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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 53 13328 11996 3490 2852 126 7328

David L. Ashley publications per year

The chart shows the history of publications by David L. Ashley between 1979 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. David L. Ashley published across 48 years, from 1979 to 2026, averaging 6.3 papers a year. Output peaked at 94 publications in 2024. 10 of the 304 publications appeared in the last two years.

No. of publications
20 40 60 80
Bar chart. Horizontal axis: year, 1979 to 2026. Vertical axis: number of publications, 0 to 94. Peak 94 publications in 2024. 1979: 1 publication 1980: 1 publication 1981: 1 publication 1982: 0 publications 1983: 1 publication 1984: 0 publications 1985: 0 publications 1986: 2 publications 1987: 4 publications 1988: 3 publications 1989: 5 publications 1990: 2 publications 1991: 3 publications 1992: 3 publications 1993: 0 publications 1994: 6 publications 1995: 11 publications 1996: 7 publications 1997: 5 publications 1998: 2 publications 1999: 7 publications 2000: 5 publications 2001: 2 publications 2002: 5 publications 2003: 8 publications 2004: 9 publications 2005: 12 publications 2006: 6 publications 2007: 4 publications 2008: 8 publications 2009: 5 publications 2010: 5 publications 2011: 4 publications 2012: 2 publications 2013: 4 publications 2014: 1 publication 2015: 0 publications 2016: 1 publication 2017: 0 publications 2018: 5 publications 2019: 9 publications 2020: 13 publications 2021: 7 publications 2022: 12 publications 2023: 9 publications 2024: 94 publications 2025: 9 publications 2026: 1 publication
1979 2026

304 publications in total across all disciplines

View publications per year as a table
David L. Ashley: publications per year, 1979 to 2026
Year Publications
1979 1
1980 1
1981 1
1982 0
1983 1
1984 0
1985 0
1986 2
1987 4
1988 3
1989 5
1990 2
1991 3
1992 3
1993 0
1994 6
1995 11
1996 7
1997 5
1998 2
1999 7
2000 5
2001 2
2002 5
2003 8
2004 9
2005 12
2006 6
2007 4
2008 8
2009 5
2010 5
2011 4
2012 2
2013 4
2014 1
2015 0
2016 1
2017 0
2018 5
2019 9
2020 13
2021 7
2022 12
2023 9
2024 94
2025 9
2026 1
Total 304
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David L. Ashley 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 David L. Ashley 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, 121–140 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: 126 publications — 7th percentile

7% 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
121–140 918 126
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
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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David L. Ashley 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 David L. Ashley 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, 52–53 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: 53 D-Index — 28th percentile

28% 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 53
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

David L. Ashley is affiliated with Georgia State University in the United States. The primary field of study for this researcher is Medicine, with a focus on subfields including Physiology, Public Health, Environmental and Occupational Health, Applied Psychology, Health, Toxicology and Mutagenesis, and Sociology and Political Science.

The research topics covered by David L. Ashley include:

  • Smoking Behavior and Cessation
  • Behavioral Health and Interventions
  • Obesity, Physical Activity, Diet
  • Air Quality and Health Impacts
  • Consumer Attitudes and Food Labeling
  • Media Influence and Health
  • Eating Disorders and Behaviors

Recent publications by David L. Ashley demonstrate a focus on tobacco control, e-cigarette use, and public health issues related to smoking. Notable papers include:

  • "Evolution of tobacco products: recent history and future directions," 2022, Tobacco Control
  • "IQOS debut in the USA: Philip Morris International's heated tobacco device introduced in Atlanta, Georgia," 2020, Tobacco Control
  • "Association of e-Cigarette Advertising, Parental Influence, and Peer Influence With US Adolescent e-Cigarette Use," 2022, JAMA Network Open
  • "I'm Bored and I'm Stressed": A Qualitative Study of Exclusive Smokers, ENDS Users, and Transitioning Smokers or ENDS Users in the Time of COVID-19," 2021, Nicotine & Tobacco Research
  • "What Motivates Smokers to Switch to ENDS? A Qualitative Study of Perceptions and Use," 2020, International Journal of Environmental Research and Public Health

Frequent co-authors collaborating with David L. Ashley include:

  • Lucy Popova
  • Scott R. Weaver
  • Katherine Henderson
  • Jidong Huang
  • Claire A. Spears

David L. Ashley's work is often published in the following venues:

  • Nicotine & Tobacco Research
  • Tobacco Control
  • International Journal of Environmental Research and Public Health
  • Preventive Medicine
  • UNC Libraries

Best Publications

  • Simultaneous analysis of 28 urinary VOC metabolites using ultra high performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry (UPLC-ESI/MSMS)

    K. Udeni Alwis;Benjamin C. Blount;April S. Britt;Dhrusti Patel

  • Determination of 14 Polycyclic Aromatic Hydrocarbons in Mainstream Smoke from Domestic Cigarettes

    Yan S Ding;Jenna S Trommel;Xizheng J Yan;David Ashley

  • Household exposures to drinking water disinfection by-products: whole blood trihalomethane levels

    Lorraine C Backer;David L Ashley;Michael A Bonin;Frederick L Cardinali

  • Botulinum neurotoxin detection and differentiation by mass spectrometry.

