World's Best Scientists 2026 revealed!
Tomas Angel DelValls

Tomas Angel DelValls

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Environmental Sciences 55 3922 3749 100 100 207 8582

Tomas Angel DelValls publications per year

The chart shows the history of publications by Tomas Angel DelValls between 1996 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Tomas Angel DelValls published across 30 years, from 1996 to 2025, averaging 7.3 papers a year. Output peaked at 18 publications in 2009. 11 of the 220 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1996 to 2025. Vertical axis: number of publications, 0 to 18. Peak 18 publications in 2009. 1996: 1 publication 1997: 0 publications 1998: 7 publications 1999: 2 publications 2000: 2 publications 2001: 2 publications 2002: 4 publications 2003: 8 publications 2004: 11 publications 2005: 9 publications 2006: 17 publications 2007: 16 publications 2008: 17 publications 2009: 18 publications 2010: 6 publications 2011: 9 publications 2012: 16 publications 2013: 1 publication 2014: 5 publications 2015: 13 publications 2016: 15 publications 2017: 12 publications 2018: 6 publications 2019: 3 publications 2020: 1 publication 2021: 3 publications 2022: 2 publications 2023: 3 publications 2024: 7 publications 2025: 4 publications
1996 2025

220 publications in total across all disciplines

View publications per year as a table
Tomas Angel DelValls: publications per year, 1996 to 2025
Year Publications
1996 1
1997 0
1998 7
1999 2
2000 2
2001 2
2002 4
2003 8
2004 11
2005 9
2006 17
2007 16
2008 17
2009 18
2010 6
2011 9
2012 16
2013 1
2014 5
2015 13
2016 15
2017 12
2018 6
2019 3
2020 1
2021 3
2022 2
2023 3
2024 7
2025 4
Total 220
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Tomas Angel DelValls 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 Tomas Angel DelValls 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, 201–210 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: 207 publications — 67th percentile

67% 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
141–150 541
151–160 539
161–170 444
171–180 444
181–190 400
191–200 377
201–210 318 207
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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Tomas Angel DelValls 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 Tomas Angel DelValls 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, 55 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: 55 D-Index — 61st percentile

61% 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 55
56 202
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

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Ecosystem
  • Environmental chemistry

Tomás Ángel DelValls mostly deals with Environmental chemistry, Contamination, Estuary, Water pollution and Bay. His studies in Environmental chemistry integrate themes in fields like Glutathione peroxidase, Glutathione reductase and Bioavailability. His Contamination study which covers Pollutant that intersects with Hazardous waste, Dredging and Organic matter.

His biological study spans a wide range of topics, including Chemical speciation, Heavy metals, Environmental engineering and Pollution. The various areas that Tomás Ángel DelValls examines in his Bay study include Littoral zone, Sediment chemistry and Ecotoxicology. His Ecotoxicology research incorporates themes from Amphipoda and Fishery.

His most cited work include:

  • The pH of buffers based on 2-amino-2-hydroxymethyl-1,3-propanediol (‘tris’) in synthetic sea water (133 citations)
  • Using sediment quality guidelines for dredged material management in commercial ports from Spain (111 citations)
  • Bioavailability of heavy metals bound to estuarine sediments as a function of pH and salinity values (104 citations)

What are the main themes of his work throughout his whole career to date?

Tomás Ángel DelValls focuses on Environmental chemistry, Ecology, Ecotoxicology, Contamination and Estuary. His research integrates issues of Seawater, Benthic zone, Bioassay and Bioavailability in his study of Environmental chemistry. His study in Ecotoxicology is interdisciplinary in nature, drawing from both Amphipoda, Corophium volutator, Acute toxicity, Hepatopancreas and Cadmium.

His Contamination research is multidisciplinary, relying on both Littoral zone, Bay, Organic matter and Pollutant. His Estuary research includes elements of Environmental engineering, Water pollution, Ecosystem, Pollution and Heavy metals. The study incorporates disciplines such as Total organic carbon and Fishery in addition to Water pollution.

He most often published in these fields:

  • Environmental chemistry (47.90%)
  • Ecology (24.37%)
  • Ecotoxicology (27.73%)

What were the highlights of his more recent work (between 2014-2021)?

  • Environmental chemistry (47.90%)
  • Seawater (10.08%)
  • Ecology (24.37%)

In recent papers he was focusing on the following fields of study:

His primary areas of study are Environmental chemistry, Seawater, Ecology, Ocean acidification and Ecotoxicology. His work deals with themes such as Bay, Contamination, Bioavailability, Wastewater and Benthic zone, which intersect with Environmental chemistry. He applies his multidisciplinary studies on Contamination and Immobilization test in his research.

His research in Ecology focuses on subjects like Carbonate, which are connected to Amphipoda. The Ocean acidification study which covers Estuary that intersects with pCO2 and Polychaete. Ecotoxicology is frequently linked to Toxicity in his study.

Between 2014 and 2021, his most popular works were:

  • Assessment of metal contamination, bioavailability, toxicity and bioaccumulation in extreme metallic environments (Iberian Pyrite Belt) using Corbicula fluminea (44 citations)
  • Toxicological evaluation of sediment samples spiked with human pharmaceutical products: Energy status and neuroendocrine effects in marine polychaetes Hediste diversicolor. (29 citations)
  • Using remote sensing as a support to the implementation of the European Marine Strategy Framework Directive in SW Portugal (26 citations)

In his most recent research, the most cited papers focused on:

  • Ecology
  • Ecosystem
  • Biochemistry

His scientific interests lie mostly in Environmental chemistry, Seawater, Ocean acidification, Bioavailability and Ecotoxicology. His Environmental chemistry research incorporates themes from Hediste diversicolor and Metabolism. His study looks at the intersection of Seawater and topics like Carbon dioxide with Zinc, Ecosystem, Toxicity and Perna perna.

