TY  - JOUR
AU  - Ilić, Marija
AU  - Haegel, Franz-Hubert
AU  - Lolić, Aleksandar
AU  - Nedić, Zoran
AU  - Tosti, Tomislav
AU  - Ignjatović, Ivana Sredović
AU  - Linden, Andreas
AU  - Jablonowski, Nicolai D.
AU  - Hartmann, Heinrich
PY  - 2022
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6225
AB  - The knowledge of the structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness test for the analytical methods used in this study. Specific problems connected with the pretreatment of samples and drawbacks of some methods for some types of chars could be identified in an integrated consideration of the results from different methods. None of the spectroscopic methods was found to be suitable for the quality control of all types of chars. The most valuable results were obtained by chemical analysis that, however, required the complete determination of the main elements, including that of oxygen, and of inorganic components for adequate results. The combination of X-ray photoelectron spectroscopy (XPS) and FT-IR spectroscopy allows a rough characterization of surface functional groups, but cannot discriminate aliphatic and aromatic OH groups. FT-IR might be a suitable method for the quality control of biochars made at lower temperature. The results of Raman spectroscopy did not well correlate with the amount of sp2 hybridized carbon determined by XPS. A better correlation of XPS data was found with the electrical polarization determined by the method of spectral induced polarization that was used for the first time in conjunction with extensive analytical characterization. © 2022 Ilić et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
T2  - PLoS ONE
T2  - PLoS ONE
T1  - Surface functional groups and degree of carbonization of selected chars from different processes and feedstock
IS  - 11 November
VL  - 17
DO  - 10.1371/journal.pone.0277365
ER  - 

@article{
author = "Ilić, Marija and Haegel, Franz-Hubert and Lolić, Aleksandar and Nedić, Zoran and Tosti, Tomislav and Ignjatović, Ivana Sredović and Linden, Andreas and Jablonowski, Nicolai D. and Hartmann, Heinrich",
year = "2022",
abstract = "The knowledge of the structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness test for the analytical methods used in this study. Specific problems connected with the pretreatment of samples and drawbacks of some methods for some types of chars could be identified in an integrated consideration of the results from different methods. None of the spectroscopic methods was found to be suitable for the quality control of all types of chars. The most valuable results were obtained by chemical analysis that, however, required the complete determination of the main elements, including that of oxygen, and of inorganic components for adequate results. The combination of X-ray photoelectron spectroscopy (XPS) and FT-IR spectroscopy allows a rough characterization of surface functional groups, but cannot discriminate aliphatic and aromatic OH groups. FT-IR might be a suitable method for the quality control of biochars made at lower temperature. The results of Raman spectroscopy did not well correlate with the amount of sp2 hybridized carbon determined by XPS. A better correlation of XPS data was found with the electrical polarization determined by the method of spectral induced polarization that was used for the first time in conjunction with extensive analytical characterization. © 2022 Ilić et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.",
journal = "PLoS ONE, PLoS ONE",
title = "Surface functional groups and degree of carbonization of selected chars from different processes and feedstock",
number = "11 November",
volume = "17",
doi = "10.1371/journal.pone.0277365"
}

Ilić, M., Haegel, F., Lolić, A., Nedić, Z., Tosti, T., Ignjatović, I. S., Linden, A., Jablonowski, N. D.,& Hartmann, H.. (2022). Surface functional groups and degree of carbonization of selected chars from different processes and feedstock. in PLoS ONE, 17(11 November).
https://doi.org/10.1371/journal.pone.0277365

Ilić M, Haegel F, Lolić A, Nedić Z, Tosti T, Ignjatović IS, Linden A, Jablonowski ND, Hartmann H. Surface functional groups and degree of carbonization of selected chars from different processes and feedstock. in PLoS ONE. 2022;17(11 November).
doi:10.1371/journal.pone.0277365 .

Ilić, Marija, Haegel, Franz-Hubert, Lolić, Aleksandar, Nedić, Zoran, Tosti, Tomislav, Ignjatović, Ivana Sredović, Linden, Andreas, Jablonowski, Nicolai D., Hartmann, Heinrich, "Surface functional groups and degree of carbonization of selected chars from different processes and feedstock" in PLoS ONE, 17, no. 11 November (2022),
https://doi.org/10.1371/journal.pone.0277365 . .

