Study of aerosol sample interaction with dc plasma in the presence of oscillating magnetic field
Апстракт
Oscillating magnetic field was used to Study the efficiency of the aerosol sample introduction into the dc plasma. At atmospheric plasmas, the effect of magnetic field is reduced to Lorentz forces on the current carrying plasma, which produces motion of the plasma. The motion velocity of dc plasma caused by oscillating magnetic field was correlated to spectral emission enhancement of analytes introduced as aerosols. Emission enhancement is the consequence of the reduced barrier to introduction of analyte species and aerosol particles into the hot plasma region. Two hypotheses described in the literature for the origin of the barrier are considered: (i) barrier induced by temperature field is based upon the thermophoretic forces on the aerosol particles when their radius is comparable to the molecular free path in the surrounding gas and, (ii) barrier induced by radial electric field, recently described, that originates from gradients of charged particles in radial direction. Correlatio...n between ionization energy of the analyte atoms with experimental emission enhancement obtained by the use of oscillating magnetic field indicates that mechanism (ii) based upon the radial electric field is predominant. The ultimate emission enhancement and possible analytical advantage is discussed. (c) 2005 Elsevier B.V. All rights reserved.
Кључне речи:
dc arc with aerosol supply / plasma-magnetic field interaction / demixing effect / emission spectroscopy / analytical applicationИзвор:
Spectrochimica Acta. Part B: Atomic Spectroscopy, 2005, 60, 11, 1450-1457
DOI: 10.1016/j.sab.2005.09.001
ISSN: 0584-8547
WoS: 000234044300008
Scopus: 2-s2.0-28044469650
Колекције
Институција/група
VinčaTY - JOUR AU - Stoiljković, Milovan AU - Pavlović, Mirjana S. AU - Savović, Jelena AU - Kumanovic, M AU - Maninkovic, M PY - 2005 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2956 AB - Oscillating magnetic field was used to Study the efficiency of the aerosol sample introduction into the dc plasma. At atmospheric plasmas, the effect of magnetic field is reduced to Lorentz forces on the current carrying plasma, which produces motion of the plasma. The motion velocity of dc plasma caused by oscillating magnetic field was correlated to spectral emission enhancement of analytes introduced as aerosols. Emission enhancement is the consequence of the reduced barrier to introduction of analyte species and aerosol particles into the hot plasma region. Two hypotheses described in the literature for the origin of the barrier are considered: (i) barrier induced by temperature field is based upon the thermophoretic forces on the aerosol particles when their radius is comparable to the molecular free path in the surrounding gas and, (ii) barrier induced by radial electric field, recently described, that originates from gradients of charged particles in radial direction. Correlation between ionization energy of the analyte atoms with experimental emission enhancement obtained by the use of oscillating magnetic field indicates that mechanism (ii) based upon the radial electric field is predominant. The ultimate emission enhancement and possible analytical advantage is discussed. (c) 2005 Elsevier B.V. All rights reserved. T2 - Spectrochimica Acta. Part B: Atomic Spectroscopy T1 - Study of aerosol sample interaction with dc plasma in the presence of oscillating magnetic field VL - 60 IS - 11 SP - 1450 EP - 1457 DO - 10.1016/j.sab.2005.09.001 ER -
@article{ author = "Stoiljković, Milovan and Pavlović, Mirjana S. and Savović, Jelena and Kumanovic, M and Maninkovic, M", year = "2005", abstract = "Oscillating magnetic field was used to Study the efficiency of the aerosol sample introduction into the dc plasma. At atmospheric plasmas, the effect of magnetic field is reduced to Lorentz forces on the current carrying plasma, which produces motion of the plasma. The motion velocity of dc plasma caused by oscillating magnetic field was correlated to spectral emission enhancement of analytes introduced as aerosols. Emission enhancement is the consequence of the reduced barrier to introduction of analyte species and aerosol particles into the hot plasma region. Two hypotheses described in the literature for the origin of the barrier are considered: (i) barrier induced by temperature field is based upon the thermophoretic forces on the aerosol particles when their radius is comparable to the molecular free path in the surrounding gas and, (ii) barrier induced by radial electric field, recently described, that originates from gradients of charged particles in radial direction. Correlation between ionization energy of the analyte atoms with experimental emission enhancement obtained by the use of oscillating magnetic field indicates that mechanism (ii) based upon the radial electric field is predominant. The ultimate emission enhancement and possible analytical advantage is discussed. (c) 2005 Elsevier B.V. All rights reserved.", journal = "Spectrochimica Acta. Part B: Atomic Spectroscopy", title = "Study of aerosol sample interaction with dc plasma in the presence of oscillating magnetic field", volume = "60", number = "11", pages = "1450-1457", doi = "10.1016/j.sab.2005.09.001" }
Stoiljković, M., Pavlović, M. S., Savović, J., Kumanovic, M.,& Maninkovic, M.. (2005). Study of aerosol sample interaction with dc plasma in the presence of oscillating magnetic field. in Spectrochimica Acta. Part B: Atomic Spectroscopy, 60(11), 1450-1457. https://doi.org/10.1016/j.sab.2005.09.001
Stoiljković M, Pavlović MS, Savović J, Kumanovic M, Maninkovic M. Study of aerosol sample interaction with dc plasma in the presence of oscillating magnetic field. in Spectrochimica Acta. Part B: Atomic Spectroscopy. 2005;60(11):1450-1457. doi:10.1016/j.sab.2005.09.001 .
Stoiljković, Milovan, Pavlović, Mirjana S., Savović, Jelena, Kumanovic, M, Maninkovic, M, "Study of aerosol sample interaction with dc plasma in the presence of oscillating magnetic field" in Spectrochimica Acta. Part B: Atomic Spectroscopy, 60, no. 11 (2005):1450-1457, https://doi.org/10.1016/j.sab.2005.09.001 . .