Optical detection of concentrations for mixed acid: HF and HNO3

Gumin Kang; Kyoungsik Kim

doi:10.1117/12.809955

Optical detection of concentrations for mixed acid: HF and HNO₃

Gumin Kang, Kyoungsik Kim

Department of Mechanical Engineering

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

Mixed acid, which consist of HF and HNO₃, is used as a good etchant for silicon dioxide in the wet etching and pickling process of stainless steel. The optical detection of concentration for such mixed acids is crucial to optimize and cut costs in the manufacturing process. Optical detection in the IR regime has been utilized to measure the concentration of the mixed acid for HF and HNO₃, because that has several strong sorption peaks, which is contributed by vibrational mode of each acid molecular in this spectrum. In this research, we observed the concentrations of mixed acid to consist of HF and HNO₃, as we measured the absorption intensity of OH- stretch and NO3^- stretch band by optical spectroscopy. The concentration range of HF over 1.5-3 wt% and that of HNO₃ over 2-10 wt% were studied in room temperature.

Original language	English
Article number	71832A
Journal	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume	7183
DOIs	https://doi.org/10.1117/12.809955
Publication status	Published - 2009
Event	Multiphoton Microscopy in the Biomedical Sciences IX - San Jose, CA, United States Duration: 2009 Jan 25 → 2009 Jan 27

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Atomic and Molecular Physics, and Optics
Radiology Nuclear Medicine and imaging

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title = "Optical detection of concentrations for mixed acid: HF and HNO3",

abstract = "Mixed acid, which consist of HF and HNO3, is used as a good etchant for silicon dioxide in the wet etching and pickling process of stainless steel. The optical detection of concentration for such mixed acids is crucial to optimize and cut costs in the manufacturing process. Optical detection in the IR regime has been utilized to measure the concentration of the mixed acid for HF and HNO3, because that has several strong sorption peaks, which is contributed by vibrational mode of each acid molecular in this spectrum. In this research, we observed the concentrations of mixed acid to consist of HF and HNO3, as we measured the absorption intensity of OH- stretch and NO3- stretch band by optical spectroscopy. The concentration range of HF over 1.5-3 wt% and that of HNO3 over 2-10 wt% were studied in room temperature.",

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T1 - Optical detection of concentrations for mixed acid

T2 - Multiphoton Microscopy in the Biomedical Sciences IX

AU - Kang, Gumin

AU - Kim, Kyoungsik

PY - 2009

Y1 - 2009

N2 - Mixed acid, which consist of HF and HNO3, is used as a good etchant for silicon dioxide in the wet etching and pickling process of stainless steel. The optical detection of concentration for such mixed acids is crucial to optimize and cut costs in the manufacturing process. Optical detection in the IR regime has been utilized to measure the concentration of the mixed acid for HF and HNO3, because that has several strong sorption peaks, which is contributed by vibrational mode of each acid molecular in this spectrum. In this research, we observed the concentrations of mixed acid to consist of HF and HNO3, as we measured the absorption intensity of OH- stretch and NO3- stretch band by optical spectroscopy. The concentration range of HF over 1.5-3 wt% and that of HNO3 over 2-10 wt% were studied in room temperature.

AB - Mixed acid, which consist of HF and HNO3, is used as a good etchant for silicon dioxide in the wet etching and pickling process of stainless steel. The optical detection of concentration for such mixed acids is crucial to optimize and cut costs in the manufacturing process. Optical detection in the IR regime has been utilized to measure the concentration of the mixed acid for HF and HNO3, because that has several strong sorption peaks, which is contributed by vibrational mode of each acid molecular in this spectrum. In this research, we observed the concentrations of mixed acid to consist of HF and HNO3, as we measured the absorption intensity of OH- stretch and NO3- stretch band by optical spectroscopy. The concentration range of HF over 1.5-3 wt% and that of HNO3 over 2-10 wt% were studied in room temperature.

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Optical detection of concentrations for mixed acid: HF and HNO₃

Abstract

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