TY  - CONF
AU  - Stankov-Jovanović, Vesna
AU  - Mitić, Violeta
AU  - Ilić, Marija
AU  - Jovanović, Snežana
AU  - Ćirić, Slobodan
AU  - Stojanović, Gordana
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5658
AB  - The aim of this paper is to determine the efficiency of D-µ-SPE with application of novel sorbents as a technique for sample preparation of water samples for the analysis of 16 priority PAHs by GC-MS. The sample preparation technique proved to be very fast, efficient and economical. The results of the proposed method demonstrate that this technique can be applied for routine analysis of PAHs in water. The advantages of this method are characterized by low values of limit of detection (from 0.147 ppb for benzo [a] anthracene to 0.784 ppb for naphthalene) and the limit of quantification (0.717 ppb for naphthalene to 9.459 ppb for benzo [k] fluorantene.
AB  - Ciljevi istraživanja ovog rada su određivanje efikasnosti disperzivne mikroekstrakcije čvrstom fazom (D-µ-SPE) kao tehnike pripreme uzoraka vode za analizu 16 prioritetnih PAU gasnom hromatografijom sa masenom spektrometrijom, primenom novih sorbenasa. Tehnika pripreme uzoraka pokazala se kao veoma brza, efikasna i ekonomična. Rezultati predložene metode dokazuju da se ova tehnika može primeniti kao tehnika pripreme uzoraka za rutinsku analizu PAU u vodi. Prednosti ovakovog načina analize odlikuju se niskim vrednostima granice detekcije (od 0.147 ppb za benzo[a]antracen do 0.784 ppb za naftalen) i granice kvatifikacije (0.717 ppb  za naftalen do 9.459 ppb  za benzo[k]fluoranten).
C3  - 23. Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 09.-10. 03. 2018.
T1  - Application of Dispersive Micro Solid Phase Extraction as a Sample Preparation Technique for GC – MS Analysis of PAHs in Water
T1  - Primena disperzivne mikroekstrakcije čvrstom fazom kao tehnike pripreme uzoraka za GC – MS analizu PAU u vodi
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_5658
ER  - 

@conference{
author = "Stankov-Jovanović, Vesna and Mitić, Violeta and Ilić, Marija and Jovanović, Snežana and Ćirić, Slobodan and Stojanović, Gordana",
year = "2018",
abstract = "The aim of this paper is to determine the efficiency of D-µ-SPE with application of novel sorbents as a technique for sample preparation of water samples for the analysis of 16 priority PAHs by GC-MS. The sample preparation technique proved to be very fast, efficient and economical. The results of the proposed method demonstrate that this technique can be applied for routine analysis of PAHs in water. The advantages of this method are characterized by low values of limit of detection (from 0.147 ppb for benzo [a] anthracene to 0.784 ppb for naphthalene) and the limit of quantification (0.717 ppb for naphthalene to 9.459 ppb for benzo [k] fluorantene., Ciljevi istraživanja ovog rada su određivanje efikasnosti disperzivne mikroekstrakcije čvrstom fazom (D-µ-SPE) kao tehnike pripreme uzoraka vode za analizu 16 prioritetnih PAU gasnom hromatografijom sa masenom spektrometrijom, primenom novih sorbenasa. Tehnika pripreme uzoraka pokazala se kao veoma brza, efikasna i ekonomična. Rezultati predložene metode dokazuju da se ova tehnika može primeniti kao tehnika pripreme uzoraka za rutinsku analizu PAU u vodi. Prednosti ovakovog načina analize odlikuju se niskim vrednostima granice detekcije (od 0.147 ppb za benzo[a]antracen do 0.784 ppb za naftalen) i granice kvatifikacije (0.717 ppb  za naftalen do 9.459 ppb  za benzo[k]fluoranten).",
journal = "23. Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 09.-10. 03. 2018.",
title = "Application of Dispersive Micro Solid Phase Extraction as a Sample Preparation Technique for GC – MS Analysis of PAHs in Water, Primena disperzivne mikroekstrakcije čvrstom fazom kao tehnike pripreme uzoraka za GC – MS analizu PAU u vodi",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_5658"
}

Stankov-Jovanović, V., Mitić, V., Ilić, M., Jovanović, S., Ćirić, S.,& Stojanović, G.. (2018). Application of Dispersive Micro Solid Phase Extraction as a Sample Preparation Technique for GC – MS Analysis of PAHs in Water. in 23. Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 09.-10. 03. 2018..
https://hdl.handle.net/21.15107/rcub_agrospace_5658

Stankov-Jovanović V, Mitić V, Ilić M, Jovanović S, Ćirić S, Stojanović G. Application of Dispersive Micro Solid Phase Extraction as a Sample Preparation Technique for GC – MS Analysis of PAHs in Water. in 23. Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 09.-10. 03. 2018.. 2018;.
https://hdl.handle.net/21.15107/rcub_agrospace_5658 .

Stankov-Jovanović, Vesna, Mitić, Violeta, Ilić, Marija, Jovanović, Snežana, Ćirić, Slobodan, Stojanović, Gordana, "Application of Dispersive Micro Solid Phase Extraction as a Sample Preparation Technique for GC – MS Analysis of PAHs in Water" in 23. Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 09.-10. 03. 2018. (2018),
https://hdl.handle.net/21.15107/rcub_agrospace_5658 .

