Photoacoustic study of CO2-laser coincidences with absorption of some organic solvent vapours
Abstract
Detection of specific molecules in the atmosphere is motivated by the need for monitoring the emission of industrial pollutants. CO2-laser photoacoustic (PA) spectroscopy was used here to obtain coincidence spectra of the vapours of three organic solvents: trichloroethylene (TCE), benzene, and dioxan. Spectra of coincidences were obtained as a function of total pressure, adding dry air to the vapour of the solvents up to 1000 mbar. A narrow cavity photoacoustic cell with window acoustic buffers was built for improved sensitivity, and is reported here. The vapour molecules studied do have some significant absorption in the CO2-laser region, or close to it, but that fact does not necessarily lead to usable coincidences with the narrow laser lines. The results reveal several prominent coincidences that can be used for practical purposes, especially in the case of trichloroethylene. (C) 2003 Elsevier B.V. All rights reserved.
Keywords:
CO2 laser / photoacoustic spectroscopy / trichloroethylene / benzene / dioxanSource:
Analytica Chimica Acta, 2004, 505, 1, 67-71Note:
- 3rd Aegean Analytical Chemistry Days, Sep 29-Oct 03, 2002, Levos, Greece
DOI: 10.1016/S0003-2670(03)00572-5
ISSN: 0003-2670
WoS: 000189102800010
Scopus: 2-s2.0-1042286384
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VinčaTY - JOUR AU - Radak, Bojan AU - Petkovska, MT AU - Trtica, Milan AU - Miljanić, Šćepan S. AU - Petkovska, Ljubica T. PY - 2004 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6404 AB - Detection of specific molecules in the atmosphere is motivated by the need for monitoring the emission of industrial pollutants. CO2-laser photoacoustic (PA) spectroscopy was used here to obtain coincidence spectra of the vapours of three organic solvents: trichloroethylene (TCE), benzene, and dioxan. Spectra of coincidences were obtained as a function of total pressure, adding dry air to the vapour of the solvents up to 1000 mbar. A narrow cavity photoacoustic cell with window acoustic buffers was built for improved sensitivity, and is reported here. The vapour molecules studied do have some significant absorption in the CO2-laser region, or close to it, but that fact does not necessarily lead to usable coincidences with the narrow laser lines. The results reveal several prominent coincidences that can be used for practical purposes, especially in the case of trichloroethylene. (C) 2003 Elsevier B.V. All rights reserved. T2 - Analytica Chimica Acta T1 - Photoacoustic study of CO2-laser coincidences with absorption of some organic solvent vapours VL - 505 IS - 1 SP - 67 EP - 71 DO - 10.1016/S0003-2670(03)00572-5 ER -
@article{ author = "Radak, Bojan and Petkovska, MT and Trtica, Milan and Miljanić, Šćepan S. and Petkovska, Ljubica T.", year = "2004", abstract = "Detection of specific molecules in the atmosphere is motivated by the need for monitoring the emission of industrial pollutants. CO2-laser photoacoustic (PA) spectroscopy was used here to obtain coincidence spectra of the vapours of three organic solvents: trichloroethylene (TCE), benzene, and dioxan. Spectra of coincidences were obtained as a function of total pressure, adding dry air to the vapour of the solvents up to 1000 mbar. A narrow cavity photoacoustic cell with window acoustic buffers was built for improved sensitivity, and is reported here. The vapour molecules studied do have some significant absorption in the CO2-laser region, or close to it, but that fact does not necessarily lead to usable coincidences with the narrow laser lines. The results reveal several prominent coincidences that can be used for practical purposes, especially in the case of trichloroethylene. (C) 2003 Elsevier B.V. All rights reserved.", journal = "Analytica Chimica Acta", title = "Photoacoustic study of CO2-laser coincidences with absorption of some organic solvent vapours", volume = "505", number = "1", pages = "67-71", doi = "10.1016/S0003-2670(03)00572-5" }
Radak, B., Petkovska, M., Trtica, M., Miljanić, Š. S.,& Petkovska, L. T.. (2004). Photoacoustic study of CO2-laser coincidences with absorption of some organic solvent vapours. in Analytica Chimica Acta, 505(1), 67-71. https://doi.org/10.1016/S0003-2670(03)00572-5
Radak B, Petkovska M, Trtica M, Miljanić ŠS, Petkovska LT. Photoacoustic study of CO2-laser coincidences with absorption of some organic solvent vapours. in Analytica Chimica Acta. 2004;505(1):67-71. doi:10.1016/S0003-2670(03)00572-5 .
Radak, Bojan, Petkovska, MT, Trtica, Milan, Miljanić, Šćepan S., Petkovska, Ljubica T., "Photoacoustic study of CO2-laser coincidences with absorption of some organic solvent vapours" in Analytica Chimica Acta, 505, no. 1 (2004):67-71, https://doi.org/10.1016/S0003-2670(03)00572-5 . .