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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 56 3582 3423 275 266 140 15762

Paul N. Williams publications per year

The chart shows the history of publications by Paul N. Williams between 1978 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Paul N. Williams published across 49 years, from 1978 to 2026, averaging 4 papers a year. Output peaked at 16 publications in 2020. 12 of the 197 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1978 to 2026. Vertical axis: number of publications, 0 to 16. Peak 16 publications in 2020. 1978: 1 publication 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 1 publication 1988: 0 publications 1989: 1 publication 1990: 1 publication 1991: 0 publications 1992: 0 publications 1993: 0 publications 1994: 1 publication 1995: 0 publications 1996: 1 publication 1997: 2 publications 1998: 3 publications 1999: 0 publications 2000: 1 publication 2001: 1 publication 2002: 1 publication 2003: 0 publications 2004: 1 publication 2005: 2 publications 2006: 6 publications 2007: 9 publications 2008: 10 publications 2009: 12 publications 2010: 8 publications 2011: 13 publications 2012: 7 publications 2013: 8 publications 2014: 5 publications 2015: 7 publications 2016: 10 publications 2017: 12 publications 2018: 11 publications 2019: 9 publications 2020: 16 publications 2021: 13 publications 2022: 8 publications 2023: 1 publication 2024: 3 publications 2025: 11 publications 2026: 1 publication
1978 2026

197 publications in total across all disciplines

View publications per year as a table
Paul N. Williams: publications per year, 1978 to 2026
Year Publications
1978 1
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 0
1986 0
1987 1
1988 0
1989 1
1990 1
1991 0
1992 0
1993 0
1994 1
1995 0
1996 1
1997 2
1998 3
1999 0
2000 1
2001 1
2002 1
2003 0
2004 1
2005 2
2006 6
2007 9
2008 10
2009 12
2010 8
2011 13
2012 7
2013 8
2014 5
2015 7
2016 10
2017 12
2018 11
2019 9
2020 16
2021 13
2022 8
2023 1
2024 3
2025 11
2026 1
Total 197
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Paul N. Williams publication distribution in Environmental Sciences in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Environmental Sciences in 2026. The highlighted bar marks where Paul N. Williams sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 66 bars. Horizontal axis: publications, 41–50 to 690+. Vertical axis: number of scientists, 0 to 617. Most scientists, 617, have 121–130 publications. The last bar groups every scientist with 690 publications or more. The highlighted bar, 131–140 publications, is where this scientist sits. 41–50 publications: 21 scientists 51–60 publications: 62 scientists 61–70 publications: 133 scientists 71–80 publications: 257 scientists 81–90 publications: 361 scientists 91–100 publications: 440 scientists 101–110 publications: 492 scientists 111–120 publications: 541 scientists 121–130 publications: 617 scientists 131–140 publications: 544 scientists 141–150 publications: 541 scientists 151–160 publications: 539 scientists 161–170 publications: 444 scientists 171–180 publications: 444 scientists 181–190 publications: 400 scientists 191–200 publications: 377 scientists 201–210 publications: 318 scientists 211–220 publications: 282 scientists 221–230 publications: 263 scientists 231–240 publications: 220 scientists 241–250 publications: 217 scientists 251–260 publications: 180 scientists 261–270 publications: 181 scientists 271–280 publications: 155 scientists 281–290 publications: 130 scientists 291–300 publications: 127 scientists 301–310 publications: 130 scientists 311–320 publications: 85 scientists 321–330 publications: 106 scientists 331–340 publications: 80 scientists 341–350 publications: 83 scientists 351–360 publications: 75 scientists 361–370 publications: 69 scientists 371–380 publications: 52 scientists 381–390 publications: 54 scientists 391–400 publications: 56 scientists 401–410 publications: 44 scientists 411–420 publications: 40 scientists 421–430 publications: 36 scientists 431–440 publications: 25 scientists 441–450 publications: 25 scientists 451–460 publications: 32 scientists 461–470 publications: 29 scientists 471–480 publications: 21 scientists 481–490 publications: 26 scientists 491–500 publications: 26 scientists 501–510 publications: 17 scientists 511–520 publications: 19 scientists 521–530 publications: 15 scientists 531–540 publications: 22 scientists 541–550 publications: 12 scientists 551–560 publications: 15 scientists 561–570 publications: 11 scientists 571–580 publications: 19 scientists 581–590 publications: 9 scientists 591–600 publications: 9 scientists 601–610 publications: 7 scientists 611–620 publications: 11 scientists 621–630 publications: 5 scientists 631–640 publications: 5 scientists 641–650 publications: 6 scientists 651–660 publications: 3 scientists 661–670 publications: 3 scientists 671–680 publications: 4 scientists 681–689 publications: 4 scientists 690+ publications: 100 scientists
41–50 publications 690+

This scientist: 140 publications — 36th percentile

36% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 690 publications or more.

