1. Capacitively Coupled Plasma with Tip-Ring Electrode Geometry for Atomic Emission Spectrometry. Analytical Performance and Matrix Effect of NaCl and KCl.
    E.A. Cordoş, S.D.Anghel, T.Frenţiu şi A. Popescu.
    Journal of Analytical Atomic Spectrometry, 1994, 9, 635 - 641

  2. Elemental Speciation of Pb, Zn and Cu in sedimented Dust and Soil Using a Capacitively Coupled Plasma Atomic Emission Spectrometer as Detector.
    E. A. Cordoş, T. Frențiu, Ana-Maria Rusu şi G. Vâtcă.
    Analyst (London), 1995, 120, 725 - 731

  3. Comparison between Tip-Ring Electrode and Single Tip Electrode Geometries for An Atmospheric-Pressure Capacitively Coupled Plasma.
    E. A. Cordoş, T. Frențiu, A. Fodor, Michaela Ponta, Ana-Maria Rusu şi S. Negoescu.
    ACH Models in Chemistry (Budapest), 1995, 132, 313 - 329

  4. Characteristic Temperatures and Electron Number Densities in An r.f. Capacitively Couple Plasma.
    S. D. Anghel, T. Frențiu, E. Darvasi, Ana-Maria Rusu, A. Simon şi E. A. Cordoş.
    Fresenius’ Journal of Analytical Chemistry, 1996, 354, 250 – 251

  5. The Analysis of Conductive Solid Samples by r.f. Capacitively Coupled Plasma at Atmospheric-Pressure.
    S. D. Anghel, T. Frențiu, Ana-Maria Rusu, Lucia Beşe şi E. A. Cordoş.
    Fresenius’ Journal of Analytical Chemistry, 1996, 354, 252 - 253

  6. Analytical Performances for A Radiofrequency Capacitively Coupled Plasma.
    T. Frențiu, Ana-Maria Rusu, Michaela Ponta, S. D. Anghel şi E. A. Cordoş.
    Fresenius’ Journal of Analytical Chemistry, 1996, 354, 254 – 255

  7. Fundamental Characteristics and Analytical Performances of a Argon CCP with Axial View.
    S.D.Anghel, M. Todica, E.A.Cordoş, T. Frențiu, A.M. Rusu. A. Popescu and A. Simon.
    Balkan Physics Letters, 5 supl, 1315 - 1318, 1997

  8. Synthesis and Characterization of Some Manganese (II), Cobalt (II) and Copper (II) polyoxotungtates with As (III) as Heteroatom.
    Cristina Roşu, T. Frențiu, A.M. Rusu, S. Anghel, E. Cordoş şi G. Marcu.
    Syinth. React. Inorg. Met. Org. Chem., 1998, 28, 1665 - 1672 

  9. Analytical Characterization of a Capacitively Coupled Plasma Torch with Central Tube Electrode.
    E.A. Cordoş, T. Frențiu, A-M. Rusu, S.D. Anghel, A. Fodor şi M. Ponta.
    Talanta, 1999, 48, 827 - 837

  10. Phisical Characteristics and Spectral Capabilities of Capacitively Coupled Radiofrequency Plasma Soustained in Atmospheric Pressure.
    T. Frențiu, S.D. Anghel, A. Simon, A.Popescu, A-M. Rusu, şi E.A. Cordoş.
    ACH Models in Chemistry (Budapest), 1999, 136, 131 - 148

  11. Radiofrequency Capacitively Coupled Plasma Torch with Central Tubular Electrod and Outer Ring Electrode.
    T. Frențiu, A-M Rusu, S.D. Anghel, S. Negoescu, A. Popescu, A. Simon şi E.A. Cordoş.
    ACH Models in Chemistry (Budapest), 1999, 136, 119 - 129

  12. Figures of Merit and Fundamental Processes in Analysis of Ca from Liquid Samples using an r.f.CCP Torch with Tubular and Ring Electrodes.
    T. Frențiu, S.D. Anghel, M. Nicola, E. Darvasi, A Simon şi E. Cordoş.
    Croatica Chemica Acta, 1999, 72, 763 – 778.

  13. Atmospheric Pressure Capacitively Coupled Plasma Source for the Direct Analysis of non-Conductive Solid Samples.
    S.D. Anghel, T. Frențiu, E.A. Cordoş, A. Simon şi A. Popescu.
    Journal of Analytical Atomic Spectrometry, 1999, 14, 541 – 545.

