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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 51 13893 12506 311 295 262 9875

Spas D. Kolev publications per year

The chart shows the history of publications by Spas D. Kolev between 1985 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Spas D. Kolev published across 41 years, from 1985 to 2025, averaging 7.4 papers a year. Output peaked at 21 publications in 2018. 27 of the 303 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1985 to 2025. Vertical axis: number of publications, 0 to 21. Peak 21 publications in 2018. 1985: 2 publications 1986: 2 publications 1987: 5 publications 1988: 5 publications 1989: 1 publication 1990: 5 publications 1991: 4 publications 1992: 4 publications 1993: 2 publications 1994: 1 publication 1995: 2 publications 1996: 2 publications 1997: 6 publications 1998: 11 publications 1999: 8 publications 2000: 8 publications 2001: 5 publications 2002: 1 publication 2003: 2 publications 2004: 3 publications 2005: 4 publications 2006: 3 publications 2007: 7 publications 2008: 7 publications 2009: 7 publications 2010: 11 publications 2011: 10 publications 2012: 12 publications 2013: 11 publications 2014: 11 publications 2015: 14 publications 2016: 14 publications 2017: 9 publications 2018: 21 publications 2019: 12 publications 2020: 10 publications 2021: 12 publications 2022: 9 publications 2023: 13 publications 2024: 16 publications 2025: 11 publications
1985 2025

303 publications in total across all disciplines

View publications per year as a table
Spas D. Kolev: publications per year, 1985 to 2025
Year Publications
1985 2
1986 2
1987 5
1988 5
1989 1
1990 5
1991 4
1992 4
1993 2
1994 1
1995 2
1996 2
1997 6
1998 11
1999 8
2000 8
2001 5
2002 1
2003 2
2004 3
2005 4
2006 3
2007 7
2008 7
2009 7
2010 11
2011 10
2012 12
2013 11
2014 11
2015 14
2016 14
2017 9
2018 21
2019 12
2020 10
2021 12
2022 9
2023 13
2024 16
2025 11
Total 303
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Spas D. Kolev publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Spas D. Kolev sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 261–280 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 262 publications — 53rd percentile

53% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979 262
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Spas D. Kolev D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Spas D. Kolev sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 50–51 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 51 D-Index — 23rd percentile

23% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861 51
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

Spas D. Kolev is affiliated with the University of Melbourne in Australia. Their research spans multiple fields within engineering and environmental science, with a strong emphasis on areas intersecting mechanical and biomedical engineering as well as analytical chemistry and sustainability.

Kolev's publication record demonstrates a focus on extraction and separation processes, analytical chemistry method development, and techniques for recycling and waste management. Further topical interests include renewable energy and sustainable power systems, electrochemical analysis and applications, radioactive element chemistry and processing, and global energy security and policy.

Their frequent coauthors include M. Inês G.S. Almeida, Aleksandra Rybak, Тony Spassov, Robert W. Cattrall, and Charles F. Croft. This collaborative network suggests interdisciplinary connections across membrane technology, environmental materials, and chemical engineering.

Publication venues where Kolev has most frequently contributed include:

  • Air Quality Atmosphere & Health
  • Energies
  • Membranes
  • Microchemical Journal
  • Separation and Purification Technology

Key recent papers authored or coauthored by Kolev showcase ongoing research in water harvesting, polymer inclusion membranes, green chemical analysis, and environmental impacts:

  • Recent Development of Atmospheric Water Harvesting Materials: A Review, 2022, ACS Materials Au
  • PVDF-HFP based polymer inclusion membranes containing Cyphos® IL 101 and Aliquat® 336 for the removal of Cr(VI) from sulfate solutions, 2020, Separation and Purification Technology
  • A new need, quality, and sustainability (NQS) index for evaluating chemical analysis procedures using natural reagents, 2023, Microchemical Journal
  • Ionic liquid-based polymer inclusion membranes for metal ions extraction and recovery: Fundamentals, considerations, and prospects, 2024, Chemical Engineering Journal
  • Pandemic products and volatile chemical emissions, 2020, Air Quality Atmosphere & Health

Kolev's research contributions are grounded in engineering disciplines with a significant focus on environmental science applications. Their work in mechanical engineering and biomedical engineering supports the development of sustainable and efficient materials and analyses.

Their studies on polymer inclusion membranes, ionic liquids in metal ion recovery, and sustainable indexes for chemical analysis exemplify a consistent integration of analytical rigor with environmental sustainability.

Best Publications

  • Extraction and transport of metal ions and small organic compounds using polymer inclusion membranes (PIMs)

    Long D. Nghiem;Patrick Mornane;Ian D. Potter;Jilska M. Perera

  • Metal ion ligands in hyperaccumulating plants

    Damien L. Callahan;Alan J. M. Baker;Spas D. Kolev;Anthony G. Wedd

  • The molybdenum blue reaction for the determination of orthophosphate revisited: Opening the black box.