View publications distribution as a table
Number of Environmental Sciences scientists by publication count, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
Publications Scientists This scientist
41–50 21
51–60 62
61–70 133
71–80 257
81–90 361
91–100 440
101–110 492
111–120 541
121–130 617
131–140 544 140
141–150 541
151–160 539
161–170 444
171–180 444
181–190 400
191–200 377
201–210 318
211–220 282
221–230 263
231–240 220
241–250 217
251–260 180
261–270 181
271–280 155
281–290 130
291–300 127
301–310 130
311–320 85
321–330 106
331–340 80
341–350 83
351–360 75
361–370 69
371–380 52
381–390 54
391–400 56
401–410 44
411–420 40
421–430 36
431–440 25
441–450 25
451–460 32
461–470 29
471–480 21
481–490 26
491–500 26
501–510 17
511–520 19
521–530 15
531–540 22
541–550 12
551–560 15
561–570 11
571–580 19
581–590 9
591–600 9
601–610 7
611–620 11
621–630 5
631–640 5
641–650 6
651–660 3
661–670 3
671–680 4
681–689 4
690+ 100
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Paul N. Williams D-index placement in Environmental Sciences in 2026

The chart shows the D-index (discipline H-index) distribution of Environmental Sciences scientists ranked by Research.com in 2026. The highlighted bar marks where Paul N. Williams sits on this spectrum.

No. of scientists
100 200 300
Bar chart with 97 bars. Horizontal axis: D-Index, 30 to 126+. Vertical axis: number of scientists, 0 to 348. Most scientists, 348, have 45 D-Index. The last bar groups every scientist with 126 D-Index or more. The highlighted bar, 56 D-Index, is where this scientist sits. 30 D-Index: 12 scientists 31 D-Index: 26 scientists 32 D-Index: 51 scientists 33 D-Index: 88 scientists 34 D-Index: 123 scientists 35 D-Index: 163 scientists 36 D-Index: 206 scientists 37 D-Index: 267 scientists 38 D-Index: 265 scientists 39 D-Index: 275 scientists 40 D-Index: 321 scientists 41 D-Index: 343 scientists 42 D-Index: 305 scientists 43 D-Index: 336 scientists 44 D-Index: 330 scientists 45 D-Index: 348 scientists 46 D-Index: 291 scientists 47 D-Index: 275 scientists 48 D-Index: 272 scientists 49 D-Index: 273 scientists 50 D-Index: 263 scientists 51 D-Index: 232 scientists 52 D-Index: 266 scientists 53 D-Index: 217 scientists 54 D-Index: 198 scientists 55 D-Index: 177 scientists 56 D-Index: 202 scientists 57 D-Index: 204 scientists 58 D-Index: 166 scientists 59 D-Index: 177 scientists 60 D-Index: 166 scientists 61 D-Index: 152 scientists 62 D-Index: 143 scientists 63 D-Index: 150 scientists 64 D-Index: 124 scientists 65 D-Index: 119 scientists 66 D-Index: 120 scientists 67 D-Index: 118 scientists 68 D-Index: 82 scientists 69 D-Index: 98 scientists 70 D-Index: 94 scientists 71 D-Index: 105 scientists 72 D-Index: 74 scientists 73 D-Index: 84 scientists 74 D-Index: 70 scientists 75 D-Index: 67 scientists 76 D-Index: 78 scientists 77 D-Index: 60 scientists 78 D-Index: 59 scientists 79 D-Index: 52 scientists 80 D-Index: 47 scientists 81 D-Index: 38 scientists 82 D-Index: 48 scientists 83 D-Index: 42 scientists 84 D-Index: 42 scientists 85 D-Index: 43 scientists 86 D-Index: 29 scientists 87 D-Index: 37 scientists 88 D-Index: 29 scientists 89 D-Index: 30 scientists 90 D-Index: 34 scientists 91 D-Index: 20 scientists 92 D-Index: 22 scientists 93 D-Index: 17 scientists 94 D-Index: 19 scientists 95 D-Index: 24 scientists 96 D-Index: 21 scientists 97 D-Index: 20 scientists 98 D-Index: 24 scientists 99 D-Index: 17 scientists 100 D-Index: 17 scientists 101 D-Index: 21 scientists 102 D-Index: 25 scientists 103 D-Index: 18 scientists 104 D-Index: 26 scientists 105 D-Index: 20 scientists 106 D-Index: 15 scientists 107 D-Index: 10 scientists 108 D-Index: 13 scientists 109 D-Index: 15 scientists 110 D-Index: 12 scientists 111 D-Index: 8 scientists 112 D-Index: 7 scientists 113 D-Index: 9 scientists 114 D-Index: 6 scientists 115 D-Index: 12 scientists 116 D-Index: 7 scientists 117 D-Index: 8 scientists 118 D-Index: 3 scientists 119 D-Index: 5 scientists 120 D-Index: 7 scientists 121 D-Index: 2 scientists 122 D-Index: 4 scientists 123 D-Index: 8 scientists 124 D-Index: 7 scientists 125 D-Index: 9 scientists 126+ D-Index: 92 scientists
30 D-Index 126+