  14. Cadmium Determination in Sedimented Dust by Atomic Emission Spectrometry with a New Radiofrequency Capacitively Coupled Plasma.
    T. Frențiu, M. Ponta, A.M. Rusu, S.D. Anghel, A. Simon şi E. Cordoş.
    Analytical Letters, 2000, 33, 323 – 335.

  15. Study of Some Matrix Effects in a Low Power Radiofrequency Capacitively Coupled Plasma with a Central Tubular Molybdenum Electrode and Single Ring Electrode.
    T. Frențiu, S.D. Anghel, A. Simon şi E. Cordoş.
    ACH Models in Chemistry, 2000, 137, 677 – 690.

  16. 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 Cpacitively Coupled Plasma Source and Flame Atmic Absorption Spectrometry.
    M. Ponta, T. Frențiu, A.M. Rusu şi E. A. Cordos, Croatica Chemica Acta, 2002, 75, 291 – 306.

  17. 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. Frențiu, A. Sarkany-Kiss şi E. A. Cordos.
    Croatica Chemica Acta, 2002, 75, 307 – 317.

  18. A Simultaneous Spectrometer with Photodiode Array Detector and Low Power radiofrequency Capacitively Coupled Plasma Source.
    T. Frențiu, E. Darvasi, S.D. Anghel, A. Simon, M. Ponta şi E.A. Cordoş.
    Chem. Anal (Warsaw), 2002, 47, 725 – 736.

  19. 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. Frențiu, M. Ponta, S. D. Anghel, A. Simon, I. Marginean and E. A. Cordos.
    Microchim. Acta, 2003, 143, 245 – 254.

  20. Characterisation of the Rivers System in the Mining and Industrial Area of Baia-Mare, Romania.
    E.A. Cordoş, R. Răuţiu, C. Roman, M. Ponta, T. Frențiu, A. Sarkany, L. Fodorpataky, K. Makalik, C. McCormick and D. Weiss.
    European Journal of Mineral Processing and Enviromental Protection, 2003, 3, No. 3, 324 - 335.

  21. Investigation of Medium Power Radiofrequency Capacitively Coupled Plasmas and Their Application in Atomic Emission Spectrometry for the Determination of Aluminium in Water Samples.
    T. Frențiu, M. Ponta, S.D. Anghel, A. Simon, A.M. Incze and E. A. Cordos.
    Microchim. Acta, 2004, 147, 93 – 103.

  22. Investigation of a Medium Power Radiofrequency Capacitively Coupled Plasma and Its Application to High-Temperature Superconductor Analysis via Atomic Emission Spectrometry.
    A. Simon, T. Frențiu, S.D. Anghel and S. Simon.
    J. Anal. At. Spectrom., 2005, 20, 957 – 965.

  23. Characterization of a Very Low Power Argon CCP .
    S.D. Anghel, A. Simon and T. Frențiu.
    J. Anal. At. Spectrom., 2005, 20, 966 – 973

  24. Optimization of Analytical Parametrs in Inorganic Arsenic (III and V) Speciation by Hydride Generation Using L-cysteine as Prereducind Agent in Diluted HCl Medium.
    E.A. Cordos, T. Frențiu, M. Ponta, B. Abraham and I. Marginean.
    Chem. Spec. Bioavailab., 2006, 18, 1 – 9.

  25. 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. Frențiu, M. Ponta, I. Marginean, B. Abraham and C. Roman.
    Chem. Spec. Bioavailab., 2006, 18, 11 – 25

  26. Profile Distribution of As(III) and As(V) Species in Soil and Grounwater in Bozanta Area .
    T. Frențiu, S.N. Vlad, M. Ponta, C. Baciu, I. Kasler and E. Cordos.
    Chem. Pap., 2007, 61, 186 – 193.

  27. Evaluation of Soil Pollution with Copper, Lead, Zinc and Cadmium in the Mining Area Baia-Mare .
    E. Cordos, C. Roman, M. Ponta, T. Frențiu, R. Rautiu.
    Revista de Chimie

  28. Interlaboratory Study on Cu, Pb and Zn Determination in Soil by Inductively Coupled Plasma Atomic Emission Spectrometry Using the Bland and Altman Test.
    T. Frențiu, M. Ponta, E. Levei, M. Şenilă, M. Ursu and E.A. Cordoş.
    J. Optoelectr. Adv. Mater., 2007, 9, 3503 – 3513

  29. Validation of the Tessier Scheme for Speciation of Metals in Soil Using the Bland and Altman Test .
    T. Frențiu, M. Ponta, E. Levei, E. Gheorghiu, I. Kasler and E.A. Cordoş.
    Chem. Pap., 2008, 62, 114 – 122.

