World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
47
Citations
6515
World Ranking
15791
National Ranking
3953

Clifford H. Watson 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 Clifford H. Watson sits on this spectrum.

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 publications 1,295+

This scientist: 156 publications — 16th percentile

16% of scientists in this discipline score the same or lower.

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

Clifford H. Watson 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 Clifford H. Watson sits on this spectrum.

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 D-Index 159+

This scientist: 47 D-Index — 14th percentile

14% of scientists in this discipline score the same or lower.

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

Overview

Clifford H. Watson is affiliated with the Centers for Disease Control and Prevention in the United States. Their research focuses primarily on fields spanning Medicine and Environmental Science, addressing topics related to health impacts and toxicology.

Their work spans across several interconnected subfields, including Health, Toxicology and Mutagenesis, Physiology, Molecular Biology, Public Health, Environmental and Occupational Health, and Plant Science.

Watson's research covers a variety of topics, notably:

  • Smoking Behavior and Cessation
  • Air Quality and Health Impacts
  • Indoor Air Quality and Microbial Exposure
  • Advanced Chemical Sensor Technologies
  • Toxic Organic Pollutants Impact
  • Obesity, Physical Activity, Diet
  • Biochemical Analysis and Sensing Techniques

Their recent notable publications include:

  • "Characterization of Total and Unprotonated (Free) Nicotine Content of Nicotine Pouch Products", 2021, Nicotine & Tobacco Research
  • "Toxic Metals in Liquid and Aerosol from Pod-Type Electronic Cigarettes", 2020, Journal of Analytical Toxicology
  • "Toxic Metal-Containing Particles in Aerosols from Pod-Type Electronic Cigarettes", 2020, Journal of Analytical Toxicology
  • "Chemical analysis of snus products from the United States and northern Europe", 2020, PLoS ONE
  • "The Impact of Exclusive Use of Very Low Nicotine Cigarettes on Compensatory Smoking: An Inpatient Crossover Clinical Trial", 2020, Cancer Epidemiology Biomarkers & Prevention

Frequent co-authors collaborating with Watson include:

  • Liza Valentín-Blasini
  • Benjamin C. Blount
  • Stephen B. Stanfill
  • Roberto Bravo Cardenas
  • Hang Tran

The research outputs are published across various scientific venues, with multiple contributions to:

  • Chemical Research in Toxicology
  • Journal of Analytical Toxicology
  • Frontiers in Chemistry
  • Tobacco Control
  • Nicotine & Tobacco Research

This profile highlights a multidisciplinary approach with a strong focus on toxicological analysis related to tobacco products, environmental exposures, and public health implications. The diversity in venues and co-authors indicates active engagement within the scientific community addressing these topics.

Best Publications

  • The analysis of water‐soluble polymers by matrix‐assisted laser desorption time‐of‐flight mass spectrometry

    P. O. Danis;D. E. Karr;F. Mayer;A. Holle

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

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

  • Chemical Composition and Evaluation of Nicotine, Tobacco Alkaloids, pH, and Selected Flavors in E-Cigarette Cartridges and Refill Solutions

    Joseph G. Lisko;Hang Tran;Stephen B. Stanfill;Benjamin C. Blount

  • Polycyclic Aromatic Hydrocarbons in the Mainstream Smoke of Popular U.S. Cigarettes.

    An T. Vu;Kenneth M. Taylor;Matthew R. Holman;Yan S. Ding

  • 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

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

    Yan S Ding;David L Ashley;Clifford H Watson

  • 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

  • FTMS studies of mass-selected, large cluster ions produced by direct laser vaporization

    Stephen W McElvany;H.H Nelson;Andrew P Baronavski;Clifford H Watson

  • Toxic Metal Concentrations in Mainstream Smoke from Cigarettes Available in the USA

    R. Steven Pappas;Mark R. Fresquez;Naudia Martone;Clifford H. Watson

  • Proton Affinities of Eight Matrices Used for Matrix‐assisted Laser Desorption/Ionization

    Richard D. Burton;Clifford H. Watson;John R. Eyler;G. Lisa Lang

  • 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

  • Simultaneous determination of five tobacco-specific nitrosamines in mainstream cigarette smoke by isotope dilution liquid chromatography/electrospray ionization tandem mass spectrometry.

    Weijia Wu;David L Ashley;Clifford H Watson

  • Mainstream Smoke Levels of Volatile Organic Compounds in 50 U.S. Domestic Cigarette Brands Smoked With the ISO and Canadian Intense Protocols.

    Daniel Y. Pazo;Fallon Moliere;Maureen M. Sampson;Christopher M. Reese

  • Kinetics and mechanism of nucleophilic displacements with heterocycles as leaving groups. 26. Collisionally activated dissociation of N-alkylpyridinium cations to pyridine and alkyl cations in the gas phase

    Alan R. Katritzky;Clifford H. Watson;Zofia Dega-Szafran;John R. Eyler

  • Simultaneous determination of six mercapturic acid metabolites of volatile organic compounds in human urine.

    Yan S Ding;Benjamin C Blount;Liza Valentin-Blasini;Heather S Applewhite

  • Determination of nicotine and other minor alkaloids in international cigarettes by solid-phase microextraction and gas chromatography/mass spectrometry.

    Weijia Wu;David L Ashley;Clifford H Watson

Frequent Co-Authors

John R. Eyler
John R. Eyler University of Florida
David L. Ashley
David L. Ashley Georgia State University
Benjamin C. Blount
Benjamin C. Blount Centers for Disease Control and Prevention
Alan R. Katritzky
Alan R. Katritzky University of Florida
Dorothy K. Hatsukami
Dorothy K. Hatsukami University of Minnesota
Antonia M. Calafat
Antonia M. Calafat Centers for Disease Control and Prevention
Neal L. Benowitz
Neal L. Benowitz University of California, San Francisco
Mati Karelson
Mati Karelson University of Tartu
Brian A. King
Brian A. King Centers for Disease Control and Prevention
Eric C. Donny
Eric C. Donny Wake Forest University

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