Selected Recent Publications

Assoc. Prof. Dr. Michaela Ponta

Books

 

•     Environmental Monitoring in the Romanian Baia-Mare Mining Region, 2005 (English) C. Roman, E. Cordos, M. Ponta, V. Viman, A. Vogt 

Jagellonian University Press, Monography sponsored by the International Center for Studies and Research in Biomedicine in Luxemburg, p. 49-69, ISBN 83-233-1978-2.

•     Analiza prin spectrometrie atomică (Romanian)

E.A. Cordoş, T. Frenţiu, Ana-Maria Rusu, Michaela Ponta, A. Fodor,

Ed. Institutului Naţional de Optoelectronică, Bucureşti, 1998, ISBN 973-98742-0-7.

•     Analiza prin spectrometrie de absorbtie moleculară în ultraviolet-vizibil (Romanian) E. A. Cordos. T. Frentiu, A.M. Rusu, M. Ponta, E. Darvasi 

Ed. Institutului National de Optoelectronică, Bucuresti, 2001, ISBN 973-98742-7-4.

•     Spectrometria analitică în plasmă (Romanian)

E. A. Cordos, T. Frentiu, M. Ponta, C. Tanaselia, M. Senila 

Ed. Institutului National de Optoelectronică, Bucuresti, 2007, ISBN 978-973-88109-1-4.

•     Poluarea şi monitorizarea mediului (Romanian) M. Ponta, E. A. Cordos

Ed. Universităţii Transilvania Braşov, 2002, Seria Envedu, p. 146-165. ISSN 1584-0506, ISBN 973-635-089-4.

•     Pollution and environment monitoring (English)   M.. Ponta, E. A. Cordos

Ed. Academiei Române, 2004, Editors: Ian Colbeck, C. Drăghici, D. Perniu,  p. 202-228. ISBN 973-27-1169-8.

ISI Quoted  Journals
 
 
 
 

