Mihaela Ciopec, Adina Negrea, Lavinia Lupa, Corneliu Mircea Davidescu, Petru Negrea, Studies regarding As(V) adsorption from underground watere by Fe-XAD8-DEHPA impregnated resin. Equilibrium sorption and fixed-bed column tests, Molecules, 19, pp. 16082-16101, 2014, doi: 10.3390/m0lecules 191016082, ISSN: 1420-3049, FI=2.095
Adina Negrea, Lavinia Lupa, Mihaela Ciopec, Petru Negrea, Silica impregnated with cyphos IL-101 for Cs+ adsorption, Environmental Engineering & Management Journal, 2014, vol. 13(8), pag. 2005-2013, ISSN:  1582-9596, FI=1.258

Adriana Popa, Mihaela Ciopec, Adina Negrea, Lavinia Lupa, Petru Negrea, Corneliu Mircea Davidescu, Gheorghe Ilia, Narcis Duteanu, Use of styrene-divinylbenzene grafted with aminoethylaminomehtyl groups and various ion liquids in the removal process of thalium and strontium, Pure Appl. Chem., 86(11), pp. 1741-1753, 2014, ISSN: 0033-4545 şi1365-3075, FI=3.112
Adina Negrea, Adriana Popa, Mihaela Ciopec, Lavinia Lupa, Petru Negrea, Corneliu Mircea Davidescu, Marilena Motoc, Vasilel Mînzatu, Phosphonium grafted styrene-divinylbenzene resins impregnate3d with iron(III) and crown ethers for arsenic removal, Pure Appl. Chem., 86(II), 1729-1740, 2014, ISSN: 0033-4545 şi 1365-3075, FI=3.112
Lavinia Lupa, Adina Negrea, Mihaela Ciopec, Petru Negrea, Cs+ removal from aqueous solutions through adsorption onto florisil impregnated with trihexyl (tetradecyl) phosphonium chloride, Molecules, 18, pp. 12845-12856, 2013, ISSN:1420-3049, FI=2.095
Adina Negrea,  Mihaela Ciopec, Corneliu Mircea Davidescu, Cornelia Muntean, Petru Negrea, Lavinia Lupa, Kinetic, equilibrium and thermodynamic studies of cesium removal from aqueous solution using Amberjet UP1400 and Amberlite IR 120 resins, Environmental Engineering & Management Journal, 12(5), 2013, p. 991-998, ISSN:  1582-9596, FI=1.258
Heghedus Mindru Ramona Cristina, Heghedus Mindru Gabriel, Negrea Petru, Sumalan Radu, Adina Negrea, Trasca Teodor Ioan,  Rivis Adrian, The monitoring of macroelements from totatoes and bell peppers samples, collected from Timis County, Romania, Current Opinion in Biotechnology, Vol 24 Supliment 1, July 2013 (Congresul European de Biotehnologii, 2013,  p. S96, ISSN: 0958-1669, FI=7.806
Adina Negrea, Lavinia Lupa, Mihaela Ciopec, Petru Negrea, Raluca Voda, Catalin Ianasi, Study of different impregnated mehtods of inorganic supports with ionic liquid, Journal of Environmental Protection and Ecology, (JEPE), 14(4), (acceptata), 2013, ISSN: 1311-5065, FI=0.0338
Mihaela Ciopec, Lavinia Lupa, Adina Negrea, Corneliu Mircea Davidescu, Adriana Popa, Petru Negrea, Marilena Motoc, Dana David, Dana Kaycsa, Kinetic and thermodynamic studies regarding Cu(II) ions removal from aqueous solution by Poly(Styrene-Divinylbenzene)-Supported Aminophosphonic Acids, Revista de Chimie, 2012,  63(1), pp. 49-53, ISSN: 0034-7752, FI=0.677
