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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 86 2581 2329 474 464 318 23614

Chak K. Chan publications per year

The chart shows the history of publications by Chak K. Chan between 1982 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Chak K. Chan published across 44 years, from 1982 to 2025, averaging 11.1 papers a year. Output peaked at 36 publications in 2023. 36 of the 487 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1982 to 2025. Vertical axis: number of publications, 0 to 36. Peak 36 publications in 2023. 1982: 1 publication 1983: 0 publications 1984: 1 publication 1985: 1 publication 1986: 0 publications 1987: 2 publications 1988: 2 publications 1989: 1 publication 1990: 2 publications 1991: 4 publications 1992: 3 publications 1993: 1 publication 1994: 3 publications 1995: 5 publications 1996: 5 publications 1997: 13 publications 1998: 5 publications 1999: 8 publications 2000: 12 publications 2001: 13 publications 2002: 16 publications 2003: 17 publications 2004: 17 publications 2005: 17 publications 2006: 14 publications 2007: 18 publications 2008: 16 publications 2009: 10 publications 2010: 9 publications 2011: 10 publications 2012: 12 publications 2013: 11 publications 2014: 11 publications 2015: 15 publications 2016: 12 publications 2017: 30 publications 2018: 17 publications 2019: 23 publications 2020: 15 publications 2021: 24 publications 2022: 19 publications 2023: 36 publications 2024: 23 publications 2025: 13 publications
1982 2025

487 publications in total across all disciplines

View publications per year as a table
Chak K. Chan: publications per year, 1982 to 2025
Year Publications
1982 1
1983 0
1984 1
1985 1
1986 0
1987 2
1988 2
1989 1
1990 2
1991 4
1992 3
1993 1
1994 3
1995 5
1996 5
1997 13
1998 5
1999 8
2000 12
2001 13
2002 16
2003 17
2004 17
2005 17
2006 14
2007 18
2008 16
2009 10
2010 9
2011 10
2012 12
2013 11
2014 11
2015 15
2016 12
2017 30
2018 17
2019 23
2020 15
2021 24
2022 19
2023 36
2024 23
2025 13
Total 487
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Chak K. Chan 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 Chak K. Chan 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, 301–320 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: 318 publications — 67th percentile

67% 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
281–300 939
301–320 764 318
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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Chak K. Chan 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 Chak K. Chan 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, 86–87 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: 86 D-Index — 86th percentile

86% 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
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 86
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

Chak K. Chan is affiliated with the City University of Hong Kong in China. Their research primarily focuses on Environmental Science and Earth and Planetary Sciences, with significant contributions to multiple subfields including Atmospheric Science, Health, Toxicology and Mutagenesis, Environmental Engineering, Global and Planetary Change, and Automotive Engineering.

The scientist's work extensively covers topics related to atmospheric chemistry and aerosols, air quality and health impacts, atmospheric ozone and climate, air quality monitoring and forecasting, atmospheric aerosols and clouds, indoor air quality and microbial exposure, and atmospheric and environmental gas dynamics.

Chak K. Chan has published numerous papers in a range of scientific journals. Recent publications include:

  • "Particulate nitrate photolysis in the atmosphere," 2022, Environmental Science Atmospheres
  • "Enhanced Sulfate Production by Nitrate Photolysis in the Presence of Halide Ions in Atmospheric Particles," 2020, Environmental Science & Technology
  • "Investigation into the Phase-Activity Relationship of MnO2 Nanomaterials toward Ozone-Assisted Catalytic Oxidation of Toluene," 2021, Small
  • "Contribution of Particulate Nitrate Photolysis to Heterogeneous Sulfate Formation for Winter Haze in China," 2020, Environmental Science & Technology Letters
  • "Aqueous secondary organic aerosol formation from the direct photosensitized oxidation of vanillin in the absence and presence of ammonium nitrate," 2022, Atmospheric Chemistry and Physics

The scientist frequently collaborates with several co-authors across their research projects. Notable collaborators include Ruifeng Zhang, Masao Gen, Zhancong Liang, Liyuan Zhou, and Yongjie Li.

Chak K. Chan's research articles appear prominently in well-known publication venues, including Environmental Science & Technology, Atmospheric Chemistry and Physics, The Science of The Total Environment, Environmental Science Atmospheres, and ACS ES&T Air.