 
  • Comparison between Tip-Ring Electrode and Single Tip Electrode Geometries for An Atmospheric-Pressure Capacitively Coupled Plasma, E. A. Cordoş, T. Frenţiu, A. Fodor, M. Ponta, A.M. Rusu, S. Negoescu. ACH Models in Chemistry (Budapest), 1995, 132, 313.
  • Analytical Performances for A Radiofrequency Capacitively Coupled Plasma, T. Frenţiu, A.M.Rusu, M. Ponta, S. D. Anghel, E. A. Cordoş. Fresenius’ Journal of Analytical Chemistry, 1996, 355, 254.
  • Analytical Characterization of a Capacitively Coupled Plasma Torch with Central Tube Electrode, E.A. Cordoş, T. Frenţiu, A.M. Rusu, S.D. Anghel, A. Fodor, M. Ponta.Talanta, 1999, 48, 827 – 837. 
  • Cadmium determination in sedimented dust by atomic emission spectrometry with a new radio-frequency capacitively coupled plasma source,  T. Frenţiu, M. Ponta, A. Rusu, S.D. Anghel, A. Simon, E.A. Cordoş. Anal. Lett., 2000, 33, 323-335.
  • Traces of Cu, Mn and Zn in Aquatic Animals and Sediments from the Cris River Basin - West Romania. Part I: Statistical Evaluation of Data Obtained by Atomic Emission Spectrometry with Radiofrequency Capacitively Coupled Plasma Source and Flame Atomic Absorption Spectrometry, M. Ponta, T. Frentiu, A.M. Rusu, E.A. Cordos. Croat. Chem. Acta, 2002, 75 (1), 291-306.
  • Traces of Cu, Mn and Zn in Aquatic Animals, Water and Sediments from the Cris River Basin - West Romania. Part II: Distribution Study, M. Ponta, T. Frentiu, A. Sarkany-Kiss, E.A. Cordos. Croat. Chem. Acta, 2002, 75 (1), 307-317.
  • A simultaneous spectrometer with photodiode array detector and low power radiofrequency capacitively coupled plasma source, T. Frentiu, E. Darvasi, S. D. Anghel, A. Simon, M. Ponta, E.A. Cordos. Chem. Anal., 2002, 47, 725.
  • Statistical evaluation of Cu, Mn and Zn determinations in biological samples by Radiofrequency capacitively coupled plasma atomic emission spectrometry using the Bland and Altman test, T. Frentiu, M. Ponta, S. D. Anghel, A. Simon, I. Marginean, E. A. Cordos. Microchim. Acta, 2003, 143, 245-254.
  • Characterisation of the rivers system in the mining and industrial area of Baia Mare, Romania, E. Cordos, R. Rautiu, C. Roman, M. Ponta, T. Frentiu, A. Sarkany, L. Fodorpataki, K. Macalik, C. McCormick, D. Weiss. European Journal of Mineral Processing and Environmental Protection, 2003, Vol.3, No.3, p.324-335. 
  • Investigation of Medium Power Radiofrequency Capacitively Coupled Plasmas and Their Application to Atomic Emission Spectrometry for the Determination of Aluminium in Water Samples, T.Frentiu,  M. Ponta, S. D. Anghel, A. Simon, A.M. Incze, E.A. Cordos.  Microchim. Acta, 2004, 147 (1-2), 93-103.
  • Optimisation of Analytical Parameters in Inorganic Arsenic (III and V) Speciation by Hydride Generation Using L-cysteine as prereducing agent in diluted HCl medium, E.A. Cordos, T. Frentiu, M. Ponta, B. Abraham, I. Marginean. Chem. Spec. Bioavailab. 2006, 18(1), 1-9.
  • Distribution study of inorganic Arsenic (III) and (V) species in Soil and their mobility in the area of Baia-Mare, Romania, E.A. Cordos, T. Frentiu, M. Ponta, I. Marginean, B. Abraham, C. Roman. Chem. Spec. Bioavailab. 2006, 18(1), 11-25.
  • Profile distribution of As(III) and As(V) species in soil and groundwater in Bozanta area, T. Frentiu, C.N. Vlad, M. Ponta, C. Baciu, I. Kasler, E. Cordos. Chem. Pap. 2007, 61 (3), 186-193.
  • Interlaboratory study on Cu, Pb and Zn determination in soil by inductively coupled plasma optical emission spectrometry using the Bland and Altman test, T. Frentiu, M. Ponta, E. Levei, M. Senila, M. Ursu, E. Cordos. J. of Optoelectronics and Adv. Materials, 2007, 9(11), 3505-3513.
  • Evaluation of Soil Pollution with Copper, Lead, Zinc and Cadmium in the Mining Area Baia Mare, E. Cordos, C. Roman, M. Ponta, T. Frentiu, R. Rautiu, Revista de Chimie, 2007, 58(5), 470-474.
  • Assessment of aqua regia extractable and plan-available Pb content in polluted soil, E. Levei, M. Senila, C. Roman, M. Ponta, T. Frentiu, E. Cordos. Studia Universitatis Babes-Bolyai, CHEMIA, LIII, 3, 2008, 51-55.
  • Validation of the Tessier scheme for speciation of metals in soil using the Bland and Altman test, T. Frentiu, M. Ponta, E. Levei, E. Gheorghiu, I. Kasler, E. Cordos. Chem. Pap. 2008, 62 (1), 114-122.
  • Preliminary Study on Heavy Metals Contamination of Soil Using Solid Phase Speciation and the Influence on Groundwater in Bozanta Mare Area, Romania, T. Frentiu, M. Ponta, E. Levei, E. Gheorghiu, M. Benea, E. Cordos. Chem. Spec. Bioavailability, 2008, 20, 99-109.
  • Preliminary investigation of a medium power argon radiofrequency capacitively coupled plasma as atomization cell in atomic fluorescence spectrometry of cadmium, T. Frentiu, E. Darvasi, M. Senila, M. Ponta, E. Cordos. Talanta, 2008, 76(5), 1170-1176.  