TY  - CONF
AU  - Ćirić, Slobodan
AU  - Stankov-Jovanović, Vesna
AU  - Mitić, Violeta
AU  - Ilić, Marija
AU  - Jovanović, Snežana
AU  - Stojanović, Gordana
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5657
AB  - The aim of this paper is application of novel sorbents in dispersive micro solid phase extraction (D-μ-SPE) as a technique for sample preparation of water, for the analysis of 16 PAHs by gass chromatography - mass spectrometry (GC-MS). D-μ-SPE proved to be an effective technique consuming a small amount of the solvent for the analysis. D-μ-SPE is characterized by its rapidity (7 minutes per sample including all preparation of standard solutions and measuring of sorbents) and cheapness as well. Low values of the detection limit and limit of quantification, acceptable accuracy and precision values propose this method for routine water analysis for the determination of PAHs.
AB  - Cilj istraživanja ovog rada je primena novih sorbenasa u disperzivnoj mikroekstrakciji čvrstom fazom (D-µ-SPE) kao tehnikom pripreme uzoraka vode za analizu 16 prioritetnih PAU gasnom hromatografijom sa masenom spektrometrijom (GC-MS). D-µ-SPE se pokazala kao efikasna i ekonomična tehnika pripreme uzoraka vode pri čemu se troši mala količina rastvarača za ekstrakciju i koristi jeftin pribor za pripremu uzoraka koja traje 7 minuta (uključujući pripreme standardnih rastvora i odmeravanje sorbenasa). Niske vrednosti granice detekcije i kvantifikacije, prihvatljive vrednosti tačnosti i preciznosti predloženu metodu analize 16 prioritetnih PAU kvalifikujuje za rutinsku analizu vode.
C3  - 23. Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 09.-10. 03. 2018.
T1  - Application of Novel Sorbents in D-Μ-Spe Sample Preparation for Gc-Ms Analysis of Pahs in Water
T1  - Primena novih sorbenasa u D-µ-SPE TEhnici pripreme uzoraka za GC – MS analizu PAU u vodi
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_5657
ER  - 

@conference{
author = "Ćirić, Slobodan and Stankov-Jovanović, Vesna and Mitić, Violeta and Ilić, Marija and Jovanović, Snežana and Stojanović, Gordana",
year = "2018",
abstract = "The aim of this paper is application of novel sorbents in dispersive micro solid phase extraction (D-μ-SPE) as a technique for sample preparation of water, for the analysis of 16 PAHs by gass chromatography - mass spectrometry (GC-MS). D-μ-SPE proved to be an effective technique consuming a small amount of the solvent for the analysis. D-μ-SPE is characterized by its rapidity (7 minutes per sample including all preparation of standard solutions and measuring of sorbents) and cheapness as well. Low values of the detection limit and limit of quantification, acceptable accuracy and precision values propose this method for routine water analysis for the determination of PAHs., Cilj istraživanja ovog rada je primena novih sorbenasa u disperzivnoj mikroekstrakciji čvrstom fazom (D-µ-SPE) kao tehnikom pripreme uzoraka vode za analizu 16 prioritetnih PAU gasnom hromatografijom sa masenom spektrometrijom (GC-MS). D-µ-SPE se pokazala kao efikasna i ekonomična tehnika pripreme uzoraka vode pri čemu se troši mala količina rastvarača za ekstrakciju i koristi jeftin pribor za pripremu uzoraka koja traje 7 minuta (uključujući pripreme standardnih rastvora i odmeravanje sorbenasa). Niske vrednosti granice detekcije i kvantifikacije, prihvatljive vrednosti tačnosti i preciznosti predloženu metodu analize 16 prioritetnih PAU kvalifikujuje za rutinsku analizu vode.",
journal = "23. Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 09.-10. 03. 2018.",
title = "Application of Novel Sorbents in D-Μ-Spe Sample Preparation for Gc-Ms Analysis of Pahs in Water, Primena novih sorbenasa u D-µ-SPE TEhnici pripreme uzoraka za GC – MS analizu PAU u vodi",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_5657"
}

Ćirić, S., Stankov-Jovanović, V., Mitić, V., Ilić, M., Jovanović, S.,& Stojanović, G.. (2018). Application of Novel Sorbents in D-Μ-Spe Sample Preparation for Gc-Ms Analysis of Pahs in Water. in 23. Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 09.-10. 03. 2018..
https://hdl.handle.net/21.15107/rcub_agrospace_5657

Ćirić S, Stankov-Jovanović V, Mitić V, Ilić M, Jovanović S, Stojanović G. Application of Novel Sorbents in D-Μ-Spe Sample Preparation for Gc-Ms Analysis of Pahs in Water. in 23. Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 09.-10. 03. 2018.. 2018;.
https://hdl.handle.net/21.15107/rcub_agrospace_5657 .

Ćirić, Slobodan, Stankov-Jovanović, Vesna, Mitić, Violeta, Ilić, Marija, Jovanović, Snežana, Stojanović, Gordana, "Application of Novel Sorbents in D-Μ-Spe Sample Preparation for Gc-Ms Analysis of Pahs in Water" in 23. Savetovanje o biotehnologiji sa međunarodnim učešćem, Čačak, 09.-10. 03. 2018. (2018),
https://hdl.handle.net/21.15107/rcub_agrospace_5657 .