Mihaela Ciopec, Corneliu Mircea Davidescu, Adina Negrea, Ion Grozav, Lavinia Lupa, Cornelia Muntean, Petru Negrea, Adriana Popa,  Statistical optimization of chromium ions adsorption on DEHPA-impregnated Amberlite XAD7, Environmental Engineering & Management Journal, 2012, 11(3), pp. 525-531, ISSN: 1582-9596, FI=1.258
Mihaela Ciopec, Corneliu Mircea Davidescu, Adina Negrea, Ion Grozav, Lavinia Lupa, Petru Negrea, Adriana Popa, Adsorption Studies of Cr(III) ions from aqueous solution by DEHPA impregnated onto Amberlite XAD-7 Factorial design analysis, Chemical Engineering Research and Design, 90(10), 2012, pp. 1660-1670, ISSN: 0263-8762, FI=2.281
Cioabla Adrian Eugen , Ionel Ioana, Dumitrel Gabriela-Alina, Negrea Petru,  Pode Vasile, Biogas Production through Anaerobic Digestion of some Agro-Industrial Residues, REVISTA DE CHIMIE, 63(6), 2012, 629-632, FI=0.677
Mihaela Ciopec, Corneliu Mircea Davidescu, Adina Negrea, Cornelia Muntean, Adriana Popa, Petru Negrea, Lavinia Lupa, Equilibrium and Kinetic Studies of the Adsorption of Cr(III) ions onto Amberlite XAD8 impregnated with Di (2-ethylhexyl) phosphoric acid (DEHPA), Absorption Science and Technology, 2011, 29(10), pp. 989-1005, ISSN: 0263-6174 , FI=0.93
Adina Negrea, Mihaela Ciopec, Lupa Lavinia, Corneliu Mircea Davidescu, Adriana Popa, Gheorghe Ilia, Petru Negrea, Removal of As(V) by Fe(III) loaded XAD7 impregnated resin containing di(2-ethylhexyl) phosphoric acid DEHPA): Equilibrium, Kinetic, and Thermodinamic modeling studies, Journal of Chemical and Engineering Data, vol. 565, pp. 3830-3838, ISSN: 0021-9568, 2011 , FI=2.045
Adina Negrea, Mihaela Ciopec, Lavinia Lupa, Corneliu Mircea Davidescu, Adriana Popa, Petru Negrea, Marinela Motoc, Adsorption of arsenate anions from aqueous medium by using Fe(III) loaded XAD7-DEHPA impregnated resin, Revista de Chimie, octombrie 2011, vol. 62, nr. 10, pp. 1008-1011, ISSN:0034-7752, FI=0.677
Mihaela Ciopec, Corneliu Mircea Davidescu, Adina Negrea, Lavinia Lupa, Petru Negrea, Adriana Popa, Cornelia Muntean, Use of D2EHPA-impregnated XAD7 resin for the removal of  Cd(II) and Zn(II) from aqueous solution, Environmental Engineering and Managemnent Journal, 2011,  10(10), pp. 1597-1608, ISSN: 1582-9596, FI=1.258
Corneliu Mircea Davidescu, Mihaela Ciopec, Adina Negrea, Adriana Popa, Lavinia Lupa, Petru Negrea, Cornelia Muntean, Marinela Motoc, Use of di-(2-ethylhexyl)phosphoric acid (DEHPA) impregnated XAD7 copolymer resin for the removal of chromium (III) from water, Revista de Chimie, vol. 62, nr. 7, pp. 712-717, 2011, ISSN:0034-7752, FI=0.677
Adina Negrea, Lupa Lavinia, Mihaela Ciopec, Radu Lazǎu, Cornelia Muntean, Petru Negrea, Adsorption of As(III) ions onto iron-containing waste sludge, Adsorption Science & Technology, 28(6), pp. 467-480, ISSN: 0263-6174, 2010, FI=0.93
Mosoarca Giannin, Negrea Petru, Vancea Cosmin, Motoc Marilena, Anghel Mariana, David Dana, Studies Regarding the Effect of Fly Ash used on Coagulation-settling Process of Water Suspensions, REVISTA DE CHIMIE, 61(10), 2010, 983-985, FI=0.677