  • Study of partitioning and dynamics of metals in contaminated soil using modified four-step BCR extraction procedure, T. Frentiu, M. Ponta, E. Levei, E. Cordos. Chem. Pap. 2009, 63 (2), 239-248.
  • Characterization of soil quality and mobility of Cd, Cu, Pb and Zn in the Baia Mare area Northwest Romania following the historical pollution, E. Levei, T. Frentiu, M. Ponta, M.  Senila, M. Miclean, C. Roman,  E. Cordos. Int. J. Environ. Anal. Chem., 2009, 89,635-649.
  • Qualitative assessment of heavy metals sources in pitcoal/biomass briquettes combustion using multivariate statistical analysis, T. Frentiu, M. Ponta, A. Mihaltan, E. Cordos, M. Frentiu, G. Lazaroiu, L. Traista, R. Indries.  J. of Optoelectronics and Adv. Materials, 2009, 11(5), 697-710.
  • The synergistic effect in coal/biomass blend briquettes combustion on elements behavior in bottom ash using ICP-OES, G. Lazaroiu, T. Frentiu, L. Mihaescu, A. Mihaltan, M. Ponta, M. Frentiu, E. Cordos. J. of Optoelectronics and Adv. Materials, 2009, 11(5), 713-721.
  • Evaluation of figures of merit for Zn determination in environmental and biological samples using EDL- excited AFS in a new radiofrequency capacitively coupled plasma. T. Frentiu, M. Ponta, M. Senila, A. Mihaltan, E. Darvasi, M. Frentiu, E. Cordos. J. Anal. At. Spectrom., 2010, 25, 739-742.
  • Discharge characteristics and non-spectral interferences on the emission of Ca species in a medium power radiofrequency capacitively coupled plasma source, T. Frentiu, M. Ponta, E. Darvasi, M. Frentiu, E. Cordos. Acta Chim. Slov. 2010, 57, 173-181.
  • Quenching of the OH and nitrogen molecular emission by methane addition in an Ar capacitively coupled plasma to remove spectral interference in lead determination by atomic fluorescence spectrometry, T. Frentiu, M. Ponta, A.I. Mihaltan, E. Darvasi, M. Frentiu, E. Cordos. Spectrochim. Acta B, 2010, 65, 565-570.
  • Mercury determination in non- and biodegradable materials by cold vapor capacitively coupled plasma microtorch atomic emission spectrometry, T. Frentiu, A.I. Mihaltan, M. Ponta, E. Darvasi, M. Frentiu, E. Cordos. J. Haz. Mat., 2011, 193, 65-69.
  • Low power capacitively coupled plasma microtorch for simultaneous multielemental determination by atomic emission using microspectrometers, T. Frentiu, D. Petreus, M. Senila, A.I. Mihaltan, E. Darvasi, M. Ponta, E. Plaian, E. Cordos. Microchem. J., 2011, 97,188-195.
  • A novel analytical system with a capacitively coupled plasma microtorch and a gold filament microcollector for the determination of total Hg in water by cold vapor atomic emission spectrometry, T. Frentiu, A.I. Mihaltan, E. Darvasi, M. Ponta, C. Roman, M. Frentiu, J. Anal. At. Spectrom., 2012, 27, 1753-1760.
  • Analytical capability of a medium power capacitively coupled plasma for the multielemental determination in multimineral/multivitamin preparations by atomic emission spectrometry, T. Frentiu, M. Ponta, E. Darvasi, M. Frentiu, E. Cordos, Food Chemistry, 2012, 134, 2447-2452.
  • Ionization of elements in medium power capacitively coupled argon plasma   torch with single and double ring electrodes, M. Ponta, M. Frenţiu, T. Frenţiu, Acta Chim. Slov., 2012, 59, 359 – 365.
  • Characterization and assessment of potential environmental risk of tailings stored in seven impoundments in the Aries river basin, Western Romania. E. Levei, T. Frentiu, M. Ponta, C. Tanaselia, G. Borodi, Chemistry Central Journal, 2013, 7:5.
  • Validation of an analytical method based on the high-resolution continuum source flame atomic absorption spectrometry for the fast-sequential determination of several hazardous/priority hazardous metals in soil, T. Frentiu, M. Ponta, R. Hategan Chemistry Central Journal, 2013, 7:43.
  • Arsenic and antimony determination in non- and biodegradable materials by hydride generation capacitively coupled plasma microtorch optical emission spectrometry, AI Mihaltan, T. Frentiu, M. Ponta, D. Petreus, M. Frentiu, E. Darvasi, C. Marutoiu, Talanta 2013, 109, 84-90.
  • Simple and robust method for lithium traces determination in drinking water by atomic emission using low-power capacitively coupled plasma microtorch and microspectrometer. A. Zsigmond, T. Frentiu, M. Ponta, M. Frentiu, D. Petreus, Food chemistry, 2013, 141, 3621-3626.
  • New method for mercury determination in microwave digested soil samples based on cold vapor capacitively coupled plasma microtorch optical emission spectrometry: Comparison with atomic fluorescence spectrometry, T. Frentiu, A.I.  Mihaltan, M. Senila, E. Darvasi, M. Ponta, M. Frentiu, B.P. Pintican, Microchem J, 2013, 110, 545-552.

