Micro-FTIR imaging: an advanced method for the determination of CO2 and H2O concentration gradients in silicate glasses
Micro-FTIR imaging: an advanced method for the determination of CO2 and H2O concentration gradients in silicate glasses
复制标题
微型 FTIR 成像:一种测定硅酸盐玻璃中 CO2 和 H2O 浓度梯度的先进方法
DOI:
10.1127/0935-1221/2013/0025-2299
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发表时间:
2013
影响因子:
2.1
通讯作者:
Marxer
中科院分区:
文献类型:
--
作者:
Marxer
Glass samples of diffusion couple experiments with rhyolitic to hawaiitic melts were analyzed by FTIR microscopy with a common single element and a 64 × 64 element focal plane array detector to obtain total CO2and H2O concentration distance profiles. In contrast to the single element detector, the array detector facilitates mid-infrared spectral imaging with a resolution on a micrometer scale. The imaged sample information was converted to multiple parallel concentration distance profiles, using the absorption band areas of the dissolved volatile species. The bulk CO2and H2O diffusivities from measurements with different array resolutions range from logD= −11.03 to −11.33 m2·s−1at 500 MPa and 1523–1623 K. All determined diffusion coefficients are within the error identical to single element detector analysis. Further test measurements were performed on a partially degassed, vesiculated phonolite in order to visualize the concentration of H2O around bubbles. Both applications confirm that FTIR imaging is a convenient tool to investigate the spatial distribution of CO2and H2O in silicate glasses, especially in terms of diffusion-related studies.
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DOI:
--
发表时间:
2007
期刊:
Chemical Geology 242
影响因子:
--
作者:
黒川要一;迫田和彰;Potuzak M.;Nichols A. R. L.
通讯作者:
Nichols A. R. L.
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
K. E. Lapham;J. Holloway;J. Delaney
通讯作者:
J. Delaney
影响因子:
3.2
作者:
Ippolito, SB;Goldberg, BB;Unl端, MS
通讯作者:
Unl端, MS
影响因子:
3.1
作者:
M. Sierralta;M. Nowak;H. Keppler
通讯作者:
H. Keppler
影响因子:
3.1
作者:
M. Nowak;S. Cichy;R. Botcharnikov;N. Walker;Willi Hurkuck
通讯作者:
Willi Hurkuck