    John R. Barr;Hercules Moura;Anne E. Boyer;Adrian R. Woolfitt

  • Blood concentrations of volatile organic compounds in a nonoccupationally exposed US population and in groups with suspected exposure.

    D L Ashley;M A Bonin;F L Cardinali;J M McCraw

  • From the mouse to the mass spectrometer: detection and differentiation of the endoproteinase activities of botulinum neurotoxins A-G by mass spectrometry.

    Anne E Boyer;Hercules Moura;Adrian R Woolfitt;Suzanne R Kalb

  • Global surveillance of oral tobacco products: total nicotine, unionised nicotine and tobacco-specific N-nitrosamines

    Stephen B. Stanfill;Gregory N. Connolly;Liqin Zhang;Lily T. Jia

  • Cadmium, lead, and thallium in mainstream tobacco smoke particulate.

    R.S. Pappas;G.M. Polzin;L. Zhang;C.H. Watson

  • Quantification of 31 volatile organic compounds in whole blood using solid-phase microextraction and gas chromatography-mass spectrometry.

    Benjamin C. Blount;Robert J. Kobelski;David O. McElprang;David L. Ashley

  • Influence of Tap Water Quality and Household Water Use Activities on Indoor Air and Internal Dose Levels of Trihalomethanes

    John R. Nuckols;David L. Ashley;Christopher Lyu;Sydney M. Gordon

  • An improved analysis for chlorinated pesticides and polychlorinated biphenyls (PCBs) in human and bovine sera using solid-phase extraction.

    John W. Brock;Virlyn W. Burse;David L. Ashley;Allah R. Najam

  • Determination of 10 carcinogenic polycyclic aromatic hydrocarbons in mainstream cigarette smoke

    Yan S Ding;David L Ashley;Clifford H Watson

  • Methyl Tertiary Butyl Ether in Human Blood after Exposure to Oxygenated Fuel in Fairbanks, Alaska

    Ronald L. Moolenaar;Brockton J. Hefflin;David L. Ashley;John P. Middaugh

  • Determination of tar, nicotine, and carbon monoxide yields in the mainstream smoke of selected international cigarettes.

    A M Calafat;G M Polzin;J Saylor;P Richter

  • Levels of Tobacco-Specific Nitrosamines and Polycyclic Aromatic Hydrocarbons in Mainstream Smoke from Different Tobacco Varieties

    Yan S Ding;Liqin Zhang;Ram B Jain;Ntasha Jain

  • Cadmium, lead, and thallium in smoke particulate from counterfeit cigarettes compared to authentic US brands.

    R.S. Pappas;G.M. Polzin;C.H. Watson;D.L. Ashley

  • Analysis of Volatile Organic Compounds in Mainstream Cigarette Smoke

    Gregory M. Polzin;Rachel E. Kosa-Maines;David L. Ashley;Clifford H. Watson

  • Children's exposure to volatile organic compounds as determined by longitudinal measurements in blood

    Ken Sexton;John L. Adgate;Timothy R. Church;David L. Ashley

  • Comparison of trihalomethanes in tap water and blood.

    Amy M. Miles;Philip C. Singer;David L. Ashley;Michele C. Lynberg

  • Determination of 14 polycyclic aromatic hydrocarbons in mainstream smoke from U.S. brand and non-U.S. brand cigarettes.

    Yan S Ding;Xizheng J Yan;Ram B Jain;Eugene Lopp

Frequent Co-Authors

Clifford H. Watson
Clifford H. Watson Centers for Disease Control and Prevention
Benjamin C. Blount
Benjamin C. Blount Centers for Disease Control and Prevention
Antonia M. Calafat
Antonia M. Calafat Centers for Disease Control and Prevention
John R. Barr
John R. Barr Centers for Disease Control and Prevention
Dana B. Barr
Dana B. Barr Emory University
Donald G. Patterson
Donald G. Patterson Centers for Disease Control and Prevention
Philip C. Singer
Philip C. Singer University of North Carolina at Chapel Hill
Mauricio Hernández-Avila
Mauricio Hernández-Avila Johns Hopkins University
Joachim D. Pleil
Joachim D. Pleil University of North Carolina at Chapel Hill
Isabelle Romieu
Isabelle Romieu Emory University

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