 DBI Journals

 

 

 

 

 

 

 

 

 

 

 

 

 

 
    • Figures of Merit for a Sequential Spectrometer with Inductively Coupled Argon Plasma Source, E. A. Cordoş, T. Frenţiu, A. Fodor, Michaela Ponta, Ana-Maria Rusu and L. Kekedy, Studia Universitatis “Babeş-Bolyai”,CHEMIA XL, 1995, 1-2, 13.
    • Analysis of Calcium, Natrium and Lithium Using a Capacitively Coupled Argon Plasma Atomic Emission Spectrometry, E. A. Cordos, Tiberiu Frentiu, Sorin D. Anghel, Ana-Maria Rusu, Michaela Ponta and Sorin Negoescu Studia Universitatis “Babeş-Bolyai,CHEMIA XL,1995, 1-2, 1. 
    • Bioaccumulation of certain heavy metals by fish populations in the Cris/Koros rivers, A. Sarkany-Kiss, Michaela Ponta, A. Fodor, I. Telcean, Tiscia monograph series, The Criş/Koros Rivers Valley,  ISBN 963 04 9564 3, 1997, p. 327.
    • Bioaccumulation of certain heavy metals by unionidae molluscs in Cris/Koros rivers A Sarkany-Kiss, Michaela Ponta, A. Fodor, Tiscia monograph series, The Criş/Koros Rivers Valley,  ISBN 963 04 9564 3, 1997, p. 209.
    • Chemical characteristics of the water and sediment of the Cris/Koros river system, J. Hamar, K. Zsuga, A. Fodor, M. Ponta, Tiscia monograph series, The Criş/Koros Rivers Valley, ISBN 963 04 9564 3, 1997, p. 103.
    • Photometric Determination of Biuret in Melted Urea using Flow Injection Analysis, T. Frentiu, M. Ponta, E. Darvasi, L. Nagy-Kekedy, I. Margineanu, E. Cordos, Studia Universitatis “Babeş-Bolyai,CHEMIA XLVI , 2001, 1-2, 265-272.
    • Spectrophotometric Determination of Tungsten(V) as Thiocyanate Complex in Certified Steel Materials, T. Frentiu, M. Ponta, E. Cordos. Studia Universitatis “Babeş-Bolyai,CHEMIA XLVI, 2001, 1-2, 273-280.
    • An investigation into the Cu, Pb and Zn Pollution of the Somes and Lapus Rivers of Baia-Mare Area, Romania, M. Ponta, T. Frentiu, C. McCormick, B. Abraham, C. Roman, E. Cordos, Studia Universitatis “Babeş-Bolyai,CHEMIA XLVIII, 2003, 1,151-159.
    • Flame Atomic Emission Determination of Strontium in Flotation Tailings Using the Methane-Air Flame as Excitation Source, L. Kekedy-Nagy, T. Frentiu, A.M. Rusu, M. Ponta, E. Cordos, Studia Universitatis “Babeş-Bolyai,CHEMIA XLVIII, 2003, 1,225-234.
    • Study of Arsenic determination in soil by spectrometric methods with and without hydride generation, T. Frentiu, M. Ponta, N. Alexa, G. Meculescu, M. Senila, B. Abraham, E. Cordos, Studia Universitatis “Babeş-Bolyai,CHEMIA XLVIII, 2003, 2, 171-180.
    • Monitoring of Cu, Cd, Pb and Zn in sediment of the Somes river in NW Romania after the cyanide spill accident in January 2000, M. Ponta, T. Frentiu, A. Manciulea, E. Cordos, Acta Universitatis Cibiniensis, Seria F Chemia, 2003, 1, 3-11.
    • Analysis of Y0.95Bi0.05Ba2Cu3Ox and Bi2 Sr2Ca0.9Gd0.1Cu2Ox superconducting samples via ICP-OES technique, A. Simon, S.D. Anghel, T. Frentiu, M. Ponta, M.M. Pop, S. Simon, Studia Universitatis “Babeş-Bolyai, PHYSICA, XLVIII, 1, 2003, 25-34.
    • Extraction and determination methods of arsenic from soil and river sediment, T. Frentiu, M. Ponta, I. Kasler, E. Cordos, Acta Universitatis Cibiniensis, Seria F Chemia, 2005, (8) 1, 27-32.