Best Publications

  • The characteristics of PM2.5 in Beijing, China

    Kebin He;Fumo Yang;Yongliang Ma;Qiang Zhang

  • The water-soluble ionic composition of PM2.5 in Shanghai and Beijing, China

    Xiaohong Yao;Chak K. Chan;Ming Fang;Steven Cadle

  • Concentration and chemical composition of PM2.5 in Shanghai for a 1-year period

    Boming Ye;Xueli Ji;Haizhen Yang;Xiaohong Yao

  • Application of positive matrix factorization in source apportionment of particulate pollutants in Hong Kong

    Eddie Lee;Chak K. Chan;Pentti Paatero

  • The hygroscopic properties of dicarboxylic and multifunctional acids: measurements and UNIFAC predictions.

    Changgeng Peng;Man Nin Chan;Chak K. Chan

  • Size Effects in Gas-Phase Photo-oxidation of Trichloroethylene Using Nanometer-Sized TiO2 Catalysts

    AJ Maira;King Lun Yeung;CY Lee;Po Lock Yue

  • Characterization of chemical species in PM2.5 and PM10 aerosols in Hong kong

    K.F Ho;S.C Lee;Chak K Chan;Jimmy C Yu

  • Formation of nitrate and non-sea-salt sulfate on coarse particles

    Hong Zhuang;Chak K Chan;Ming Fang;Anthony S Wexler

  • The effects of organic species on the hygroscopic behaviors of inorganic aerosols.

    Man Yee Choi;Chak K. Chan

  • Size distributions of particulate sulfate, nitrate, and ammonium at a coastal site in Hong Kong

    Hong Zhuang;Chak K. Chan;Ming Fang;Anthony S. Wexler

  • Cuprophilicity: Spectroscopic and Structural Evidence for Cu−Cu Bonding Interactions in Luminescent Dinuclear Copper(I) Complexes with Bridging Diphosphane Ligands

    Chi-Ming Che;Zhong Mao;Vincent M. Miskowski;Man-Chung Tse

  • The effect of calcination on the microstructural characteristics and photoreactivity of Degussa P-25 TiO2

    John F. Porter;Yu-Guang Li;Chak K. Chan

  • Real-time chemical characterization of atmospheric particulate matter in China: A review

    Yong Jie Li;Yele Sun;Qi Zhang;Xue Li

  • Hygroscopicity of water-soluble organic compounds in atmospheric aerosols : Amino acids and biomass burning derived organic species

    Man Nin Chan;Man Yee Choi;Nga Lee Ng;Nga Lee Ng;Chak K. Chan

  • Size distributions and formation of ionic species in atmospheric particulate pollutants in Beijing, China: 1-inorganic ions

    Xiaohong Yao;Arthur P.S. Lau;Ming Fang;Chak K. Chan

  • Size distributions and formation of dicarboxylic acids in atmospheric particles

    Xiaohong Yao;Ming Fang;Chak K. Chan

  • Formulation Development and Bioavailability Evaluation of a Self-Nanoemulsified Drug Delivery System of Oleanolic Acid

    Jia Xi;Qi Chang;Chak K. Chan;Zhao Yu Meng

  • Micro-Raman Spectroscopic Characterization of Nanosized TiO2 Powders Prepared by Vapor Hydrolysis

    Yun-Hong Zhang;Chak K. Chan;John F. Porter;Wei Guo

  • A comparative study of the organic matter in PM2.5 from three Chinese megacities in three different climatic zones

    Jialiang Feng;Min Hu;Chak Keung Chan;Pui Sang Lau

  • The water cycles of water-soluble organic salts of atmospheric importance

    Changgeng Peng;Chak K Chan

  • Heterogeneous SO2 Oxidation in Sulfate Formation by Photolysis of Particulate Nitrate

    Masao Gen;Ruifeng Zhang;Dan Dan Huang;Yongjie Li

Frequent Co-Authors

Xiaohong Yao
Xiaohong Yao Ocean University of China
Ming Fang
Ming Fang Hong Kong University of Science and Technology
Neng-Huei Lin
Neng-Huei Lin National Central University
Alex K. Y. Lee
Alex K. Y. Lee Environment and Climate Change Canada
Min Hu
Min Hu Peking University
Chi Ming Chan
Chi Ming Chan Hong Kong University of Science and Technology
Jian Zhen Yu
Jian Zhen Yu Hong Kong University of Science and Technology
Mattias Hallquist
Mattias Hallquist University of Gothenburg
John H. Seinfeld
John H. Seinfeld California Institute of Technology
Richard C. Flagan
Richard C. Flagan California Institute of Technology

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