  30. Preliminary Study on Heavy Metals Contamination of SoilUsing Solid Phase Speciation and the Influence on grounwater in Bazanta – Baia Mare Area, Romania.
    T. Frențiu, M. Ponta, E. Levei, E. Gheroghiu, M. Benea and E.A. Cordoş.
    Chem. Spec. Bioavailab., 2008, 20, 111 – 121.

  31. Fast Method for Determination of Cd, Cu, Pb, Se and Zn in Whole Blood by DRC-ICP- MS Using the Simple Dilution Procedure.
    C. Tănăselia, T. Frențiu, M. Ursu, M. Vlad, M. Chintoanu, E. Cordoş, L. David, M. Paul, D. Gomoescu.
    J. Optoelectr. Adv. Mat. Rapid Communication, 2008, 2, 99 – 107.

  32. Preliminary Investigation of a Medium Power Argon Radiofrequency Capacitively Coupled Plasma as Atomization Cell in Atomic Fluorescence Spectrometry of Cadmium.
    T. Frențiu, E. Darvasi, M. Senila, M. Ponta, E. Cordos.
    Talanta, 2008, 76(5), 1170- 1176. DOI: 10.1016/j.talanta.2008.05.020.

  33. Spectroscopic Investigations on a Low Power Atmospheric Pressure Capacitively Coupled Helium Plasma.
    S.D. Anghel, A. Simon, T. Frențiu.
    Plasma Sources Sci. Technol., 2008, 17, 1 – 9.

  34. Study of Partitioning and Dynamics of Metals in Contaminated Soil Using Modified Four-Step BCR Sequantial Extraction Procedure.
    T. Frențiu, M. Ponta, E. Levei, E. Cordos.
    Chem. Pap., 2009, 63, 239 – 248.

  35. Qualitative Assessment oh Heavy Metals Sources in Pitcola/Biomass Briquettes Combustion Using Multivariate Statistical Analysis.
    T. Frențiu, M. Ponta, A. Mihălţan, E. Cordoş, M. Frenţiu, G. Lăzăroiu, L. Traistă, R. Indrieş.
    J. Optoelectr. Adv. Mater., 2009, 11, 697 – 710.

  36. The Synergistic Effect in Coal/Biomass Blend Briquettes Combustion on Element Behaviour in Bottom Ash using ICP-OES.
    G. Lăzăroiu, T. Frențiu, L. Mihăescu, A. Mihălţan, M. Ponta, M. Frenţiu, E. Cordoş.
    J. Optoelectr. Adv. Mater., 2009, 11, 713 – 721.

  37. 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. Frențiu, M. Ponta, M. Şenilă, M. Miclean, C. Roman, E. Cordoş.
    International J. Environ. Anal Chem., 2009, 89, 635 – 649.

  38. Discharge Characteristics and non-Spectral Interferences on the Emission of the Species in a Medium Power r.f.CCP Source.
    T. Frențiu, M. Ponta, E. Darvasi, M. Frentiu, E.A. Cordos.
    Acta Chim. Slov., 2010, 57, 173 – 181.

  39. Evaluation of Figures of Merit for Zn Determination in Environmental and Biological Samples Using EDL Excited AFS in a New r.f.CCP.
    T. Frențiu, M. Ponta, M. Senila, A.I. Mihaltan, E. Darvasi, M. Frentiu, E.A. Cordos.
    J. Anal. At. Spectrom.,2010, 25, 739 – 742.

  40. 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, 2010, 65B, 565 – 570.

  41. Low Power Capacitively Coupled Plasma Microtorch for Simultanous Multielemental Determination by Atomic Emission Using Microspectrometres.
    T. Frențiu, D. Petreus, M. Şenilă, A.I. Mihălţan, E. Darvasi, M. Ponta, E. Plăian, E. Cordoş.
    Microch. J. 2011, 97, 188 – 195.

  42. Mercury Determination in non- and Biodegradable materials by Cold vapor Capacitively Coupled Plasma Microtorch Atomic Emission Spectrometry.
    T. Frențiu, A. I. Mihălţan, M. Ponta, E. Darvasi, M. Frenţiu, E. Cordoş.
    J. Hazard. Mater., 2011, 193, 65 – 69.

  43. Spectroscopic Study of Atmospheric Pressure Argon/Methane Capacitively Coupled Plasma.
    Tiberiu Frenţiu, Michala Ponta, Alin Mihălţan, Eugen Darvasi, Maria Frenţiu, Emil Cordoş.
    Studia Universitas Babeş-Bolyai, Chemia, 2011, LVI, 7 – 16

  44. Analytical capability of a medium power capacitively coupled plasma for the multielemental determination in multimineral/multivitamin preparations by atomic emission spectrometry.
    T. Frențiu, M. Ponta, E. Darvasi, M. Frenţiu, E. Cordoş.
    Food chem., 2012, 134, 2447 – 2552.

