1. Characterization of a Very Low Power Argon Capacitively Coupled Plasma

    S.D. Anghel, A. Simon, T. Frenţiu, European Winter Conference on Plasma
    Spectrochemistry, 30 january – 3 february, 2005, Budapesta, Ungaria.

  2. Investigation of a Medium Power Radiofrequency Capacitively Coupled Plasma and Its

    Aplication to High-Temperature Superconductor Analysis Via Atomic Emission Spectrometry
    A. Simon, T. Frenţiu, S.D. Anghel, , European Winter Conference on Plasma
    Spectrochemistry, 30 january – 3 february, 2005, Budapesta, Ungaria.

  3. Speciation of inorganic arsenic in soil by extraction and hydride generation.

    4. M. Ponta, T. Frenţiu, B. Abraham, E.A.Cordoş,
    The 2nd International Conference on Trends in Environmental, 8 – 10 sept, 2005, Braşov, Romania.

  4. Heavy metals fractionation in sediments by sequential extraction schemes.

    5. E.A. Konradi, T. Frentiu, M. Ponta, M. Senila, E.Cordos,
    The 2nd International Conference on Trends in Environmental, 8 – 10 sept, 2005, Braşov, Romania.

  5. Extraction and Determination Methods of Arsenic fronm Soil and River Sediment

    Tiberiu Frenţiu, Michaela Ponta, Iosif Kasler, Emil Cordoş
    15 Years of Food Engineering Higher Education in Sibiu, Internatinal Conference “Agricultural and Food Sciences, Processes and Technologies”, 12 – 13 Mai 2005, Sibiu.

  6. Use of Sequential Extraction to Asses Metal Fractionation in Soils from Bozânta Mare, Romania

    Erika-Andrea Konrady, Tiberiu Frenţiu, Michaela Ponta, Emil Cordoş
    15 Years of Food Engineering Higher Education in Sibiu, Internatinal Conference “Agricultural and Food Sciences, Processes and Technologies”, 12 – 13 Mai 2005, Sibiu.

  7. Insuracnce of the results quality in laboratories using certified reference materials,

    8. M. Senila, T. Frentiu, M. Ponta, B. Reiz, C. Roman, E. Cordos
    32th International Conference of Slovak Society of ChemicalEngineering, 23-27 mai, 2005,Tatranske Matliare, Slovakia.

  8. Use of Tessier’s sequential extraction scheme to asses Cu, Pb and Zn fractionation in soil

    9. E.A. Konradi, T. Frentiu, M. Ponta, M. Senilă, S. Marginean, E. Cordos
    Conferinţa Internationala Elsedima 2006, Environmental safety and Management, 31 iulie, 2006, Tulcea

  9. Preliminary Study On Soil Lead Pollution Around The Bozanta Mare Tailing Pond Using Tessier’s Extraction Scheme

    10. E.A. Konradi, M. Ponta, T. Frentiu , M. Senila, C. Roman, A. Mihaly Cozmuta, E.Cordos
    Optoelectronical Techniques for Environmental Monitoring and Risk Assessment Summer School, OTEM, 31 Iulie – 9 Septembrie, 2006 , Baia Mare

  10. Profile distribution of As(III) and As(V) species in soil and groundwater in the mining affected area Baia Mare – Bozanta, Romania

    11. T. Frentiu, S. Vlad, M. Ponta, C. Baciu, I. Kasler, E. Cordos
    33rd International Conference of Slovak Society of Chemical Engineering, 22 – 26 mai, Tatranske Matliare, Slovacia

  11. Profile distribution Of Heavy metals in soil and Their influence on groundwater quality in Bozanta-Sasar mining area, Romania

    12. T. Frentiu, S. Vlad, M. Ponta, C. Baciu, M. Postolache, E. Cordos
    33rd International Conference of Slovak Society of Chemical Engineering, 22 – 26 mai, Tatranske Matliare, Slovacia

  12. Trace and ultratrace analysis in liquids by atomic spectrometry. Comparative study between ICP-AES and ICP-MS techniques

    13. M. Senila, C. Roman, E. Konradi, T. Frentiu, E. Cordos
    33rd International Conference of Slovak Society of Chemical Engineering, 22 – 26 mai, Tatranske Matliare, Slovacia

  13. Influence of heavy metals in soil on grounwater quality in the mining area in northen Romania
    14.   

    T. Frentiu, S. Vlad, M. Ponta, C. Baciu, M. Postolache, E. Cordos, The 3nd International
    Conference on Trends in Environmental, 18 – 20 noiembrie, 2006, Braşov, Romania.