The concepts of his Ocean acidification study are interwoven with issues in Carbon capture and storage, Environmental engineering, Larva and Mussel. The Bioavailability study combines topics in areas such as Lipid peroxidation and Antioxidant. His biological study spans a wide range of topics, including Benthic zone and Biota.

Best Publications

  • Acid mine drainage pollution in the Tinto and Odiel rivers (Iberian Pyrite Belt, SW Spain) and bioavailability of the transported metals to the Huelva Estuary

    José Miguel Nieto;Aguasanta M. Sarmiento;Manuel Olías;Carlos R. Canovas

  • The pH of buffers based on 2-amino-2-hydroxymethyl-1,3-propanediol (‘tris’) in synthetic sea water

    T.A. DelValls;A.G. Dickson

  • Histological biomarkers in liver and gills of juvenile Solea senegalensis exposed to contaminated estuarine sediments: A weighted indices approach

    Pedro M. Costa;Mário S. Diniz;Sandra Caeiro;Sandra Caeiro;Jorge Lobo

  • Site selection for shellfish aquaculture by means of GIS and farm-scale models, with an emphasis on data-poor environments

    Claudio Silva;João G. Ferreira;Suzanne B. Bricker;Tomás Ángel DelValls

  • Bioavailability of heavy metals bound to estuarine sediments as a function of pH and salinity values

    I. Riba;E. García-Luque;J. Blasco;T. A. DelValls

  • Using sediment quality guidelines for dredged material management in commercial ports from Spain

    M.C. Casado-Martínez;J.L. Buceta;M.J. Belzunce;T.A. DelValls

  • Bioavailability, oxidative stress, neurotoxicity and genotoxicity of pharmaceuticals bound to marine sediments. The use of the polychaete Hediste diversicolor as bioindicator species.

    L.A. Maranho;R.M. Baena-Nogueras;P.A. Lara-Martín;T.A. DelValls

  • Influence of the Aznalcóllar mining spill on the vertical distribution of heavy metals in sediments from the Guadalquivir estuary (SW Spain)

    I Riba;T.A DelValls;J.M Forja;A Gómez-Parra

  • Determining contamination sources in marine sediments using multivariate analysis

    T.Á DelValls;J.M Forja;E González-Mazo;A Gómez-Parra

  • The influence of pH and salinity on the toxicity of heavy metals in sediment to the estuarine clam Ruditapes philippinarum

    Inmaculada Riba;T. Ángel Delvalls;Jesús M. Forja;Abelardo Gómez-Parra

  • Development of site-specific sediment quality guidelines for North and South Atlantic littoral zones: comparison against national and international sediment quality benchmarks.

    R. B. Choueri;A. Cesar;Denis Moledo de Souza Abessa;R. J. Torres

  • General stress, detoxification pathways, neurotoxicity and genotoxicity evaluated in Ruditapes philippinarum exposed to human pharmaceuticals.

    Gabriela V. Aguirre-Martínez;T. Angel DelValls;M. Laura Martín-Díaz

  • Site-specific sediment quality values for the Gulf of Cádiz (Spain) and San Francisco Bay (USA), using the sediment quality triad and multivariate analysis

    T. A. DelValls;P.M. Chapman

  • Comparative sediment quality assessment in different littoral ecosystems from Spain (Gulf of Cadiz) and Brazil (Santos and São Vicente estuarine system).

    A. Cesar;R.B. Choueri;I. Riba;I. Riba;C. Morales-Caselles;C. Morales-Caselles

  • Chemical and ecotoxicological guidelines for managing disposal of dredged material

    T.A. DelValls;A. Andres;M.J. Belzunce;J.L. Buceta

  • Biological effects-based sediment quality in ecological risk assessment for European waters

    Pieter J. den Besten;Eric de Deckere;Marc P. Babut;Beth Power

  • Field validation of a battery of biomarkers to assess sediment quality in Spanish ports.

    M.L. Martín-Díaz;J. Blasco;D. Sales;T.A. DelValls

  • Early Contamination by Heavy Metals of the Guadalquivir Estuary After the Aznalcóllar Mining Spill (SW Spain)

    A Gómez-Parra;J.M Forja;T.A DelValls;I Sáenz

  • Genotoxic damage in Solea senegalensis exposed to sediments from the Sado Estuary (Portugal): Effects of metallic and organic contaminants

    Pedro M. Costa;Jorge Lobo;Sandra Caeiro;Sandra Caeiro;Martins Martins

  • Biomarkers Study for Sediment Quality Assessment in Spanish Ports Using the Crab Carcinus maenas and the Clam Ruditapes philippinarum

    M.L. Martín-Díaz;J. Blasco;D. Sales;T.A. DelValls

Frequent Co-Authors

Inmaculada Riba
Inmaculada Riba University of Cádiz
Julián Blasco
Julián Blasco Spanish National Research Council
Abelardo Gómez-Parra
Abelardo Gómez-Parra University of Cádiz
Denis Moledo de Souza Abessa
Denis Moledo de Souza Abessa Sao Paulo State University
Diego Sales
Diego Sales University of Cádiz
Ricardo Beiras
Ricardo Beiras Universidade de Vigo
Carlos Vale
Carlos Vale University of Porto
François Gagné
François Gagné Environment and Climate Change Canada
Pablo A. Lara-Martín
Pablo A. Lara-Martín University of Cádiz
Peter M. Chapman
Peter M. Chapman Golder Associates (Canada)

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