  45. Validation of inductively coupled plasma atomic emission spectrometry technique for the determination of trace elements in granular waste.
    M. Ponta, T. Frențiu.
    Studia Chemia, 2012, LVII, 7 – 14.

  46. Essential and toxic elements in dietary supplements determined by ICP-MS.
    Alin, I. Mihălţan, A. Naghiu, C. Tănăselia, T. Frențiu, C. Cimpoiu.
    Studia Chemia, 2012, LVII, 47 – 56.

  47. The heavy metals impact on surface water and soil in the non-sanitary municipal landfill, Pata Rat Cluj-Napoca.
    R. M. Haţegan, G.E. Popiţa, I. Varga, A. Popovici, T. Frențiu.
    Studia Chemia, 2012, LVII, 119 – 126.

  48. Ionization of elements in medium power capacitivelz coupled argon plasma torch with single and double ring electrodes.
    M. Ponta, M. Frenţiu, T. Frențiu.
    Acta Chim. Slov., 2012, 59, 359 – 365.

  49. 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 vapour atomic emission spectrometry.
    T. Frențiu, A. I. Mihîlţan, E. Darvasi, M. Ponta, C. Roman, M. Frenţiu.
    J. Anal. At. Spectrom., 2012, 27, 1753 – 1760.

  50. Characterization and assesment of potential environmental risk of tailings stored in seven ipoundments in the Arie River basin, western Romania.
    E. Levei, T. Frențiu, M. Ponta, C. Tănăselia, G. Borodi.
    Chem. Centr. J., 2013, 7, 5.

  51. 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. Frențiu, M. Ponta, R. Haţegan.
    Chem. Centr. J., 2013, 7, 43.

  52. Arsenic and antimony determination in non- and biodegradable matertials by hydride generation capacitively coupled plasma microtorch optical emission spectrometry.
    Alin I. Mihălţan, T. Frențiu, M. Ponta, D. Petreuş, M. Frenţiu, E. Darvasi, C. Măruţoiu.
    Talanta, 2013, 109, 84 – 90.

  53. Effect of titanium ions on the release rate and uptake at the interface of silica based xerogels with simulated body fluid.
    F. Talos, M. Senila, T. Frențiu, S. Simon.
    Corros. Sci., 2013, 72, 41 – 46.

  54. Simple and robust method for lithium traces determination in drinking water by atomic emission using low-power capacitively coupled plasma microtorch and microspectrometer.
    Andreea R. Zsigmond, T. Frențiu, M. Ponta, M. Frenţiu, D. Petreuş.
    Food Chem., 2013, 141, 3621 – 3626.

  55. New method for mercury determination in microwave digested saol samples based on cold vapor capacitively coupled plasma microtorch optical emission spectrometry: comparison with atomic fluorescence spectrometry.
    T. Frențiu, A.I.  Mihaltan, M. Senila, E. Darvasi, M. Ponta, M. Frentiu, B.P. Pintican.
    Microchem J, 2013, 110, 545-552.

  56. Determination, speciation and distribution of mercury in soil in the surrounding of a former chlor-alkali plant: assessment of sequential extraction and analytical technique.
    T. Frenţiu, B. P. Pintican, S. Butaciu, A. I. Mihaltan, M. Ponta, M. Frenţiu
    Chem. Cent. J., 2013, 7: 178.

  57. A miniaturized capacitively coupled plasma microtorch optical emission spectrometer  
    and a Rh coiled filament as small-sized electrothermal vaporization device for   
    simultaneous determination of volatile elements from liquid microsamples: spectral and   
    analytical characterization.
    T. Frenţiu, E. Darvasi, S. Butaciu, M. Ponta, D. Petreus, A. I. Mihalţan, M. Frenţiu
    Talanta, 2014, 129, 72 – 78

  58. Simultaneous determination of As and Sb in soil using hzdride generation capacitively    
    coupled plasma microtorch optical emission spectrometry – comparison with inductively   
    coupled plasma optical emission spectrometry.  .
    T. Frenţiu, S. Butaciu, M. Ponta, E. Darvasi, M. Şenilă, D. Petreuş, M. Frenţiu
    J. Anal. At. Spectrom., 2014, 29, 1880 – 1888.