Maria Mihaela, Hossu  Ana-Maria, Iovi Aurel, Negrea Petru, Stoica Alexandru, Determination of Total Chromium in Workplace Atmospheres, REVISTA DE CHIMIE,  61(9), 2010,  822-824, FI=0.677
Lazau Radu, Lupa Lavinia, Lazau Ioan, Negrea Petru, Pacurariu Cornelia, Synthesis and characterization of some ferruginous powders designed for the depollution of waters with arsenic content, REVISTA ROMANA DE MATERIALE-ROMANIAN JOURNAL OF MATERIALS , 40 (1), 2010, 71-79 , FI=0.538
Mihaela Ciopec, Cornelia Muntean, Adina Negrea, Lavinia Lupa, Petru Negrea, Paul Barvinschi, Synthesis and thermal behavior of double copper and potassium pyrophosphate, Termochimica Acta 488, 2009, pp. 10-16, ISSN 0040-6031, FI=2.105
Ramona Ghiga, Aurel Iovi,  Petru Negrea, Lavinia Lupa, Adina Negrea, Marilena Motoc, Mihaela Ciopec, Mariana Anghel, Emilian Popovici, Studies regarding the recovery possibilities of heavy metals from waste catalysts resulted from CO conversion, Revista de Chimie, nr.1, vol. 59, 2009, p. 68-71, ISSN 0034-7752, FI=0.677
Mihaela Andoni, Anca Dragomirescu, Aurel Iovi, Ioan Ursoiu, Adina Negrea, Lavinia Lupa, Petru Negrea, Mihaela Ciopec, Use of Ion Exchance Resin to Remove the Mercury from Contaminated Waters, Revista de Chimie, nr.4, vol. 60, 2009, p. 424-426, ISSN 0034-7752, FI=0.677
Mihaela Ciopec, Cornelia Muntean, Adina Negrea, Lavinia Lupa, Petru Negrea, Marinela Motoc, Corina Samuila, Synthesis and Characterization of a PK Fertilizer containiong Zinc as Micronutrient, Revista de Chimie, nr.7, vol. 60, 2009, p. 678-682, ISSN 0034-7752 , FI=0.677
Mosoarca Giannin, Negrea Petru, Motoc Marilena, Craciunescu Mihaela, Anghel Mariana , David Dana,Influence of Settling Tank Sludge Recycling on Aluminum Residual Form Distribution in Treated Water, REVISTA DE CHIMIE , 60 (6), 2009, 636-640, FI=0.677
Banica R, Nyari T, Barvinschi P, Negrea P, Vaszilcsin, N., Early stage formation of CuInS2 nanocrystals and microspheres by ambient pressure solution synthesis in glycerol, JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS,  11 (7) , 2009, 950-956 , FI=0.563
Beinsan Carmen, Mosoarca Giannin, Sumalan Radu, Camen Dorin, Negrea Petru,  Negrea Adina, Studies Regarding Tailings Pond Seepage Water from Mining Activities over Avena sativa L. Germination Influence, NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA, 37 (1), 2009, 187-190 , FI=0.467
Lavinia Lupa, Petru Negrea, Adina Negrea, Aurel Iovi, Laura Cocheci, Giannin Mosoarca,  Modelling and automation of the phosphate ions removal process from waste waters, Brazilian Journal of Chemical Engineering, vol. 25(1), January-March, 2008, pp.1-9, ISSN 0104-6632, FI=0.912
Mihaela  Andoni, Aurel  Iovi, Petru Negrea, Adina Negrea, Lavinia Lupa, Mihaela Ciopec, Studies regarding the removing of mercury from soil using Na-EDTA, Na2S2O3 and KI solutions, Revista de Chimie, nr.6, vol. 59, 2008, p. 653-655, ISSN 0034-7752, FI=0.677
