scholarly journals Determination of the Concentration and Isotopic Composition of Uranium in Environmental Air Filters

2009 ◽  
pp. 131-131-10
Author(s):  
GP Russ ◽  
JM Bazan
Keyword(s):  
Isotopic Composition ◽  
Air Filters ◽  
Environmental Air

scholarly journals A single-step purification method for the precise determination of the antimony isotopic composition of environmental, geological and biological samples by HG-MC-ICP-MS

2021 ◽  
Author(s):  
Ferrari Colin ◽  
Resongles Eléonore ◽  
Freydier Rémi ◽  
Casiot Corinne
Keyword(s):  
Isotopic Composition ◽  
Biological Samples ◽  
Precise Determination ◽  
Single Step ◽  
Functionalized Silica ◽  
Purification Method ◽  
Silica Powder ◽  
Icp Ms ◽  
Single Step Purification

Thiol-functionalized silica powder allowed single-step purification of antimony for exploring stable Sb isotope signatures in the environment.

Determination of the isotopic composition of atmospheric methane and its application in the Antarctic

1991 ◽  
Vol 96 (D8) ◽  
pp. 15455 ◽  
Author(s):  
David C. Lowe ◽  
Carl A. M. Brenninkmeijer ◽  
Stanley C. Tyler ◽  
Edward J. Dlugkencky
Keyword(s):  
Isotopic Composition ◽  
Atmospheric Methane ◽  
The Antarctic

scholarly journals Correction: A single-step purification method for the precise determination of the antimony isotopic composition of environmental, geological and biological samples by HG-MC-ICP-MS

2021 ◽  
Author(s):  
Colin Ferrari ◽  
Eléonore Resongles ◽  
Rémi Freydier ◽  
Corinne Casiot
Keyword(s):  
Isotopic Composition ◽  
Biological Samples ◽  
Precise Determination ◽  
Single Step ◽  
Purification Method ◽  
Icp Ms ◽  
Single Step Purification

Correction for ‘A single-step purification method for the precise determination of the antimony isotopic composition of environmental, geological and biological samples by HG-MC-ICP-MS’ by Colin Ferrari et al., J. Anal. At. Spectrom., 2021, 36, 776–785, DOI: "https://doi.org/10.1039/D0JA00452A">10.1039/D0JA00452A.

Isotopic Determination of Growth and Longevity in Fossil and Modern Invertebrates

1998 ◽  
Vol 4 ◽  
pp. 37-67 ◽  
Author(s):  
Douglas S. Jones
Keyword(s):  
Isotopic Composition ◽  
Oxygen Isotope ◽  
Oxygen Isotopes ◽  
Marine Organisms ◽  
Physical And Chemical

The isotopic composition of fossil invertebrates contains a wealth of information about the physical and chemical environments of the ancient past. The exploitation of this biogeochemical archive by paleontologists began about 50 years ago with the realization that the ratios of oxygen isotopes in the shells and skeletons of marine organisms offered the potential to accurately reconstruct paleoenvironmental conditions, particularly temperature (Urey, 1947; Urey et al., 1951). With the introduction of the oxygen isotope paleotemperature methodology (Epstein et al., 1951, 1953; Epstein and Lowenstam, 1953), the field of “isotope paleontology” was born (Wefer and Berger, 1991).

Application of an Isotope Binary Mixing Model for Determination of Precise Mercury Isotopic Composition in Samples with Low Mercury Concentration

2019 ◽  
Vol 91 (11) ◽  
pp. 7063-7069 ◽  
Author(s):  
Shuyuan Huang ◽  
Qingyong Song ◽  
Yuanbiao Zhang ◽  
Dongxing Yuan ◽  
Lumin Sun ◽  
...  
Keyword(s):  
Isotopic Composition ◽  
Mercury Concentration ◽  
Mixing Model ◽  
Binary Mixing

Spectroscopic determination of the isotopic composition of boron trifluoride

1966 ◽  
Vol 20 (4) ◽  
pp. 401-404 ◽  
Author(s):  
N. A. Zakorina ◽  
G. S. Lazeeva ◽  
A. A. Petrov
Keyword(s):  
Isotopic Composition ◽  
Boron Trifluoride ◽  
Spectroscopic Determination

scholarly journals Method for the determination of concentration and stable carbon isotope ratios of atmospheric phenols

2013 ◽  
Vol 6 (11) ◽  
pp. 2965-2974 ◽  
Author(s):  
M. Saccon ◽  
R. Busca ◽  
C. Facca ◽  
L. Huang ◽  
S. Irei ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Isotopic Composition ◽  
Isotope Ratio ◽  
Extraction Procedure ◽  
Carbon Isotopic Composition ◽  
Stable Carbon ◽  
Concentration Measurements ◽  
Isotope Ratio Measurements

Abstract. A method for the determination of the stable carbon isotopic composition of atmospheric nitrophenols in the gas and particulate phases is presented. It has been proposed to use the combination of concentration and isotope ratio measurements of precursor and product to test the applicability of results of laboratory studies to the atmosphere. Nitrophenols are suspected to be secondary products formed specifically from the photooxidation of volatile organic compounds. XAD-4TM resin was used as an adsorbent on quartz filters to sample ambient phenols using conventional high volume air samplers at York University in Toronto, Canada. Filters were extracted in acetonitrile, with a HPLC (high-performance liquid chromatography) clean-up step and a solid phase extraction step prior to derivatization with BSTFA (bis(trimethylsilyl) trifluoroacetamide). Concentration measurements were done with gas chromatography–mass spectrometry and gas chromatography–isotope ratio mass spectrometry was used for isotope ratio analysis. The technique presented allows for atmospheric compound-specific isotopic composition measurements for five semi-volatile phenols with an estimated accuracy of 0.3–0.5‰ at atmospheric concentrations exceeding 0.1 ng m−3 while the detection limits for concentration measurements are in the pg m−3 range. Isotopic fractionation throughout the entire extraction procedure and analysis was proven to be below the precision of the isotope ratio measurements. The method was tested by conducting ambient measurements from September to December 2011.

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