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Absolute 13C/12C Isotope Amount Ratio for Vienna Pee Dee Belemnite from Infrared Absorption Spectroscopy
Data provided by National Institute of Standards and Technology
Data set from peer-reviewed publication: A. J. Fleisher et al., Absolute 13C/12C Isotope Amount Ratio for Vienna Pee Dee Belemnite from Infrared Absorption Spectroscopy, Nature Physics. Measurements of isotope ratios are predominantly made with reference to standard specimens that have been characterized in the past. In the 1950s, the carbon isotope ratio was referenced to a belemnite sample collected by Heinz Lowenstam and Harold Urey in South Carolina?s Pee Dee region.
Tags: greenhouse gases,carbon dioxide,oceans,ph,marine mammals,remote sensing,seabirds,Environment and Climate,
Modified: 2024-02-22
Views: 0
Development of a Tool to Determine the Variability of Consensus Mass Spectra Supporting Data
Data provided by National Institute of Standards and Technology
Supporting datasets and algorithms (R-based) for the manuscript entitled "Development of a Tool to Determine the Variability of Consensus Mass Spectra", including an R Markdown script to reproduce the manuscript's figures.
Tags: mass spectrometry,uncertainty analysis,per- and polyfluoroalkyl substances,PFAS,reference mass spectrum,
Modified: 2024-02-22
Views: 0
Calculated Diffusivities for Water Isotopologues in Carbon Dioxide, Nitrogen, and the Atmosphere of Mars, and for Methane Isotopologues in Nitrogen Representing the Atmosphere of Titan
Data provided by National Institute of Standards and Technology
Values are computed for the dilute-gas diffusivity of water isotopologues in N2, CO2, and their mixture at a composition representing the atmosphere of Mars, for standard conditions of 101.325 kPa and water mole fraction approaching zero. Values are similarly computed for the diffusivity of methane isotopologues in N2, representing the atmosphere of Titan. Calculations employ state-of-the-art intermolecular potentials and classical trajectory calculations as described in the paper by R. Hellmann and A.H.
Tags: diffusivity,isotopes,Mars,Titan,water,methane,carbon dioxide,nitrogen,atmospheric science,
Modified: 2024-02-22
Views: 0
In Situ Carbon Dioxide, Methane, and Carbon Monoxide Mole Fractions from the Los Angeles Megacity Carbon Project
Data provided by National Institute of Standards and Technology
Hourly observations of carbon dioxide (CO2) and methane (CH4) mole fractions in dry air from tower- and rooftop-based sites in the Los Angeles Megacity Carbon Project network (currently 11 stations, with a 12th to be added in 2022). Carbon monoxide (CO) observations exist at several stations in this network but are not included in this data release pending additional calibration verification. Please contact the authors for higher frequency data, which are available on request. Data files are comma delimited (CSV).
Tags: greenhouse gases,GHG Measurements,Urban Emissions Modeling,carbon dioxide,methane,
Modified: 2024-02-22
Views: 0
Air-broadening in near-infrared carbon dioxide line shapes: quantifying contributions from O2, N2, and Ar
Data provided by National Institute of Standards and Technology
Dataset for generation of figures in Air-broadening in near-infrared carbon dioxide line shapes: quantifying contributions from O2, N2, and Ar (https://doi.org/10.1016/j.jqsrt.2021.107669)
Tags: spectroscopy,higher order lineshapes,carbon dioxide,
Modified: 2024-02-22
Views: 0
High accuracy spectroscopic parameters of the 1.27 um band of O2 measured with comb-referenced, cavity ring-down spectroscopy
Data provided by National Institute of Standards and Technology
Data corresponding to Figs. 2,3,5,6,11,12,13,14 for Fleurbaey et al J. Quant Spectrosc. Radiat. Transf. vol 270, 107684 (2021). doi.org.10.1016/j.jqsrt.2021.107684
Tags: greenhouse gases,carbon dioxide,oceans,ph,marine mammals,remote sensing,seabirds,Environment and Climate,
Modified: 2024-02-22
Views: 0
SRM 2969 Vitamin D Metabolites in Frozen Human Serum (Total 25-Hydroxyvitamin D Low Level) Data
Data provided by National Institute of Standards and Technology
SRM 2969 Electronic files containing certified values and their uncertainties, and the data used to assign those values
Tags: vitamin D,25-hydroxyvitamin D,serum,mass spectrometry,
Modified: 2024-02-22
Views: 0
SRM 2970 Vitamin D Metabolites in Frozen Human Serum (25-Hydroxyvitamin D2 High Level) Data
Data provided by National Institute of Standards and Technology
Electronic files containing certified values and their uncertainties, and the data used to assign those values.
Tags: vitamin D,25-hydroxyvitamin D,serum,mass spectrometry,
Modified: 2024-02-22
Views: 0
MAM Consortium Interlaboratory Study Raw Data
Data provided by National Institute of Standards and Technology
These LC-MS and LC-MS/MS raw data were collected for purposes of an interlaboratory study evaluating the multi-attribute method (MAM). Tryptic digests of native NISTmAb (the "Reference" and the "Unknown" samples), degraded NISTmAb (the "pH Stress" sample) and NISTmAb spiked with 15 heavy-labeled synthetic peptides (the "Spike" sample) were sent to each participating laboratory. One injection of each digest was acquired in MS-only mode, while a second injection was acquired in MS/MS mode.
Tags: attribute analytics,interlaboratory study,multi-attribute method,MAM Consortium,mass spectrometry,new peak detection,NPD,purity testing,round robin,targeted analytics,NISTmAb,
Modified: 2024-02-22
Views: 0
Supplemental Data and Source Code for ILSA Research
Data provided by National Institute of Standards and Technology
Source code associated with the Inverted Library Search Algorithm (ILSA) for identifying mixture components using is-CID mass spectra. This source code is frozen to accompany the manuscript titled "Updates to the Inverted Library Search Algorithm for mixture analysis" by Moorthy et. al.
Tags: mass spectrometry,Mixture Analysis,Search Algorithms,seized drug analysis,
Modified: 2024-02-22
Views: 0