This scientist: 56 D-Index — 63rd percentile

63% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 126 D-Index or more.

View D-Index distribution as a table
Number of Environmental Sciences scientists by D-index, Research.com 2026 ranking edition. Based on 9,676 ranked scientists.
D-Index Scientists This scientist
30 12
31 26
32 51
33 88
34 123
35 163
36 206
37 267
38 265
39 275
40 321
41 343
42 305
43 336
44 330
45 348
46 291
47 275
48 272
49 273
50 263
51 232
52 266
53 217
54 198
55 177
56 202 56
57 204
58 166
59 177
60 166
61 152
62 143
63 150
64 124
65 119
66 120
67 118
68 82
69 98
70 94
71 105
72 74
73 84
74 70
75 67
76 78
77 60
78 59
79 52
80 47
81 38
82 48
83 42
84 42
85 43
86 29
87 37
88 29
89 30
90 34
91 20
92 22
93 17
94 19
95 24
96 21
97 20
98 24
99 17
100 17
101 21
102 25
103 18
104 26
105 20
106 15
107 10
108 13
109 15
110 12
111 8
112 7
113 9
114 6
115 12
116 7
117 8
118 3
119 5
120 7
121 2
122 4
123 8
124 7
125 9
126+ 92
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Overview

Paul N. Williams is affiliated with Queen's University Belfast in the United Kingdom. Their research primarily focuses on Environmental Science and Agricultural and Biological Sciences, with notable contributions spanning over 75 publications in these fields.

The main areas of study include pollution, environmental chemistry, soil science, health, toxicology and mutagenesis, as well as agronomy and crop science. Specific topics investigated by Williams cover heavy metals in the environment, arsenic contamination and mitigation, soil carbon and nitrogen dynamics, agronomic practices and intercropping systems, soil and water nutrient dynamics, heavy metal exposure and toxicity, and coal and its by-products.

Williams' frequent coauthors include Jun Luo, Wen Fang, Manus Carey, Paul Cottney, and Ethel White. Collaboration with these researchers has been consistent, reflecting a network of contributors across multiple studies.

Key publication venues for Williams' work include Agronomy, Exposure and Health, Environmental Science & Technology, Journal of Hazardous Materials, and Analytical Chemistry. These journals have featured their research multiple times, with Agronomy hosting five publications, Exposure and Health and Environmental Science & Technology each featuring three, and Journal of Hazardous Materials and Analytical Chemistry each including two.

Recent papers by Paul N. Williams include:

  • Rice Grain Cadmium Concentrations in the Global Supply-Chain (2020, Exposure and Health)
  • Municipal solid waste compost: Global trends and biogeochemical cycling (2023, Soil & Environmental Health)
  • Gather.town: An opportunity for self-paced learning in a synchronous, distance-learning environment (2021, Compass Journal of Learning and Teaching)
  • Localized Intensification of Arsenic Release within the Emergent Rice Rhizosphere (2020, Environmental Science & Technology)
  • Rice Rhizospheric Effects on the Bioavailability of Toxic Trace Elements during Land Application of Biochar (2021, Environmental Science & Technology)

Williams has also contributed to book publications, including a 2024 work titled Spiritual Life, published by Cambridge University Press.

