引用本文:
Xiang Qin Lin, Zhi Xiang Zhang, Wan Qun Hu. Concave cell design for FTIR measurements[J]. Chinese Chemical Letters,
2011, 22(11): 1339-1342.
doi:
10.1016/j.cclet.2011.05.038
Citation: Xiang Qin Lin, Zhi Xiang Zhang, Wan Qun Hu. Concave cell design for FTIR measurements[J]. Chinese Chemical Letters, 2011, 22(11): 1339-1342. doi: 10.1016/j.cclet.2011.05.038
Citation: Xiang Qin Lin, Zhi Xiang Zhang, Wan Qun Hu. Concave cell design for FTIR measurements[J]. Chinese Chemical Letters, 2011, 22(11): 1339-1342. doi: 10.1016/j.cclet.2011.05.038
Concave cell design for FTIR measurements
摘要:
Wedged and V-shaped cells have advantages on depressing strong absorption bands and keeping the photo windows wide open without absorption block. Alternatively, this work presents a concave cell design, which is constructed by a plano-convex CaF2 lens in combination with a flat plate. Mathematical equations have been provided for data treatment with Matlab programs. The result indicates that the concave cell has advantages similar to the V-shaped cell. Reflection-absorption measurements of ethanol have been conducted on the cell in mid-IR region for demonstration. The spectrum obtained from the concave cell can easily be interpreted to regenerate its normal spectrum, which is fitting well with the spectrum taken in a conventional thin-layer cell. The concave cell is easier to construct and more convenient to operate, willing to have popular usages.
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关键词:
- Infrared
- / Concave
- / Spectroscopic cell
- / Reflection-absorption
- / Ethanol
English
Concave cell design for FTIR measurements
Abstract:
Wedged and V-shaped cells have advantages on depressing strong absorption bands and keeping the photo windows wide open without absorption block. Alternatively, this work presents a concave cell design, which is constructed by a plano-convex CaF2 lens in combination with a flat plate. Mathematical equations have been provided for data treatment with Matlab programs. The result indicates that the concave cell has advantages similar to the V-shaped cell. Reflection-absorption measurements of ethanol have been conducted on the cell in mid-IR region for demonstration. The spectrum obtained from the concave cell can easily be interpreted to regenerate its normal spectrum, which is fitting well with the spectrum taken in a conventional thin-layer cell. The concave cell is easier to construct and more convenient to operate, willing to have popular usages.
-
Key words:
- Infrared
- / Concave
- / Spectroscopic cell
- / Reflection-absorption
- / Ethanol
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