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Penelope L. King - One of the best experts on this subject based on the ideXlab platform.
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mid infrared emission spectroscopy and visible near infrared reflectance spectroscopy of fe sulfate minerals
American Mineralogist, 2015Co-Authors: Melissa D. Lane, Penelope L. King, Stanley A. Mertzman, Darby M Dyar, Takahiro Hiroi, Janice L. Bishop, David L Bish, Deanne A RogersAbstract:Sulfate minerals are important indicators for aqueous geochemical environments. The geology and mineralogy of Mars have been studied through the use of various remote-sensing techniques, including thermal (mid-infrared) emission and visible/near-infrared reflectance spectroscopies. Spectral analyses of spacecraft data (from orbital and landed missions) using these techniques have indicated the presence of sulfate minerals on Mars, including Fe-rich Sulfates on the iron-rich planet. Each individual Fe-sulfate mineral can be used to constrain bulk chemistry and lends more information about the specific formational environment [e.g., Fe 2+ Sulfates are typically more water soluble than Fe 3+ Sulfates and their presence would imply a water-limited (and lower Eh) environment; Fe 3+ Sulfates form over a range of hydration levels and indicate further oxidation (biological or abiological) and increased acidification]. To enable better interpretation of past and future terrestrial or planetary data sets, with respect to the Fe-Sulfates, we present a comprehensive collection of mid-infrared thermal emission (2000 to 220 cm −1 ; 5–45 μm) and visible/near-infrared (0.35–5 μm) spectra of 21 different ferrous- and ferric-iron sulfate minerals. Mid-infrared vibrational modes (for SO 4 , OH, H 2 O) are assigned to each thermal emissivity spectrum, and the electronic excitation and transfer bands and vibrational OH, H 2 O, and SO 4 overtone and combination bands are assigned to the visible/near-infrared reflectance spectra. Presentation and characterization of these Fe-sulfate thermal emission and visible/near-infrared reflectance spectra will enable the specific chemical environments to be determined when individual Fe-sulfate minerals are identified.
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Mid-infrared emission spectroscopy and visible/near-infrared reflectance spectroscopy of Fe-sulfate minerals
American Mineralogist, 2014Co-Authors: Melissa D. Lane, Penelope L. King, Stanley A. Mertzman, Takahiro Hiroi, M. Darby Dyar, Janice L. Bishop, David L Bish, A. Deanne RogersAbstract:Sulfate minerals are important indicators for aqueous geochemical environments. The geology and mineralogy of Mars have been studied through the use of various remote-sensing techniques, including thermal (mid-infrared) emission and visible/near-infrared reflectance spectroscopies. Spectral analyses of spacecraft data (from orbital and landed missions) using these techniques have indicated the presence of sulfate minerals on Mars, including Fe-rich Sulfates on the iron-rich planet. Each individual Fe-sulfate mineral can be used to constrain bulk chemistry and lends more information about the specific formational environment [e.g., Fe 2+ Sulfates are typically more water soluble than Fe 3+ Sulfates and their presence would imply a water-limited (and lower Eh) environment; Fe 3+ Sulfates form over a range of hydration levels and indicate further oxidation (biological or abiological) and increased acidification]. To enable better interpretation of past and future terrestrial or planetary data sets, with respect to the Fe-Sulfates, we present a comprehensive collection of mid-infrared thermal emission (2000 to 220 cm −1 ; 5–45 μm) and visible/near-infrared (0.35–5 μm) spectra of 21 different ferrous- and ferric-iron sulfate minerals. Mid-infrared vibrational modes (for SO 4 , OH, H 2 O) are assigned to each thermal emissivity spectrum, and the electronic excitation and transfer bands and vibrational OH, H 2 O, and SO 4 overtone and combination bands are assigned to the visible/near-infrared reflectance spectra. Presentation and characterization of these Fe-sulfate thermal emission and visible/near-infrared reflectance spectra will enable the specific chemical environments to be determined when individual Fe-sulfate minerals are identified.
Melissa D. Lane - One of the best experts on this subject based on the ideXlab platform.