    • Use of sequential extraction to assess metal fractionation in soils from Bozanta Mare, Romania, E. Konradi, T. Frentiu, M. Ponta, E. Cordos, Acta Universitatis Cibiniensis, Seria F Chemia, 2005, (8) 2, 5-12.
    • Speciation of inorganic arsenic in soil by extraction and hydride generation. M. Ponta, T. Frenţiu, B. Abraham, E.A.Cordoş, Bulletin of the Transilvania University of Brasov, Romania, ISSN 1223-964x, seria D, Special Edition for the 2nd International Conference on Trends in Environmental Education EnvEdu 2005, 8-10 sept. 2005, Brasov, Romania, p. 275-280.
    • Heavy metals fractionation in sediments by sequential extraction schemes. E.A. Konradi, T. Frentiu, M. Ponta, M. Senila, E.Cordos, Bulletin of the Transilvania University of Brasov, Romania, ISSN 1223-964x, seria D, Special Edition for the 2nd International Conference on Trends in Environmental Education EnvEdu 2005, 8-10 sept. 2005, Brasov, Romania, p. 247-252.
    • Environmental and occupational exposure to Cr, Cu, Pb and Zn of population in Baia-Mare using as index the absorption of contaminants in hair, M. Ponta, T. Frentiu, E. Darvasi, A. Bonda, E. Cordos, 2005, Studia Universitatis “Babeş-Bolyai, CHEMIA, L, 1,193-200.
    • Comparative study of digestion procedures of soils and water sediments using different HCl/HNO3 ratios for multielemental determination, T. Frentiu, M. Ponta, E. Darvasi, B. Reiz, M. Senila, E. Cordos, 2005, Studia Universitatis “Babeş-Bolyai,CHEMIA, L, 1, 183.
    • Preliminary Study Regarding Heavy Metal Pollution of Soil Around the Bozanta Mare Tailing Dam, E.A. Konradi, T. Frentiu, M. Ponta, C. Roman, A. Mihaly Cosmuta, E. Cordos, 2006, Environment and Progress, ISSN 1584-6733 6, 245-250.
    • Influence of heavy metals in soil on groundwater quality in the mining area in northern Romania. T. Frenţiu, M. Ponta, C. Baciu, M. Postolache, Bulletin of the Transilvania University of Brasov, ISSN 1223-9631, Special Edition for the 3nd International Conference on Trends in Environmental Education EnvEdu 2006, 18-20 Nov. 2006, Brasov, Romania, p. 117-124.
    • Distribution of water available As(III) and As(V) species in soil and the influence on the groundwater quality in a mining affected area in northern Romania. T. Frentiu, M. Ponta, C. Baciu, Bulletin of the Transilvania University of Brasov,ISSN 1223-9631,  Special Edition for the 3nd International Conferenceon Trends in Environmental Education EnvEdu 2006,  Brasov, Romania, p. 125-130.
    • Use of Tessier’s sequential extraction scheme to assess cu, pb and zn fractionation in soil, E. Konradi, T. Frentiu, Michaela Ponta, M. Şenilă, S. Mărginean, E. Cordos Environ& Progress, 2007, 9, 259-264, ISSN 158-6733.

 International conference proceedings
  • XXXVI Magyar Szinkepelemzo Vandorgyules. X Magyar Molekulaspektroszkopiai Konferencia, Kaposvar, July 1994.

Influence of the set-up geometry on the analytical signal in r.f.CCP. Determination of several heavy metals in industrial pollutants of air.
T.Frenţiu, A.Fodor, Michaela Ponta, Ana-Maria Rusu and E.A. Cordoş, Vol. I, p. 173-177.

