Results 201 to 210 of about 45,399 (264)

Predictions of Anthropogenic Background PFAS Concentrations in Soil and Relation to Bedrock Lithology and Groundwater Quality. [PDF]

open access: yesEnviron Sci Technol
Tokranov AK   +7 more
europepmc   +1 more source

Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook   +38 more
wiley   +1 more source

Afghanite: A New Silicate‐Matrix Reference Material for In Situ Halogen and Sulfur Microanalysis

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points A new silicate matrix reference material for in situ chlorine and sulfur determination. Homogeneous across all measured elements. No matrix effects for Cl when calibrating silicate matrices, in contrast to scapolite, which causes systematic Cl overestimation of up to 13%.
Sebastian Stumpf   +7 more
wiley   +1 more source

SC‐550: A Sintered Calcite Reference Material for In Situ U‐Pb Geochronology

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points New calcite reference material (SC‐550) produced by high‐temperature and high‐pressure sintering of nano‐particulate powder from a microbial limestone. Homogeneous U content (2.3 ± 0.4 μg g‐1) and U‐Pb isotope ratios (< 0.6% RSD for 207Pb/206Pb; < 3% RSD for 238U/206Pb).
Lorenzo Tavazzani   +7 more
wiley   +1 more source

Review of the 2020 Statewide Suitability Survey of ASR and AR for Texas Aquifers

open access: yesGroundwater, EarlyView.
Since publication in 2020, the Statewide Survey of Aquifer Suitability for Aquifer Storage and Recovery Projects or Aquifer Recharge Projects interactive map experience and method have inspired researchers, water providers, and policymakers to explore the potential of aquifer storage and recovery and aquifer recharge in Texas.
Andrea D. Croskrey   +2 more
wiley   +1 more source

Depositional Environment and Diagenetic History of Gas Hydrate-Bearing Sediments of the Alaska North Slope (HYDRATE 02 Geo Data Well). [PDF]

open access: yesEnergy Fuels
Phillips SC   +9 more
europepmc   +1 more source

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