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mid infrared emission spectroscopy and visible near infrared reflectance spectroscopy of fe sulfate minerals
American Mineralogist, 2015Co-Authors: Melissa D. Lane, Penelope L. King, Stanley A. Mertzman, Darby M Dyar, Takahiro Hiroi, Janice L. Bishop, David L Bish, Deanne A RogersAbstract:Sulfate minerals are important indicators for aqueous geochemical environments. The geology and mineralogy of Mars have been studied through the use of various remote-sensing techniques, including thermal (mid-infrared) emission and visible/near-infrared reflectance spectroscopies. Spectral analyses of spacecraft data (from orbital and landed missions) using these techniques have indicated the presence of sulfate minerals on Mars, including Fe-rich Sulfates on the iron-rich planet. Each individual Fe-sulfate mineral can be used to constrain bulk chemistry and lends more information about the specific formational environment [e.g., Fe 2+ Sulfates are typically more water soluble than Fe 3+ Sulfates and their presence would imply a water-limited (and lower Eh) environment; Fe 3+ Sulfates form over a range of hydration levels and indicate further oxidation (biological or abiological) and increased acidification]. To enable better interpretation of past and future terrestrial or planetary data sets, with respect to the Fe-Sulfates, we present a comprehensive collection of mid-infrared thermal emission (2000 to 220 cm −1 ; 5–45 μm) and visible/near-infrared (0.35–5 μm) spectra of 21 different ferrous- and ferric-iron sulfate minerals. Mid-infrared vibrational modes (for SO 4 , OH, H 2 O) are assigned to each thermal emissivity spectrum, and the electronic excitation and transfer bands and vibrational OH, H 2 O, and SO 4 overtone and combination bands are assigned to the visible/near-infrared reflectance spectra. Presentation and characterization of these Fe-sulfate thermal emission and visible/near-infrared reflectance spectra will enable the specific chemical environments to be determined when individual Fe-sulfate minerals are identified.
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Mid-infrared emission spectroscopy and visible/near-infrared reflectance spectroscopy of Fe-sulfate minerals
American Mineralogist, 2014Co-Authors: Melissa D. Lane, Penelope L. King, Stanley A. Mertzman, Takahiro Hiroi, M. Darby Dyar, Janice L. Bishop, David L Bish, A. Deanne RogersAbstract:Sulfate minerals are important indicators for aqueous geochemical environments. The geology and mineralogy of Mars have been studied through the use of various remote-sensing techniques, including thermal (mid-infrared) emission and visible/near-infrared reflectance spectroscopies. Spectral analyses of spacecraft data (from orbital and landed missions) using these techniques have indicated the presence of sulfate minerals on Mars, including Fe-rich Sulfates on the iron-rich planet. Each individual Fe-sulfate mineral can be used to constrain bulk chemistry and lends more information about the specific formational environment [e.g., Fe 2+ Sulfates are typically more water soluble than Fe 3+ Sulfates and their presence would imply a water-limited (and lower Eh) environment; Fe 3+ Sulfates form over a range of hydration levels and indicate further oxidation (biological or abiological) and increased acidification]. To enable better interpretation of past and future terrestrial or planetary data sets, with respect to the Fe-Sulfates, we present a comprehensive collection of mid-infrared thermal emission (2000 to 220 cm −1 ; 5–45 μm) and visible/near-infrared (0.35–5 μm) spectra of 21 different ferrous- and ferric-iron sulfate minerals. Mid-infrared vibrational modes (for SO 4 , OH, H 2 O) are assigned to each thermal emissivity spectrum, and the electronic excitation and transfer bands and vibrational OH, H 2 O, and SO 4 overtone and combination bands are assigned to the visible/near-infrared reflectance spectra. Presentation and characterization of these Fe-sulfate thermal emission and visible/near-infrared reflectance spectra will enable the specific chemical environments to be determined when individual Fe-sulfate minerals are identified.
Stefan A Wudy - One of the best experts on this subject based on the ideXlab platform.
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simultaneous quantification of cholesterol sulfate androgen Sulfates and progestagen Sulfates in human serum by lc ms ms
Journal of Lipid Research, 2015Co-Authors: Alberto Sanchezguijo, Michaela F Hartmann, Heiko Traupe, Stefan A WudyAbstract:Steroids are primarily present in human fl uids in their sulfated forms. Profi ling of these compounds is impor- tant from both diagnostic and physiological points of view . Here, we present a novel method for the quantifi cation of 11 intact steroid Sulfates in human serum by LC-MS/MS. The compounds analyzed in our method, some of which are quan- tifi ed for the fi rst time in blood, include cholesterol sulfate, pregnenolone sulfate, 17-hydroxy-pregnenolone sulfate, 16- -hydroxy-dehydroepiandrosterone sulfate, dehydroepi- androsterone sulfate, androstenediol sulfate, androsterone sulfate, epiandrosterone sulfate, testosterone sulfate, epites- tosterone sulfate, and dihydrotestosterone sulfate. The assay was conceived to quantify sulfated