  • 42 nd Hungarian Conference on Spectrochemistry, Veszprem, 28 – 30 June, 1999, Hungary.

Medium Power r.f. Coupled Plasma as Alternative Source in Atomic Spectroscopy A.M. Rusu, T. Frenţiu, M. Ponta, E. Cordoş, p. 22-25.

  • Proceedings of 33Th International Conference of Slovak Society of Chemical Engineering, Tatranske Matliare, Slovakia, 22-26 May, 2006 (pdf, electronic format)
    Profile Distribution of As(III) and As(V) Species in Soil and Groundwater in the Mining Area Baia Mare – Bozanta, Romania,
    T. Frentiu, S.-N. Vlad, M. Ponta, C. Baciu, I. Kasler, and E. Cordos, Editors: J. Markos, V. Stefuka, ISBN 80-227-2409-2, p. 261-1—261-10.
    Profile Distribution of Heavy Metals in Soil and Their Influence on Groundwater Quality in Bozanta-Sasar Mining Area, Romania,
    T. Frentiu, S.-N. Vlad, M. Ponta, C. Baciu, M. Postolache, and E. Cordos, Editors: J. Markos, V. Stefuka, ISBN 80-227-2409-2, p. 212-1—212-10.
  • Optical Techniques for Environmental Monitoring and Risk Assessment Summer School, OTEM 2006 ,  July 31, August 09, 2006 , Baia Mare, Romania
    Preliminary Study On Soil Lead Pollution Around The Bozanta Mare Tailing Pond Using Tessier’s extraction Scheme    ,
    Erika-Andrea Konradi, Michaela Ponta, Tiberiu Frentiu , Marin Senila, Cecilia Roman, Anca Mihaly Cozmuta, Emil Cordos, Published by INOE 2006, ISBN (10) 973-85818-8-5; ISBN (13) 978-973-85818-8-3, p. 259-262.
  • Proceedings of 34Th International Conference of Slovak Society of Chemical Engineering, Tatranske Matliare, Slovakia, 21-25 May, 2007 (pdf, electronic format)
    Validation of the Tessier scheme for speciation of metals in soil using the Bland and Altman test,
    T. Frentiu, Michaela Ponta, E. Levei, E. Gheorghiu, I. Kasler, M. Miclean, E. Cordos, Editors: J. Markos, V. Stefuka, ISBN 978-80-227-2640-5, p. 183-1—183-10.
    Heavy metals mobility in soils with different pollution levels
    C. Roman, Michaela Ponta, E. Levei, M. Senila, M. Miclean, B. Abraham, O. Cadar, M. Ursu, E. Cordoş , Editors: J. Markos, V. Stefuka, ISBN 978-80-227-2640-5, p. 184-1—184-6.
  • Optoelectronic Techniques for Environmental Monitoring and Risk Assessment, 21 - 24 May 2007, Bucharest, Romania
    Heavy metals mobility in soils from a nonferrous mining region    ,
    E.A. Levei, M. Senila, M. Miclean, Michaela Ponta, B. Abraham, C. Roman, E.  Cordoş, Published by INOE 2007, ISBN 978-973-86818-9-0, p. 145-151.
    Interlaboratory Study on Cu, Pb and Zn Determination in Soil by Inductively Coupled Plasma Optical Emission Spectrometry using the Bland and Altman Test,
    T. Frentiu, Michaela Ponta, E. Levei, M. Senila, M. Ursu, E. Cordos, Published by INOE 2007  ISBN 978-973-86818-9-0. p. 228-239.
  • Proceedings of 35Th International Conference of Slovak Society of Chemical Engineering, Tatranske Matliare, Slovakia, 26-30 May, 2008 (pdf, electronic format)
    Study of Cu, Pb, Zn and Cd distribution in soil in the Baia Mare town and surroundings resulted from antrthropogenic activities,
    C. Roman, E. Levei, Michaela Ponta, T. Frentiu M. Miclean, M. Senila, E. Cordos, Editors: J. Markos, V. Stefuka, ISBN 978-80-227-2903-1, 062-1  - 062-11.
    Figures of merit of a radiofrequency capacitively coupled plasma in atomic fluorescence spectrometry, 
    E. Cordoş, T. Frentiu, E. Darvasi, Michaela Ponta, M. Senila, Editors: J. Markos, V. Stefuka, ISBN 978-80-227-2903-1, 098-1  - 098-8.
    Discharge characteristics and non-spectral interferences in a medium power radiofrequency capacitively coupled plasma,
    T. Frentiu, Michaela Ponta, E. Cordoş, Editors: J. Markos, V. Stefuka, ISBN 978-80-227-2903-1, 102-1  - 102-11.
    Study of partitioning and dynamic of metals in contaminated soil using the modified four-step BCR sequential extraction procedure,
    T. Frentiu, Michaela Ponta, E. Levei, E. Cordoş, Editors: J. Markos, V. Stefuka, ISBN 978-80-227-2903-1, 103-1  -103-26.
  • The 9th International Symposium on Metal Elements in Environment, Medicine and Biology, Cluj-Napoca, 16 – 17 Octombrie 2009
    Determination of Dissolved Metals in Water Samples by Diffusion Gradients in Thin Films (DGT) Method,
    Marin Şenilă, Lăcrămioara Şenilă, Tiberiu Frenţiu, Michaela Ponta, Emil Cordoş, Luminiţa Silaghi- Dumitrescu, Editori Gabriela Gârban, Ioan Silaghi- Dumitrescu. Cluj University Press, Babeş-Bolyai University, Cluj-Napoca, Tome IX, pag. 157 – 61, ISSN 1583-4204.