Best Publications

  • Variation in Arsenic Speciation and Concentration in Paddy Rice Related to Dietary Exposure

    Paul Williams;A H Price;A Raab;S A Hossain

  • Geographical Variation in Total and Inorganic Arsenic Content of Polished (White) Rice

    Andrew A. Meharg;Paul N. Williams;Eureka Adomako;Youssef Y. Lawgali

  • Greatly enhanced arsenic shoot assimilation in rice leads to elevated grain levels compared to wheat and barley

    Paul N. Williams;Antia Villada;Claire Deacon;Andrea Raab

  • Selenium in higher plants: understanding mechanisms for biofortification and phytoremediation

    Yong-Guan Zhu;Elizabeth A.H. Pilon-Smits;Fang-Jie Zhao;Paul N. Williams

  • Increase in Rice Grain Arsenic for Regions of Bangladesh Irrigating Paddies with Elevated Arsenic in Groundwaters

    Paul Nicholas Williams;Mohammad Ayub Islam;E. E. Adomako;Andrea Raab

  • Occurrence and Partitioning of Cadmium, Arsenic and Lead in Mine Impacted Paddy Rice: Hunan, China

    Paul N Williams;Ming Lei;Guoxin Sun;Qing Huang

  • Use of Carnobacterium sp. as a probiotic for Atlantic salmon (Salmo salar L.) and rainbow trout (Oncorhynchus mykiss, Walbaum).

    Peter Robertson;Colm O'Dowd;Charles Burrells;Paul Williams

  • Arsenic Sequestration in Iron Plaque, Its Accumulation and Speciation in Mature Rice Plants (Oryza Sativa L.)

    W. J. Liu;Y. G. Zhu;Y. Hu;P. N. Williams

  • High percentage inorganic arsenic content of mining impacted and nonimpacted Chinese rice.

    Y.G. Zhu;G. X. Sun;M. Lei;M. Teng

  • Variation in Rice Cadmium Related to Human Exposure

    Andrew A. Meharg;Gareth Norton;Claire Deacon;Paul Williams

  • Exposure to inorganic arsenic from rice: A global health issue?

    Yong-Guan Zhu;Paul N. Williams;Andrew A. Meharg

  • Inorganic arsenic in Chinese food and its cancer risk.

    Gang Li;Guo-Xin Sun;Paul N. Williams;Luis Nunes

  • Speciation and Localization of Arsenic in White and Brown Rice Grains

    Andrew A. Meharg;Enzo Lombi;Paul N. Williams;Kirk G. Scheckel

  • Phylogenetic analysis of intestinal microflora indicates a novel Mycoplasma phylotype in farmed and wild salmon.

    William E. Holben;P. Williams;M. Saarinen;Laura K. Sarkilahti

  • Market basket survey shows elevated levels of As in South Central U.S. processed rice compared to California: consequences for human dietary exposure.

    Paul Williams;A. Raab;J. Feldmann;A. A. Meharg

  • Inorganic Arsenic in Rice Bran and Its Products Are an Order of Magnitude Higher than in Bulk Grain

    Guo-Xin Sun;Guo-Xin Sun;Paul N. Williams;Anne-Marie Carey;Yong-Guan Zhu

  • Uptake and translocation of inorganic and methylated arsenic species by plants

    Andrea Raab;Paul N. Williams;Andrew Meharg;Jörg Feldmann

  • In situ, high-resolution imaging of labile phosphorus in sediments of a large eutrophic lake

    Shiming Ding;Chao Han;Yanping Wang;Lei Yao

  • Selenium characterization in the global rice supply chain

    Paul Nicholas Williams;Enzo Lombi;Enzo Lombi;Guo-Xin Sun;Guo-Xin Sun;Kirk Scheckel

  • Organic matter-solid phase interactions are critical for predicting arsenic release and plant uptake in Bangladesh paddy soils.

    Paul N. Williams;Hao Zhang;William Davison;Andrew A. Meharg

  • Market basket survey shows elevated levels of As in South Central U.S. processed rice compared to California

    P N Williams;A Raab;J Feldmann;A A Meharg

Frequent Co-Authors

Andrew A. Meharg
Andrew A. Meharg Queen's University Belfast
Yong-Guan Zhu
Yong-Guan Zhu Chinese Academy of Sciences
Andrea Raab
Andrea Raab International Committee of the Red Cross
Lena Q. Ma
Lena Q. Ma Zhejiang University
Hao Zhang
Hao Zhang Lancaster University
Fang-Jie Zhao
Fang-Jie Zhao Nanjing Agricultural University
William Davison
William Davison Lancaster University
Jörg Feldmann
Jörg Feldmann University of Aberdeen
Adam H. Price
Adam H. Price University of Aberdeen
Enzo Lombi
Enzo Lombi University of South Australia

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