    Edward A Nagul;Ian D McKelvie;Paul Worsfold;Spas D Kolev

  • Recent trends in extraction and transport of metal ions using polymer inclusion membranes (PIMs)

    M. Inês G.S. Almeida;Robert W. Cattrall;Spas D. Kolev

  • Developments of microfluidic paper-based analytical devices (μPADs) for water analysis: A review.

    M. Inês G.S. Almeida;B. Manori Jayawardane;Spas D. Kolev;Ian D. McKelvie;Ian D. McKelvie

  • Microfluidic paper-based analytical device for the determination of nitrite and nitrate.

    B Manori Jayawardane;Shen Wei;Ian D McKelvie;Ian D McKelvie;Spas D Kolev

  • Polymer inclusion membranes (PIMs) in chemical analysis - A review.

    M. Inês G.S. Almeida;Robert W. Cattrall;Spas D. Kolev

  • The extraction of cadmium (II) and copper (II) from hydrochloric acid solutions using an Aliquat 336/PVC membrane

    Lijuan Wang;Rohani Paimin;Robert W Cattrall;Wei Shen

  • Chemical characterisation and speciation of organic selenium in cultivated selenium-enriched Agaricus bisporus

    Tebo Maseko;Damien L. Callahan;Frank R. Dunshea;Augustine Doronila

  • Applications of everyday IT and communications devices in modern analytical chemistry: A review.

    Kate Grudpan;Spas D Kolev;Somchai Lapanantnopakhun;Ian D McKelvie

  • Extraction of uranium(VI) from sulfate solutions using a polymer inclusion membrane containing di-(2-ethylhexyl) phosphoric acid

    Alexander M. St John;Robert W. Cattrall;Spas D. Kolev

  • Theoretical analysis of the pseudo-second order kinetic model of adsorption. Application to the adsorption of Ag(I) to mesoporous silica microspheres functionalized with thiol groups

    Yoshikazu Miyake;Hiroya Ishida;Shunsuke Tanaka;Spas D. Kolev

  • The study of a membrane for extracting gold(III) from hydrochloric acid solutions

    George Argiropoulos;Robert W. Cattrall;Ian C. Hamilton;Spas D. Kolev

  • Development of a Gas-Diffusion Microfluidic Paper-Based Analytical Device (μPAD) for the Determination of Ammonia in Wastewater Samples

    Badra Manori Jayawardane;Ian D. McKelvie;Ian D. McKelvie;Spas D. Kolev

  • Influence of the composition of polymer inclusion membranes on their homogeneity and flexibility

    Natalie Pereira;Alexander St John;Robert W. Cattrall;Robert W. Cattrall;Jilska M. Perera

  • Measuring Donnan-related phenomena using a solid-state ion sensor and a concentration-step method

    Jan C.T. Eijkel;Wouter Olthuis;S.D. Kolev;Piet Bergveld

  • Advances in flow injection analysis and related techniques

    Spas Dimitrov Kolev;Ian McKelvie

  • Solid phase extraction of zinc(II) using a PVC-based polymer inclusion membrane with di(2-ethylhexyl)phosphoric acid (D2EHPA) as the carrier.

    Spas D Kolev;Yoshinari Baba;Robert W Cattrall;Tsutomu Tasaki

  • Development of a polymer inclusion membrane (PIM) for the preconcentration of antibiotics in environmental water samples

    Aida Garcia-Rodríguez;Víctor Matamoros;Spas D. Kolev;Clàudia Fontàs

  • Recovery of gold ions from discarded mobile phone leachate by solvent extraction and polymer inclusion membrane (PIM) based separation using an amic acid extractant

    Fukiko Kubota;Riho Kono;Wataru Yoshida;Maha Sharaf

  • Colorimetric detection based on localised surface plasmon resonance of gold nanoparticles: Merits, inherent shortcomings and future prospects

    Yanlin Zhang;Ian D. McKelvie;Ian D. McKelvie;Robert W. Cattrall;Spas D. Kolev

  • Analytical challenges and advantages of using flow-based methodologies for ammonia determination in estuarine and marine waters

    Lenka O'Connor Šraj;M. Inês G.S. Almeida;Stephen E. Swearer;Spas D. Kolev

  • Relationships of nicotianamine and other amino acids with nickel, zinc and iron in Thlaspi hyperaccumulators

    Damien L. Callahan;Spas D. Kolev;Richard A. J. O’Hair;David E. Salt

Frequent Co-Authors

Robert W. Cattrall
Robert W. Cattrall University of Melbourne
Ian D. McKelvie
Ian D. McKelvie University of Melbourne
Anne Steinemann
Anne Steinemann University of Melbourne
Alan J. M. Baker
Alan J. M. Baker University of Queensland
Ian E. Woodrow
Ian E. Woodrow University of Melbourne
Masahiro Goto
Masahiro Goto Kyushu University
Stephen D. Ebbs
Stephen D. Ebbs Southern Illinois University Carbondale
Muthupandian Ashokkumar
Muthupandian Ashokkumar University of Melbourne
Vincent Pettigrove
Vincent Pettigrove RMIT University
Manuel Miró
Manuel Miró University of the Balearic Islands

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