1.Iulian Zoltan Boboescu, Mariana Ilie, Vasile Gherman, Ion Mirel, Bernadett Pap, Adina Negrea, Eva Konodorosi, Tibor Biro, Gergely Maroti, Revealing the factors influencing a fermentative biohydrogen production process using indutrial wastewater as fermentation substrate, Biotechnology for Biofuels, 7, 2014, pp. 139-152, ISSN: 1754-6834, FI=6.221

2. 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
3.Corneliu Mircea Davidescu, Radu Ardelean, Adriana Popa, Gheorghe Ilia, Smaranda Iliescu, Adina Negrea, Marinela Motoc, Removal of Phenolic compounds from Aqueous Solutions using Poly(Styrene-co-divinylbenzene) Functionalized with Aminophosphonic Acid, Revista de chimie, 65(4), 2014, pp. 444-446 (WOS: 000338605100012) , FI=0.677
4.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:  1582-9596FI=1.258
5.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=3.386
6.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=3.386
7.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=2.428
 8.Mihai Butu, Steliana Rodino, Marius Pentea, Adina Negrea, Petruţa Petrache, Monica Butnariu, IR spectroscopy of the flour from bones of european hare, Digest Journal of nanomaterials and biostructures, 9(4), 2014, pp. 1317-1322, ISSN: 1842-3582, FI=1.123
9.Corneliu Mircea Davidescu, Mihaela Ciopec, Adina Negrea, Adriana Popa, Lavinia Lupa, Ecaterina-Stela Drǎgan, Radu Ardelean, Gheorghe Ilia, Synthesis, characterization and Ni(II) Ion separation proprerties of poly(styrene-co-divinylbenzene)-supported aminophosphonic acids,  Polymer Bulletin, ISSN: 0272-8397,  2013, p. 277-291, FI=1.332
 10.Mihaela Ciopec, Corneliu Mircea Davidescu, Adina Negrea, Lavinia Lupa, Adriana Popa, Cornelia Muntean, Radu Ardelean, Gheorghe Ilia, Synthesis, characterization and adsorption behavior of aminophosphonic grafted on poly(styrene-co-divinylbenzene) for  divalent metal ions in aqueous solutions, Polymer Eng. & Sci, 2013, 53(5), 2013, p1118-1124, Print ISSN: 0032-3888 Online ISSN: 1548-2634, FI=1.243
11.Adina Negrea, Cornelia Muntean, Ioana Bodnarescu, Mihaela Ciopec, Marinela Motoc, Effect of Matrix Solution on As(V) adsorption onto Iron-containing Materials, Revista de Chimie, 64(4), 2013, p. 397-406 ISSN: 0034-7752 , FI=0.538
12. Adina Negrea, Lavinia Lupa, Radu Lazau, Mihaela Ciopec, Oana Pop, Marinela Motoc, Adsorption properties of Fe2O3 and Fe2O3SiO2 mixtures in the removal process of As(III) from underground waters, Revista de chimie 64(5), 2013, p. 487-494, ISSN: 0034-7752 , FI=0.538
13. Marcela Stoia, Paul Barvinschi, Lucian Barbu-Tudoran, Adina Negrea, Floricica Barvinschi, Influence of thermal treatment on the formation of zirconia nanostructured powder by thermal decomposition of different precursors, Journal of Crystal Growth, 381, 2013, p. 93-99, ISSN: 0022-0248 , FI=1.606
14.Iulian Zoltan Boboescu, Vasile Daniel Gherman, Ion Mirel, Gergely Maroti, Adina Negrea, Mihaela Ciopec, Marinela Motoc, Development of two-step fermentative biohydrogen production process using selectively enriched microbial populations as inoculum, Revista de Chimie, 64(8), 2013, pag. 919-924, ISSN: 0034-7752 , FI=0.538
15.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=1.117
 16.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=7.86
17.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=0.259
 18.M. R. Wächter, Ioana Ionel , Adina Negrea, New Concept For Landfill Disposal Of Municipal Solid Waste Incineration Residues, Journal of Environmental Protection and Ecology, (JEPE), 14(2), pp. 947-955, 2013 ISSN: 1311-5065, FI=0.259
19.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=0.538
20.Gabriela Gherman, Adina Negrea, Mihaela Ciopec, Teodor-Eugen Man, Marinela Moţoc, Studies concenrning the stabilization by phytoremediation of soils degraded by mining activities, Revista de Chimie, 63(3), 2012, pp. 324-329, ISSN: 0034-7752, FI=0.538
21.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=1.117
22.Giannin Mosoarca, Adina Negrea, Studies regarding the effects of settling tanks sludge recycling on organic matter concentration from treated water, Journal of Environmental Protection and Ecology (JEPE), 13(1), 2012, pp. 198-202, ISSN: 13311-5065, FI=0.102
23. 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=1.927
 24.Marilena Faier Crivineanu, Garbiela Alina Dumitrel, Dana Silaghi Perju, Cosmin Jinescu, Adina Negrea, The influence of Environmental Factors on Sedimentation Dynamics of Heavy Metals in Surface Waters, Revista de Chimie, 63(10), 2012, pp. 1051-1055, ISSN: 0034-7752, FI=0.538
 25.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=0.606
 26.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=1.693
 27.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=0.599
 28.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=1.004
29.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=0.599
30.Laura Goloşie, Daiana Baliga, Adina Negrea, Marinela Motoc, Corina Samoilǎ, Mariana Anghel, Acid waters impact of the environment, Revista de chimie, vol. 62, nr. 12, 2011, pp. 1199-1202, ISSN:0034-7752, FI=0.599
 31.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=0.559
32.Adina Negrea, Lavinia Lupa, Mihaela Ciopec, Cornelia Muntean, Radu Lazǎu, Marinela Motoc, Arsenic removal from Aqueous solutions using a binary mixed oxide, Revista de Chimie, 61(7),  pp. 691-695, ISSN: 0034-7752, 2010, FI=0.693
33.Cosmin Vancea, Giannin Moşoarcǎ, Adina Negrea, Marinela Motoc, Dana Kaycsa, Corina Samoila, Molybdenum-phosphate glass with high MoO3 content, Revista de Chimie, 61(9), pp. 848-852, ISSN: 0034-7752, 2010 , FI=0.693
34. 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=1.742
 35.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=0.552
36. 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=0.552
 37.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=0.552
 38.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=0.352
 39.Vasile Gherman, Jean-Gabriel Breheret Marilena Motoc, Rahela Carpa, Adina Negrea, Florina-Adriana Radu The sulphur and iron metabolism in acidophilic microbial gelatinous formations from an auriferous sulphides mine from the south – west of Romania, Revista de Chimie, nr.10, vol. 59, 2008, pp. 1164-1169, ISSN 0034-7752 , FI=0.389
40. 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=0.389
41.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=0.389
42.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
43.Mihaela Ciopec, Aurel Iovi, Cornelia Muntean, Adina Negrea, Lavinia Lupa, Marilena Motoc, Studii privind procesul de obtinere a ingrasamintelor de tip PK cu microelementul cobalt, Revista de Chimie, nr.8, vol. 58, 2007, p. 725-728, ISSN 0034-7752, FI=0.291
44.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=0.291