 National conference proceedings
•   Analytical Applications for A Radiofrequency Plasma Coupled with Tip-Ring Electrode Geometry, Vol. III Part III, Chemistry and Chemical Engineering Conference, Technical University, Bucharest,  p. 427-432, oct.1995. E. A. Cordoş, T. Frenţiu, S. D. Anghel, Ana-Maria Rusu, A. Fodor, Michaela Ponta, S. Negoescu.
•   The Study and The Optimization of Easy-Excitable Elements by A Radiofrequency Capacitively Coupled Plasma Source, Vol. III Part III, Chemistry and Chemical Engineering Conference, Technical University, Bucharest, p. 627-632, oct.1995.  E. A. Cordoş, T. Frenţiu, S. D. Anghel, Ana-Maria Rusu, A. Fodor, Michaela Ponta, and S. Negoescu.

 International conference

  • XXXVI Magyar Szinkepelemzo Vandorgyules. X Magyar Molekulaspektroszkopiai Konferencia, Kaposvar, July 1994.
  • 42 nd Hungarian Conference on Spectrochemistry, Veszprem, 28 – 30 June, 1999, Hungary.
  • Proceedings of 33Th International Conference of Slovak Society of Chemical Engineering, Tatranske Matliare, Slovakia, 22-26 May, 2006 (pdf, electronic format)
  • Optical Techniques for Environmental Monitoring and Risk Assessment Summer School, OTEM 2006 , July 31, August 09, 2006 , Baia Mare, Romania
  • Proceedings of 34Th International Conference of Slovak Society of Chemical Engineering, Tatranske Matliare, Slovakia, 21-25 May, 2007 (pdf, electronic format)
  • Optoelectronic Techniques for Environmental Monitoring and Risk Assessment, 21 - 24 May 2007, Bucharest, Romania
  • Proceedings of 35Th International Conference of Slovak Society of Chemical Engineering, Tatranske Matliare, Slovakia, 26-30 May, 2008 (pdf, electronic format)
  • The 9th International Symposium on Metal Elements in Environment, Medicine and Biology, Cluj-Napoca, 16 – 17 Octombrie 2009
  • The 17th International Symposium on Analytical and Environmental Problems, Szeged,Hungary, 19 September 2011 •       Soil Pollution Assessment in the Baia Mare Area After Partial Closure of Ore Processing Activities, Erika Levei, Cecilia Roman, Marius Roman, Michaela Ponta, Tiberiu Frentiu
  • The International Conference on Innovation and Collaboration in Engineering Research, Second Edition Bucuresti 20 - 21 Iunie  Determination of several hazardous/priority hazardous metals in environmental samples by  capacitively coupled plasma atomic emission spectrometry Alin Ironim Mihaltan, Tiberiu Frentiu, Michaela Ponta, Constantin Marutoiu