  14. Distribution of As(III) and As(V) species in soil and their influnce on the groundwater quality in the mining area in northen Romania

    15. T. Frentiu, S. Vlad, M. Ponta, C. Baciu, I. Kasler, E. Cordos, The 3nd International
    Conference on Trends in Environmental, 18 – 20 noiembrie, 2006, Braşov, Romania.

  15. Interlaboratory Study on Cu, Pb and Zn Determination in Soil by Inductively Coupled Plasma Optical Emission Spectrometry using the Bland and Altman Test

    16. Tiberiu Frentiu, Michaela Ponta, Erika Levei, Marin Senila, Monica Ursu, Emil Cordos,
    Optoelectronic Techniques for Environmental Monitoring and Risk Assessment, 21 - 24
    May 2007, Bucharest, Romania, ISBN 978-973-86818-9-0, 228 – 239.

  16. Validation of the Tessier scheme for speciation of metals in soil using the Bland and Altman test.
    17.    

    Tiberiu Frentiu, Michaela Ponta, Erika Levei, Emilia Gheorghiu, Iosif Kasler, Mirela
    Miclean, Emil Cordos, A 34-a Conferinţa Internaţională a Societăţii Slovace de Inginerie Chimică,
    Tatranske Matliare, Slovacia, 21-25 mai 2007, ISBN 978-80-227-2640-5 181 – 1 – 181 – 10.

  17. Figures of Merit of a Radiofrequency Capacitively Coupled Plasma in Atomic Fluorescenece Spectrometry

    18. Emil Cordos, Tiberiu Frentiu, Eugen Darvasi, Michaela Ponta and Marin Senila, 35 th
    International Conference of Slovak Society of Chemical Engineering, Tatranske Matliare,
    Slovacia, 26 - 30 mai 2008, ISBN, 978-80-227-2903-1.

  18. Discharge Characteristics and Non-Spectral Interferneces in a Medium Power Radiofrequency Capacitively Coupled Plasma

    19. Tiberiu Frentiu, Michaela Ponta, Emil Cordos, 35 th International Conference of Slovak
    Society of Chemical Engineering, Tatranske Matliare, Slovacia, 26 - 30 mai 2008, ISBN, 978-80-227-2903-1.

  19. Study of Partitioning and Dynamic of Metals in Contaminated Soiul Using the Modified Four-Step BCR Sequential Extraction Procedure

    20. Tiberiu Frentiu, Michaela Ponta, Erika Levei, Emil Cordos, 35 th International
    Conference of Slovak Society of Chemical Engineering, Tatranske Matliare, Slovacia,
    26 - 30 mai 2008, ISBN, 978-80-227-2903-1.

  20. Study of Cu, Pb, Zn and Cd Distribution in Soil in the Baia Mare Town and Surroundings Resulted from Anthropogenic Activities,

    21. Cecilia Roman, Erika Levei, Michaela Ponta, Tiberiu Frentiu, Mirela Miclean, Marin
    Senila, Emil Cordos, 35 th International Conference of Slovak Society of Chemical
    Engineering, Tatranske Matliare, Slovacia, 26 - 30 mai 2008, ISBN, 978-80-227-2903- 1.

  21. Evaluation of Soil Arsenic Mobilization into Groundwater,

    22. Tiberiu Frentiu, Michaela Ponta, Calin Baciu, Emil Cordos, ESTROM International
    Conference Environmental Research and Mitigation of Water Pollution in Romania and in the Lower Danube Region, Bucureşti, 3-5 Septembrie 2008.