  59. Assessemnt of contamination and origin of metals in mining affected river sediments: a   
    case study of the Aries River catchment, Romania
    E. Levei, M. Ponta, M. Şenilă, M. Miclean, T. Frenţiu
    J. Serb. Chem. Soc., 2014, 79, 1019 - 1036.

  60. Analytical chararcterization of a method for mercury determination in food using cold   
    vapour capacitively coupled plasma microtorch optical emission spectrometry –   
    compliance with European legislation requirements
    T. Frenţiu, S. Butaciu, E. Darvasi, M. Ponta, M. Şenilă, D. Petreuş, M. Frenţiu
    Anal. Meth., 2015, 7, 747 – 752.

  61. Determinazion of total mercury in fish tissue using a low-cost cold vapor capacitively   
    coupled plasma microtorch optical emission microspectrometer: comparison with direct   
    mercury determination by thermal decomposition atomic absorption spectrometry 
    T. Frenţiu, S. Butaciu, M. Ponta, M. Şenilă, E. Darvasi, M. Frenţiu, D. Petreuş
    Food Anal. Meth. 2015, 8, 643 – 648.

  62. Sono-induced cold vapour generation interfaced with capacitively coupled plasma microtorch optical emission spectrometry: analytical characterization and comnparison with atomic fluorescence spectrometry
    T. Frenţiu, S. Butaciu, E. Darvasi, M. Ponta, M. Şenilă, E. Levei, M. Frenţiu
    J. Anal. Atom. Spectrom., 2015, 30, 1161 – 1168.

  63. Application of a low-cost electrothermal vaporization capacitively coupled plasma   
    microtorch for simultaneous determination of Cd and Pb in environmental samples
    T. Frenţiu, E. Darvasi, S. Butaciu, M. Ponta, D. Petreuş, R. Etz, M. Frenţiu
    Microchem. J., 2015, 121, 192 – 198.

  64. Prediction of the of Hg and other contaminants in sdoil around a formet chlor-alkali plant    
    using Fuzzy Hierachical Cross-Clustering aproach
    T. Frenţiu, M. Ponta, C. Sarbu
    Chemosphere, 2015, 138, 95 – 103.

  65. An indirect method and equipment for temperature monitoring and control
    R. Etz, D. Petreuş, T. Frenţiu, I. Pătărău, C. Orian
    Adv. Electr. Comput. Eng., 2015, 15, 87 – 94.

  66. Assessment of pollutants input of acide mine drainage and domestic activities in Arieş   
    River water, Romania – a chemometric aproach
    Levei, E.A., Frentiu T., Ponta M., Senila M., Moldovan O. T.,
    Environ. Eng. Manag. J., 2015, 11, 2567 – 2576.

  67. Detedrmination of Cd in food using an electrothermal vaporization capacitively coupled  
    plasma microtorch optical emission microspectrometer: compliance with European   
    legislation and comparison with graphite furnace atomic abgsorption spectrometry.
    S. Butaciu, T. Frenţiu, M. Şenilă, E. Darvasi, S. Cadar, M: Ponta, D. Petreuş, R. Etz, M.     
    Frenţiu
    Food Cont., 2016, 61, 227 – 234.

  68. Development and characterization of a method for the determination of total arsenic   
    in water by hydride generation and optical emission detection in argon capacitively   
    coupled plasma microtorch.
    S. Butaciu, M. Ponta, E. Darvasi, M. Frenţiu, G. Horvath, T. Frenţiu
    Stud. Chem., 2016, LXI, 299 – 310.

  69. Chemical modeling of natural groundwater contamination with arsenic and co-occurring  
    species by combining diagrams and unsupervised multivariate statistical approaches.
    S. Butaciu, M. Senila, C. Sarbu, M. Ponta, C. Tanaselia, M. Sima, T. Frentiu,  
    Chemosphere, 2017, 172, 127 – 137.

  70. Microanalytical Method Based on Electrothermal Vaporization Capacitively Coupled  
    Plasma Microtorch Optical Emission Spectrometry for Multielemental Determination.    
    Comparison with Inductively Coupled Plasma Optical Emission Spectrometry.
    T. Frentiu, S. Butaciu, E. Darvasi, M. Ponta, M. Frentiu, D. Petreus,
    Chem. Pap., 2017, 71, 91-102

  71. Rapid Determination of Trace Elements in Macedonian Grape Brandies for Their
    Characterization and Safety Evaluation
    V. Ivanova-Petropulos, B. Balabanova, E. Bogeva, T. Frentiu, M. Ponta, M, Senila, R.     
    Gulaboski, F. D. Irimie, Food. Anal. Meth., 2017, 10, 459 – 468.