tracer application of luminescence has key advantages including ease of measurement, relatively low cost, and applicability to geologically ubiquitous quartz and feld...
Personal Author:Morrison, A. L.; Kay, J. E.; Chepfer, H.; Guzman, R.; Yettella, V.;Published Date:2018Source:JGR Atmospheres 123(1):473-490, 2018Description:While the radiative influence of clouds on Arctic sea ice is known, the influence of sea ice cover on Arctic clouds is challenging to detect, separate from atmospheric circulation, and attribute to human activities. Providing observational constraint...
Personal Author:Goodkin, N. F.; Bolton, A.; Hughen, K. A.; Karnauskas, K. B.; Griffin, S.; Phan, K. H.; Vo, S. T.; Ong, M. R.; Druffel, E. R. M.;Published Date:2019Source:Geophysical Resource Letters 46(9), 4790-4798Description:The East Asian Monsoon (EAM) impacts storms, freshwater availability, wind energy production, coal consumption, and subsequent air quality for billions of people across Asia. Despite its importance, the EAM's long‐term behavior is poorly understood...
Personal Author:Hamlington, Benjamin D.; Fasullo, John T.; Nerem, R. Steven; Kim, Kwang-Yul; Landerer, F. W.;Published Date:2019Source:Geophysical Research Letters, 46(9), 4844-4853Description:The continuous and near‐global coverage of satellite altimeters has provided an improved understanding of sea level rise on both global and regional scales. With its relatively short record, however, questions have persisted regarding how well sate...
Personal Author:Hurteau, Matthew D.; Liang, Shuang; Westerling, A. LeRoy; Wiedinmyer, Christine;Published Date:2019Source:Scientific Reports, 9(1), 2838Description:Climate influences vegetation directly and through climate-mediated disturbance processes, such as wildfire. Temperature and area burned are positively associated, conditional on availability of vegetation to burn. Fire is a self-limiting process tha...
Personal Author:Nagy, R. Chelsea; Porder, Stephen; Brando, Paulo; Davidson, Eric A.; Figueira, Adelaine Michela e Silva; Neill, Christopher; Riskin, Shelby; Trumbore, Susan;Published Date:2018Source:JGR Biogeosciences 123(1):18-31, 2018Description:Climate and land use models predict that tropical deforestation and conversion to cropland will produce a large flux of soil carbon (C) to the atmosphere from accelerated decomposition of soil organic matter (SOM). However, the C flux from the deep t...
Personal Author:Martin, N. J.; Conroy, J. L.; Noone, D.; Cobb, K. M.; Konecky, B. L.; Rea, S.;Published Date:2018Source:JGR Atmospheres 123(1):261-275, 2018Description:The origin of stable isotopic variability in precipitation over time and space is critical to the interpretation of stable isotope‐based paleoclimate proxies. In the eastern equatorial Pacific, modern stable isotope measurements in precipitation (...
Personal Author:Nathan, B. J.; Lauvaux, T.; Turnbull, J. C.; Richardson, S. J.; Miles, N. L.; Gurney, K. R.;Published Date:2018Source:JGR Atmospheres 123(12): 13611-13621, 2018Description:We assimilate multiple trace gas species within a single high‐resolution Bayesian inversion system to optimize CO2ff emissions for individual source sectors. Starting with carbon monoxide (CO), an atmospheric trace gas with fairly well‐known emis...
Personal Author:Zerefos, Christos; Kapsomenakis, John; Eleftheratos, Kostas; Tourpali, Kleareti; Petropavlovskikh, Irina; Hubert, Daan; Godin-Beekmann, Sophie; Steinbrecht, Wolfgang; Frith, Stacy; Sofieva, Viktoria; Hassler, Birgit;Published Date:2018Source:Atmos. Chem. Phys., 18, 6427–6440, 2018Description:This paper is focusing on the representativeness of single lidar stations for zonally averaged ozone profile variations over the middle and upper stratosphere. From the lower to the upper stratosphere, ozone profiles from single or grouped lidar stat...
Personal Author:Shobe, Charles M.; Tucker, Gergory E.; Rossi, Matthew W.;Published Date:2018Source:JGR Earth Surface 123(8): 1931-1957Description:Geomorphologists often rely on simple models of river channel incision for predicting rates of landscape evolution and channel response to perturbations, as well as extracting climatic and tectonic signals from river longitudinal profiles. Recent wor...
Personal Author:Scambos, T. A.; Campbell, G. G.; Pope, A.; Haran, T.; Muto, A.; Lazzara, M.; Reijmer, C. H.; Van den Broeke, M. R.;Published Date:2018Source:Geophysical Research Letters 45(12): 6124-6133, 2018Description:We identify areas near the East Antarctic ice divide where <−90 °C surface snow temperatures are observed in wintertime satellite thermal‐band data under clear‐sky conditions. The lowest temperatures are found in small (<200 km2) topographic b...
Personal Author:O'Dell, C. W.; Eldering, A.; Wennberg, P. O.; Crisp, D.; Gunson, M. R.; Fisher, B.; Frankenberg, C.; Kiel, M.; Lindqvist, H.; Mandrake, L.; Merrelli, A.; Natraj, V.; Nelson, R. R.; Osterman, G. B.; Payne, V. H.; Taylor, T. E.; Wunch, D.; Drouin, B. J.; Oyafuso, F.; Chang, A.; McDuffie, J.; Smyth, M.; Baker, D. F.; Basu, S.; Chevallier, F.; Crowell, S. M. R.; Feng, L.; Palmer, P. I.; Dubey, M.; García, O. E.; Griffith, D. W. T.; Hase, F.; Iraci, L. T.; Kivi, R.; Morino, I.; Notholt, J.; Ohyama, H.; Petri, C.; Roehl, C. M.; Sha, M. K.; Strong, K.; Sussmann, R.; Te, Y.; Uchino, O.; Velazco, V. A.;Published Date:2018Source:Atmos. Meas. Tech., 11, 6539–6576, 2018Description:Since September 2014, NASA's Orbiting Carbon Observatory-2 (OCO-2) satellite has been taking measurements of reflected solar spectra and using them to infer atmospheric carbon dioxide levels. This work provides details of the OCO-2 retrieval algorith...
Personal Author:Papanastasiou, Dimitrios K.; Beltrone, Allison; Marshall, Paul; Burkholder, James B.;Published Date:2018Source:Atmos. Chem. Phys., 18, 6317–6330, 2018Description:Hydrochlorofluorocarbons (HCFCs) are ozone depleting substances and potent greenhouse gases that are controlled under the Montreal Protocol. However, the majority of the 274 HCFCs included in Annex C of the protocol do not have reported global warmin...
Personal Author:Conkling, M.; Hesp, K.; Munroe, S.; Sandoval, K.; Martens, D. E.; Sipkema, D.; Wijffels, R. H.; Pomponi, S. A.;Published Date:2019Source:Scientific Reports, 9(1)Description:Sponges (Phylum Porifera) are among the oldest Metazoa and considered critical to understanding animal evolution and development. They are also the most prolific source of marine-derived chemicals with pharmaceutical relevance. Cell lines are importa...
-