  22. Heavy metal mobility in a soil from a mining and a rural area of Romania, The 35th

    Erika- Andrea Levei, Tiberiu Frentiu, Michaela Ponta, Cecilia Roman, Marin Senila, Mirela Miclean, Emil Cordos,
    International Symposium on Environmental Analytical Chemistry,
    ISEAC 35, Gdansk, Polonia 22-26 iunie, 2008, ISBN 978-83-925754-4-3.

  23. Validation of ICP-OES Method for Metals Determination from Soil Samples

    24. M. Şenilă, E. Levei, C. Roman, B. Abraham, T. Frenţiu, E. Cordoş,
    ESTROM International Conference Environmental Research and Mitigation of Water Pollution in Romania and in the Lower Danube Region, Bucureşti, 3-5 Septembrie 2008.

  24. Fast Measurement Method of Lead Isotopic Ration in mEteoritic Material Using Quadrupole ICP-MS,

    25. Caludiu Tănăselia, Stanko Ilik-Popov, Dana Pop, Bela Abraham,
    Cecilia Roman, Emil Cordoş, Tiberiu Frenţiu, Trajce Stafilov, Leontin David, The 9th
    International Symposium on Metal Elements in Environment, Medicine and Biology,
    Cluj-Napoca, 16 – 17 Octombrie 2009.

  25. Determination of Dissolved Metals in Water Samples by Diffusion Gradients in Thin Films (DGT) Method,

    26. Marin Şenilă, Lăcrămioara Şenilă, Tiberiu Frenţiu, Michaela
    Ponta, Emil Cordoş, Luminiţa Silaghi-Dumitrescu, The 9th International Symposium on
    Metal Elements in Environment, Medicine and Biology, Cluj-Napoca, 16 – 17 Octombrie 2009.

  26. Plant Uptake Factors for 55 Elements in a Rural Mining Area, NW Romania,

    27. Mirela Miclean, Marin Şenilă, Cecilia Roman, Tiberiu Frenţiu, Emil Cordoş, The 9th
    International Symposium on Metal Elements in Environment, Medicine and Biology,
    Cluj-Napoca, 16 – 17 Octombrie 2009.

   27. Separation, identification and determination of some heavy metals from Achillea Millefolium

      Constantin Măruţoiu, Tiberiu Frenţiu, Măruţoiu Olivia Florena, Badea Delia

      10 th International Symposium on Metal Elements in Environment, Medicine and   

      Biology, Timişoara, USAMV, 12 noiembrie 2010

    28. Soil polution assessment in the Baia Mare area after partial closure of ore processing activities,

Erika Levei, Roman Cecilia, Roman Marius, Ponta Michaela, Frentiu Tiberiu,

      The 17th International Symposium on Analytical and environmental Problems, Szeged, Ungaria, 19 september, 2011

    29. Determination of several hazardous/priority hazardous metals in environmental samples by capacitively coupled plasma atomic emission spectrometry,
Alin Ironim Mihălţan, Tiberiu Frenţiu, Michaela Ponta, Constantin Măruţoiu 
The International Conference on Innovation and Collaboration in Engineering Research,  
Second Edition Bucuresti 20 - 21 Iune, 2013.

     30. Mercury speciation in soil using a 3-step sequential exreaction by cold vapour capacitively coupled microplasma optical emission spectrometry,

Tiberiu Frentiu, Alin I. Mihaltan, Sanziana Butaciu, EugenDarvasi, Michaela Ponta
19th International Symposium on Analytical and Environmental Problems, 23 September
2013, Szeged, SZAB, Hungary