steroids in a broad range of concentrations, requiring only 300 l of serum. The method has been validated and its performance was studied at three quality controls, selected for each compound accord- ing to its physiological concentration. The assay showed good linearity (R 2 > 0.99) and recovery for all the compounds, with limits of quantifi cation ranging between 1 and 80 ng/ml. Averaged intra-day and between-day precisions (coeffi cient of variation) and accuracies (relative errors) were below 10%. The method has been successfully applied to study the sul- fated steroidome in diseases such as steroid sulfatase defi - ciency, proving its diagnostic value. This is, to our best knowledge, the most comprehensive method available for the quantifi cation of sulfated steroids in human blood. — S a�nchez-Guijo, A., V. Oji, M. F. Hartmann, H. Traupe, and S. A. Wudy. Simultaneous quantifi cation of cholesterol sul- fate, androgen Sulfates, and progestagen Sulfates in human serum by LC-MS/MS. J. Lipid Res. 2015. 56: 1843-1851. Abbreviations: ACN, acetonitrile; AnDiolS, 5-androsten-3 ,17 - diol-3-sulfate (androstenediol sulfate); AnS, 5 -androstan-3 -ol-17- one-3-sulfate (androsterone sulfate); CS, 5-cholesten-3 -ol-3-sulfate (cholesterol sulfate); CV, coeffi cient of variation; DHEAS, 5-androsten- 3 -ol-17-one-3-sulfate (dehydroepiandrosterone sulfate); DHTS, 5 - androstan-17 -ol-3-one-17-sulfate (dihydrotestosterone sulfate); epiAnS, 5 -androstan-3 -ol-17-one-3-sulfate (epiandrosterone sulfate); E1S, estrone sulfate; E2S, estradiol sulfate; E3S, estriol sulfate; eTS, 4- androsten-17 -ol-3-one-17-sulfate (epitestosterone sulfate); IS, inter- nal standard; LOD, limit of detection; LOQ, limit of quantifi cation; MeOH, methanol; 16OHDHEAS, 5-androsten-3 ,16 -diol-17-one-3- sulfate (16- -hydroxy-dehydroepiandrosterone sulfate); 17OHPregS, 5-pregnen-3 ,17 -diol-20-one-3-sulfate (17-hydroxy-pregnenolone sulfate); PregS, 5-pregnen-3 -ol-20-one-3-sulfate; QC, quality control sample; RE, relative error; RXLI, recessive X-linked ichthyosis; STS, steroid sulfatase; TS, 4-androsten-17 -ol-3-one-17-sulfate (testosterone sulfate ).
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Simultaneous quantification of cholesterol sulfate, androgen Sulfates, and progestagen Sulfates in human serum by LC-MS/MS.
Journal of Lipid Research, 2015Co-Authors: Alberto Sánchez-guijo, Michaela F Hartmann, Heiko Traupe, Stefan A WudyAbstract:Steroids are primarily present in human fl uids in their sulfated forms. Profi ling of these compounds is impor- tant from both diagnostic and physiological points of view . Here, we present a novel method for the quantifi cation of 11 intact steroid Sulfates in human serum by LC-MS/MS. The compounds analyzed in our method, some of which are quan- tifi ed for the fi rst time in blood, include cholesterol sulfate, pregnenolone sulfate, 17-hydroxy-pregnenolone sulfate, 16- -hydroxy-dehydroepiandrosterone sulfate, dehydroepi- androsterone sulfate, androstenediol sulfate, androsterone sulfate, epiandrosterone sulfate, testosterone sulfate, epites- tosterone sulfate, and dihydrotestosterone sulfate. The assay was conceived to quantify sulfated steroids in a broad range of concentrations, requiring only 300 l of serum. The method has been validated and its performance was studied at three quality controls, selected for each compound accord- ing to its physiological concentration. The assay showed good linearity (R 2 > 0.99) and recovery for all the compounds, with limits of quantifi cation ranging between 1 and 80 ng/ml. Averaged intra-day and between-day precisions (coeffi cient of variation) and accuracies (relative errors) were below 10%. The method has been successfully applied to study the sul- fated steroidome in diseases such as steroid sulfatase defi - ciency, proving its diagnostic value. This is, to our best knowledge, the most comprehensive method available for the quantifi cation of sulfated steroids in human blood. — S a�nchez-Guijo, A., V. Oji, M. F. Hartmann, H. Traupe, and S. A. Wudy. Simultaneous quantifi cation of cholesterol sul- fate, androgen Sulfates, and progestagen Sulfates in human serum by LC-MS/MS. J. Lipid Res. 2015. 56: 1843-1851. Abbreviations: ACN, acetonitrile; AnDiolS, 5-androsten-3 ,17 - diol-3-sulfate (androstenediol sulfate); AnS, 5 -androstan-3 -ol-17- one-3-sulfate (androsterone sulfate); CS, 5-cholesten-3 -ol-3-sulfate (cholesterol sulfate); CV, coeffi cient of variation; DHEAS, 5-androsten- 3 -ol-17-one-3-sulfate (dehydroepiandrosterone sulfate); DHTS, 5 - androstan-17 -ol-3-one-17-sulfate (dihydrotestosterone sulfate); epiAnS, 5 -androstan-3 -ol-17-one-3-sulfate (epiandrosterone sulfate); E1S, estrone sulfate; E2S, estradiol sulfate; E3S, estriol sulfate; eTS, 4- androsten-17 -ol-3-one-17-sulfate (epitestosterone sulfate); IS, inter- nal standard; LOD, limit of detection; LOQ, limit of quantifi cation; MeOH, methanol; 16OHDHEAS, 5-androsten-3 ,16 -diol-17-one-3- sulfate (16- -hydroxy-dehydroepiandrosterone sulfate); 17OHPregS, 5-pregnen-3 ,17 -diol-20-one-3-sulfate (17-hydroxy-pregnenolone sulfate); PregS, 5-pregnen-3 -ol-20-one-3-sulfate; QC, quality control sample; RE, relative error; RXLI, recessive X-linked ichthyosis; STS, steroid sulfatase; TS, 4-androsten-17 -ol-3-one-17-sulfate (testosterone sulfate ).
