1. Preliminary Study of Copper and Lead Distribution in Soil Using Tessier’s Extraction Scheme

          E. Konradi, M. Dumitru, N. Vrinceanu, M. Ponta, T. Frentiu, E. Cordos
          Cea dea XVIII-a Conferinta Nationala de stiinta Solului, Cluj-Napoca, 20-26 august, 2006


  2. Environmental and Occupational Exposure to Cr, Cu, Pb and Zn of Baia Mare Population Using as Index the Content of Contaminants in Hair

          M. Ponta, T. Frentiu
          Al XIII-lea Congres National de Farmacie, Universitatea de Medicina si Farmacie Iuliu   
          Hatieganu Cluj-Napoca, 28 – 30 septembrie, 2006, Cluj-Napoca

  3. Study for the Determination of Cd, Pb and Zn in Biological Fluids by Inductively Coupled Plasma Mass Spectrometry

          M. Ursu, m. Paul, M. Senila, T. Frentiu, M. Chintoanu, C. Tanaselia
         Al XIII-lea Congres National de Farmacie, Universitatea de Medicina si Farmacie Iuliu   
          Hatieganu Cluj-Napoca, 28 – 30 septembrie, 2006, Cluj-Napoca

  4. Digestion Methods of Soil and Water sediments for Multielemental Determination of Heavy Metals

          T. Frentiu, M. Ponta
          Al XIII-lea Congres National de Farmacie, Universitatea de Medicina si Farmacie Iuliu   
          Hatieganu Cluj-Napoca, 28 – 30 septembrie, 2006, Cluj-Napoca

  5. Arsenic Determination from Soil and River Sediments by Inductively Coupled Plasma Atomic Emission Spectrometry

          T. Frentiu, M. Ponta
          Al XIII-lea Congres National de Farmacie, Universitatea de Medicina si Farmacie Iuliu   
          Hatieganu Cluj-Napoca, 28 – 30 septembrie, 2006, Cluj-Napoca

  6. Fractionarea plumbului īn sol prin extractie secventiala   

           E. Konradi, M. Ponta, T. Frentiu,  M. Senila, E. Cordos
          Simpozionul National Contributii stiintifice īn tehnologii si  echipamente pentru evaluarea si protectia mediului, 28-29 septembrie, 2006, Bistrita,
    7.                                                                                                                                                                                                                                                                           
  7. Influence of Heavy Metals in Soil on Groundwater Quality inthe Mining Area in Northern Roamina

    8.         Tiberiu Trentiu, Michaela Ponta, Calin Baciu, Mihaela Postolache, Bulletin of the Transilvania   
            University of Brasov, published by TransilvaniaUniversity Press, Brasov,ISSN 1223-9631,   
            Special Edition for the 3nd International Conference on Trends in Environmental   
            Education EnvEdu, 18 – 20 Noiembrie ,2006, Brasov.

  8. Distribution of Water Availabel As(III) and As(V) Species in Soil and the Influence on the Groundwater Qiality Area in Northern Romania

    9.         Tiberiu Trentiu, Michaela Ponta, Calin Baciu
            University of Brasov, published by TransilvaniaUniversity Press, Brasov,ISSN 1223-9631,  
            Special Edition for the 3nd International Conference on Trends in Environmental  
            Education EnvEdu, 18 – 20 Noiembrie, 2006, Brasov.

  9. Figures of Merit of a Radiofrequency Capacitively Coupled Plasma in Atomic   

    10.        Fluorescence Spectrometry,
           Emil A. Cordoş, Tiberiu Frenţiu, Eugen darvasi, Michaela Ponta, Marin Şenilă, Sergiu    
           Cadar, A –XXX – a Conferinţă Naţională de Chimie, Călimăneşti – Căciulată, 8 – 10    
           octombrie, 2008, pag. 344, ISBN 978-973-750-124-0.

  10. Discharge Charcateristics and non-Spectral Interferences in a Medium Power   

    11.       Radiofrequency Capacitively Coupled Plasma,
          Tiberiu Frenţiu, Michaela Ponta, E.A. Cordoş, Maria Frenţiu, A –XXX – a Conferinţă   
          Naţională de Chimie, Călimăneşti – Căciulată, 8 – 10 octombrie, 2008, pag. 345, ISBN   
          978-973-750-124-0.

  11. Heart Rate Variability, blood Se, and Left Ventricle Function in Diabets Mellitus, Complicated with Microangiopathy

    12.      L.D. Rusu, T. Frentiu, C. Marutoiu, M.L. Rusu, C. Hotolean, L. Rusu, M. Porojan,
         Al VIII-lea Congres National de Angiopatie si Chirurgie Vasculara    , Cluj – Napoca, 4 – 5 iunie, 2009.

  12. Seleniu seric şi funcţia ventriculară stāngă la diabeticii de tip 2 cu sindrom metabolic
    13.      

         M.N. Rusu, T. Frenţiu, C. Măruţoiu, L.D. Rusu, D. Zdrenghea, M. Rusu, Al IX-lea   
         Congres Naţional de Medicină Internă, Călimăneşti-Căciulată, 23 – 25 aprilie 2009.

  13. Seleniu seric şi microangiopatia din diabetul zaharat de tip 2

    14.       M.N. Rusu, T. Frenţiu, C. Măruţoiu, L.D. Rusu, D. Zdrenghea, M. Rusu, M. Porojan, Al   
          VIII-lea Congres National de Angiopatie si Chirurgie Vasculara, Cluj – Napoca, 4 – 5   
          iunie, 2009.
     

   14.  Microspectrometer equipped with capacitively coupled plasma microtorch for multielemental determinations in environmental samples   

Tiberiu Frenţiu, Eugen Darvasi, Michaela Ponta, L. Kekedy-Nagy, Alin I. Mihălţan, Sergiu Cadar
The XXXI–th National Conference of Chemistry Oltchim, Caciulata-Călimăneşti 3 – 5 october 2012 (http://Conference.Oltchim.ro)

      15. Electrothermal vaporizor for plasma microtorches used in the environmental control

L. Kekedy-Nagy, Tiberiu Frenţiu, Eugen Darvasi, Michaela Ponta, Alin I. Mihălţan
The XXXI–th National Conference of Chemistry Oltchim, Caciulata-Călimăneşti 3 – 5 
october 2012 (http://Conference.Oltchim.ro)

        16.     Applications of analytical spectrometry with microplasma sources for the determination of  traces and ultratraces of toxic elements

      Tiberiu Frenţiu,
      Zilele Academice Clujene, Cluj-Napoca, 2 – 6 June 2014.

     17.     Miniaturized instrumentation for simultaneous multielemental analyses. Alternative to inductively coupled plasma    

Tiberiu Frenţiu,
Simpozion dedicat comemărării a 100 de ani de la naşterea Prof. Dr. Doc. Candin Liteanu – Om de ştiinţă emerit,
Cluj-Napoca, 11 september 2014.

     18.  Green analytical methods a new approache in atomic spectrometry – principles and  applications

       Tiberiu Frenţiu,
       Zilele Academice Clujene, Cluj-Napoca, 17 – 19 May 2016.

     18.  Mercury determination and speciation - a necessity at European level: eco-scale methods based on photoinduced derivatization and detection using microplasma sources.

       Tiberiu Frenţiu,
       Zilele Academice Clujene, Cluj-Napoca, 2018.