      31. A digitaly controlled programmable power supply used in a vaporizer. 
R. Etz, D. Petreuş, T. Frenţiu, T. Pătărău, 
36th International Spring Seminar on Electronisc Technology (ISSE 2013), 8 – 12 may 
2013, Alba-Iulia, Romania.
        32. Study and implementation of a vaporizer used in plasma equipment for heavy metals determination, 
T. Pătărău, D. Petreuş, R. Etz, C. Orian, E. Darvasi, T. Frenţiu
19th International Symposium for Design and Technology In Electronic Packacing, 
STIIME 2013, Galaţi, Romania.
        33.  Microspectrometer for optical emission analysis in capacitively coupled plasma: characteristics and figures of merit  
E. Darvasi, T. Frenţiu, Alin, I, Mihălţan, S. Cadar, M. Ponta, 
19th International Conference of Chemistry, 21 – 23 november, Baia-Mare, Romania. 
         34. Figures of merit of  a miniaturized spectrometric system with a plasma microtorch for the determination of mercury in fish, 
T. Frenţiu, M. Ponta, E. Darvasi, Alin I. Mihălţan, M. Frenţiu, S. Butaciu, 
19th International Conference of Chemistry, 21 – 23 november, Baia-Mare, Romania.
         35. Liquid microsamples analysis using a capacitively coupled micrplasma source,
E. Darvasi, T. Frenţiu, S. Cadar. M. Ponta, 
XX International Conference of Chemistry, 6 – 9 november 2014, Cluj-Napoca.
         36. Red mud neutralisation bzy PVC and its influence on content in catalytically active species,     
L. Tamas, A. Csavdari, E. Gal, B. Brem, T. Frenţiu, 
XX International Conference of Chemistry, 6 – 9 november 2014, Cluj-Napoca.
         37. Figures of merit in the Hg, As and Sb determination using capacitively coupled plasma microtorch optical emission spectrometry, 
T. Frenţiu, E. Darvasi, S. Cadar, M. Ponta, XX  
International Conference of Chemistry, 6 – 9 november 2014, Cluj-Napoca.
   38. Cadminum and lead determination in environmental samples using electrothermal  vaporization from a small-sized Rh coil and detection by capacitively coupled plasma   
microtorch optical emission spectrometry                                                                         
Eugen Darvasi, Tiberiu Frenţiu, Sînziana Butaciu, Gabriela Horvath, Michaela Ponta, Sergiu Cadar, Maria Frenţiu,
21th International Conference of Chemistry, 23 – 27 september 2015, Şumulreu Ciuc.

39. Mercury determination in food and environmental samples using sono-induced cold vapor generation and detection by capacitively coupled plasma microtorch optical emissionspectrometry  

Maria Frenţiu, Eugen Darvasi, Sînziana Butaciu, Gabriela Horvath, Michaela Ponta, Tiberiu Frenţiu, 
21th International Conference of Chemistry, 23 – 27 september 2015, Şumulreu Ciuc.

41. Microanalytical method based on electrothermal vaporization capacitively coupled plasma microtorch optical emission spectrometry for multielemental detrmination -comparison with inductively coupled plasma optical emission spectrometry

Frentiu T., Butaciu S., Darvasi E., Ponta M., Frentiu M., Petreus D.
The 42nd International Conference of the Slovak Society of Chemical Engineering, Tatranské Matliare, Slovakia, 23 – 27 May 2016.

42. Electrothermal vaporization device for sample introduction in microplasma sources used  in elemental determination by optical emission spectrometry

Cadar S., Frentiu T., Darvasi E., Butaciu S., Ponta M., Frentiu M., Petreus D.
The 42nd InternationalConference of the Slovak Society of Chemical Engineering, Tatranské Matliare, Slovakia, 23 – 27 May 2016.

43. As, Sb, and Hg determination in soil by electrothermal vaporization and optical emission spectrometry

S. Butaciu, T. Frenţiu, E. Darvasi, M. Ponta1, M. Şenilă, R. Etz
ELSEDIMA Conference, Cluj-Napoca, 23 – 28 May 2016.

44. Miniaturized analizor for mercury based on optical emission spectrometry in capacitively coupled plasma microtorch and small-sized gold microcollector  

T. Frentiu, M. Ponta, E. Darvasi. A. I. Mihaltan, A. Mathe, S. Cadar, M. Senila, M.Frentiu, D. Petreus, F. Puskas, D. Sulea.
Pro Invent, The XIV-th, Cluj-Napoca, Romania, March 2016 
Excelence diploma and gold medal