A. Deanne Rogers - One of the best experts on this subject based on the ideXlab platform.
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Mid-infrared emission spectroscopy and visible/near-infrared reflectance spectroscopy of Fe-sulfate minerals
American Mineralogist, 2014Co-Authors: Melissa D. Lane, Penelope L. King, Stanley A. Mertzman, Takahiro Hiroi, M. Darby Dyar, Janice L. Bishop, David L Bish, A. Deanne RogersAbstract:Sulfate minerals are important indicators for aqueous geochemical environments. The geology and mineralogy of Mars have been studied through the use of various remote-sensing techniques, including thermal (mid-infrared) emission and visible/near-infrared reflectance spectroscopies. Spectral analyses of spacecraft data (from orbital and landed missions) using these techniques have indicated the presence of sulfate minerals on Mars, including Fe-rich Sulfates on the iron-rich planet. Each individual Fe-sulfate mineral can be used to constrain bulk chemistry and lends more information about the specific formational environment [e.g., Fe 2+ Sulfates are typically more water soluble than Fe 3+ Sulfates and their presence would imply a water-limited (and lower Eh) environment; Fe 3+ Sulfates form over a range of hydration levels and indicate further oxidation (biological or abiological) and increased acidification]. To enable better interpretation of past and future terrestrial or planetary data sets, with respect to the Fe-Sulfates, we present a comprehensive collection of mid-infrared thermal emission (2000 to 220 cm −1 ; 5–45 μm) and visible/near-infrared (0.35–5 μm) spectra of 21 different ferrous- and ferric-iron sulfate minerals. Mid-infrared vibrational modes (for SO 4 , OH, H 2 O) are assigned to each thermal emissivity spectrum, and the electronic excitation and transfer bands and vibrational OH, H 2 O, and SO 4 overtone and combination bands are assigned to the visible/near-infrared reflectance spectra. Presentation and characterization of these Fe-sulfate thermal emission and visible/near-infrared reflectance spectra will enable the specific chemical environments to be determined when individual Fe-sulfate minerals are identified.
Deanne A Rogers - One of the best experts on this subject based on the ideXlab platform.
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mid infrared emission spectroscopy and visible near infrared reflectance spectroscopy of fe sulfate minerals
American Mineralogist, 2015Co-Authors: Melissa D. Lane, Penelope L. King, Stanley A. Mertzman, Darby M Dyar, Takahiro Hiroi, Janice L. Bishop, David L Bish, Deanne A RogersAbstract:Sulfate minerals are important indicators for aqueous geochemical environments. The geology and mineralogy of Mars have been studied through the use of various remote-sensing techniques, including thermal (mid-infrared) emission and visible/near-infrared reflectance spectroscopies. Spectral analyses of spacecraft data (from orbital and landed missions) using these techniques have indicated the presence of sulfate minerals on Mars, including Fe-rich Sulfates on the iron-rich planet. Each individual Fe-sulfate mineral can be used to constrain bulk chemistry and lends more information about the specific formational environment [e.g., Fe 2+ Sulfates are typically more water soluble than Fe 3+ Sulfates and their presence would imply a water-limited (and lower Eh) environment; Fe 3+ Sulfates form over a range of hydration levels and indicate further oxidation (biological or abiological) and increased acidification]. To enable better interpretation of past and future terrestrial or planetary data sets, with respect to the Fe-Sulfates, we present a comprehensive collection of mid-infrared thermal emission (2000 to 220 cm −1 ; 5–45 μm) and visible/near-infrared (0.35–5 μm) spectra of 21 different ferrous- and ferric-iron sulfate minerals. Mid-infrared vibrational modes (for SO 4 , OH, H 2 O) are assigned to each thermal emissivity spectrum, and the electronic excitation and transfer bands and vibrational OH, H 2 O, and SO 4 overtone and combination bands are assigned to the visible/near-infrared reflectance spectra. Presentation and characterization of these Fe-sulfate thermal emission and visible/near-infrared reflectance spectra will enable the specific chemical environments to be determined when individual Fe-sulfate minerals are identified.