Mihaela  Andoni, Aurel Iovi, Petru Negrea, Lavinia Lupa, Adina Negrea, Mihaela Ciopec, Mercury removing from the contamined soil using KI solution. The pH influence, Revista de Chimie, nr.7, vol. 59, 2008, p. 779-781, ISSN 0034-7752 , FI=0.677
Petru Negrea, Marinela Motoc, Adina Negrea, Lavinia Lupa, Mihaela Ciopec, Quantitative analysis of trace metals accumulation in teeth through atomic absorption spectrometry, European Cells and Materials, Vol. 16, Supliment 5, 2008, p. 33 , FI=4.289
Gherman Vasile-Daniel, Breheret Jean-Gabriel, Negrea Petru, Motoc Marilena, The testing of the capacity of an acidophilic consortium from an old mine concerning the elimination of iron and manganese from the underground waters, REVISTA DE CHIMIE , 59(6), 2008,  712-715 , FI=0.677
Popa  Adriana, Davidescu Corneliu-Mircea, Negrea Petru, Ilia Gheorghe, Katsaros Antonis, Demadis Konstantinos, Synthesis and characterization of phosphonate ester/phosphonic acid grafted styrene - Divinylbenzene copolymer microbeads and their utility in adsorption of divalent metal ions in aqueous solutions,  INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,  47(6), 2008, 2010-2017,  FI=2.235
Lupa Lavinia, Negrea Petru, Iovi Aurel, Ciopec Mihaela, Motoc Marilena, Obtaining the zinc oxide from zinc ash , REVISTA DE CHIMIE, 58 (11), 2007, 1075-1079 , FI=0.677
Adina Negrea, Vasile Pode,  Petru Negrea, Aurel Iovi, Lavinia Lupa,  Mihaela Ciopec, Giannin Moşoarcă,  Studii asupra procesului de eliminare prin precipitare-coagulare a ionului fosfat, Revista de Chimie,  2007, nr. 10, vol. 58, 2007, p. 999-1003, ISSN 0034-7752 , FI=0.677
Peev Camelia Ioana, Dehelean Cristina Adriana, Antal Diana Simona, Negrea Petru, Tamas Mircea, The analysis of the main mineral elements in foliar buds of some medicinal plants, REVISTA DE CHIMIE, 57(5), 2006, 494-497 , FI=0.677
Muntean C., Brandl W., Iovi A., Negrea P., Studies on the thermal behavior of a complex mineral fertilizer of nitrophosphate type,  THERMOCHIMICA ACTA, 439,  Issue: 1-2, 2005,  21-26, FI=2.105
Butnariu M., Goian M., Ianculov I., Gergen I., Negrea, P., Studies about CO2+ ion influence on soy plants development and acumulation of other chemical elements (Iron, magnesium, calcium, potassium and phosphorus),  REVISTA DE CHIMIE , 56(8), 2005, 837-841  , FI=0.677
Munteanu C, Marginean G, Iovi A, Negrea P., Studies on the thermal behaviour of the ammonium cobalt phosphate, REVISTA DE CHIMIE , 55(2), 2004,  81-85 , FI=0.677
Niculescu M, Vaszilcsin N, Davidescu CM, Negrea P, Birzescu M, Budrugeac P, Structural investigations and thermal analysis of the coordination compound obtained through the reaction of 1,3-propanediol with Co(NO3)(2)center dot 6H(2)O, REVUE ROUMAINE DE CHIMIE, 48(12), 2003, 997-1006 , FI=0.393
Burtica G., Pode R., Negrea P., Mihut A.D., Composition eliminating smell of domestic animal excreta-consists of a clinoptilolitic zeolite based blend, to reduce the duration of the smell, Patent Number: RO114438-B1, FI=1