Title :
Measurement of mixed acid concentrations using Raman spectroscopy
Author :
Gumin Kang ; Kim, Kyoungsik
Author_Institution :
Sch. of Mech. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
Mixed acids which consists of HF, HNO3 are used as good etchant for pickling process of stainless steel and of HNO3, CH3COOH, H3PO4 are used as etchant for aluminum. The optical detection of concentration for such mixed acids is important to optimize and cut costs in the acid pickling process. The Raman spectroscopy technique has been employed to measure the concentration of mixed acid component within the aqueous phase.
Keywords :
Fourier transform spectroscopy; Raman spectra; Raman spectroscopy; calibration; hydrogen compounds; organic compounds; spectrochemical analysis; Fourier transform Raman spectroscopy; H3PO4; HF; HNO3; aluminum; aqueous phase; calibration model; chemometrics technique; concentration optical detection; etchant; mixed acid concentration measurement; mixed acids; multivariate analysis method; optical detection; pickling process; stainless steel; Aluminum; Cost function; Etching; Hafnium; Optical detectors; Phase measurement; Pickling; Raman scattering; Spectroscopy; Steel;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5324973
