More Than a Ranking

US Environmental Protection Agency Scientists Natural Sciences / Chemical Sciences Rankings 2024

The international independent ranking organisation AD Scientific Index is more than an ordinary "Ranking". The "AD Scientific Index" analyses the academic work of scientists using the H-index, i10 index and number of citations, and provides results that can be used to evaluate the productivity and efficiency of individuals and institutions. In addition to ranking according to "total H-index" for individuals and institutions, you can also see the ranking and analyses according to "last 6 years H-index", "total i10 Productivity index", "last 6 years i10 Productivity index", "total citations" and "last 6 years citations" only in "AD Scientific Index". See also: Subject Rankings, University Subject Rankings and Universities Rankings 2024 (Sort by: Last 6 years H Index). Click here for individual or institutional registration.

Country Name

Total 30 scientist

List without CERN, Statistical Data etc.

Sort by last 6 years H Index

Antony John Williams

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Chemistry

Cheminformatics

Nuclear Magnetic Resonance

Drug Discovery

H-Index Rankings

University / Institution:

# 6

Country:

# 14,111

Region:

# 15,614

World:

# 33,627

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.701

i10 Index

Total:

248

Last 6 Year:

134

Last 6 Year/Total:

0.540

Citation

Total:

17,537

Last 6 Year:

9,530

Last 6 Year/Total:

0.543

Ann M Richard

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Computational chemistry

cheminformatics

toxicology

H-Index Rankings

University / Institution:

# 8

Country:

# 16,155

Region:

# 17,939

World:

# 39,174

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.625

i10 Index

Total:

112

Last 6 Year:

Last 6 Year/Total:

0.679

Citation

Total:

16,039

Last 6 Year:

8,370

Last 6 Year/Total:

0.522

John H Offenberg

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Atmospheric Chemistry

H-Index Rankings

University / Institution:

# 13

Country:

# 21,873

Region:

# 24,426

World:

# 55,220

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.596

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.820

Citation

Total:

11,499

Last 6 Year:

3,899

Last 6 Year/Total:

0.339

Havala Ot Pye

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Aerosol physics and chemistry

Air quality

H-Index Rankings

University / Institution:

# 31

Country:

# 34,557

Region:

# 38,863

World:

# 94,053

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.935

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.971

Citation

Total:

7,862

Last 6 Year:

5,413

Last 6 Year/Total:

0.689

Michael Schock

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

drinking water corrosion

aquatic chemistry of inorganics

lead

copper

geochemical equilibria

H-Index Rankings

University / Institution:

# 40

Country:

# 42,215

Region:

# 47,611

World:

# 119,439

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.667

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.621

Citation

Total:

6,078

Last 6 Year:

2,202

Last 6 Year/Total:

0.362

Endalkachew Sahle-Demessie

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Nanotechnolgy

water pollution

green chemistry

H-Index Rankings

University / Institution:

# 50

Country:

# 46,667

Region:

# 52,707

World:

# 134,791

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.575

i10 Index

Total:

104

Last 6 Year:

Last 6 Year/Total:

0.596

Citation

Total:

4,808

Last 6 Year:

2,096

Last 6 Year/Total:

0.436

Michael Gonzalez

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Sustainable Chemistry

H-Index Rankings

University / Institution:

# 82

Country:

# 64,657

Region:

# 73,169

World:

# 199,008

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.697

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.615

Citation

Total:

6,038

Last 6 Year:

3,365

Last 6 Year/Total:

0.557

Todd Luxton

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

geochemistry

soils

Nanoparticles

X-ray Absorption Spectroscopy

Heavy Metals

H-Index Rankings

University / Institution:

# 113

Country:

# 86,542

Region:

# 97,987

World:

# 281,725

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.852

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.891

Citation

Total:

4,754

Last 6 Year:

2,304

Last 6 Year/Total:

0.485

James Mccord

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Mass Spectrometry

Environmental Chemistry

PFAS

Non-Targeted Analysis

H-Index Rankings

University / Institution:

# 125

Country:

# 90,463

Region:

# 102,419

World:

# 297,365

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.923

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

1.000

Citation

Total:

2,930

Last 6 Year:

2,869

Last 6 Year/Total:

0.979

Todd Martin

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Computational toxicology

alternatives assessment

QSAR

H-Index Rankings

University / Institution:

# 130

Country:

# 92,078

Region:

# 104,220

World:

# 303,241

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.808

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.906

Citation

Total:

3,898

Last 6 Year:

2,532

Last 6 Year/Total:

0.650

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Roxanne Johnson

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

wetland and sea level rise

H-Index Rankings

University / Institution:

# 134

Country:

# 93,346

Region:

# 105,670

World:

# 308,610

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.654

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.362

Citation

Total:

7,630

Last 6 Year:

2,390

Last 6 Year/Total:

0.313

Theran Riedel

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

atmospheric chemistry

analytical chemistry

H-Index Rankings

University / Institution:

# 140

Country:

# 100,822

Region:

# 114,131

World:

# 337,789

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.958

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.966

Citation

Total:

3,136

Last 6 Year:

1,536

Last 6 Year/Total:

0.490

Brett R Blackwell

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Environmental chemistry and toxicology

H-Index Rankings

University / Institution:

# 141

Country:

# 101,014

Region:

# 114,349

World:

# 338,650

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.917

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.902

Citation

Total:

1,959

Last 6 Year:

1,600

Last 6 Year/Total:

0.817

Brett Gantt

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Atmospheric Chemistry

Aerosols

Air Quality

H-Index Rankings

University / Institution:

# 154

Country:

# 108,800

Region:

# 123,076

World:

# 368,568

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.826

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.929

Citation

Total:

2,032

Last 6 Year:

1,223

Last 6 Year/Total:

0.602

Susan T Glassmeyer

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

environmental analytical chemistry

H-Index Rankings

University / Institution:

# 156

Country:

# 109,320

Region:

# 123,662

World:

# 370,878

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.783

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.655

Citation

Total:

3,688

Last 6 Year:

1,860

Last 6 Year/Total:

0.504

Emma D'Ambro

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Atmospheric Chemistry

H-Index Rankings

University / Institution:

# 164

Country:

# 112,584

Region:

# 127,343

World:

# 384,052

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

1.000

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

1.000

Citation

Total:

2,054

Last 6 Year:

1,602

Last 6 Year/Total:

0.780

Seth R Newton

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Environmental Chemistry

Analytical Chemistry

High Resolution Mass Spectrometry

Perfluoroalkyl

H-Index Rankings

University / Institution:

# 184

Country:

# 126,667

Region:

# 143,110

World:

# 439,379

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

1.000

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

1.000

Citation

Total:

1,969

Last 6 Year:

1,715

Last 6 Year/Total:

0.871

Allison L Phillips

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

environmental chemistry

mass spectometry

H-Index Rankings

University / Institution:

# 185

Country:

# 126,675

Region:

# 143,119

World:

# 439,399

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

1.000

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

1.000

Citation

Total:

1,811

Last 6 Year:

1,740

Last 6 Year/Total:

0.961

Angela Batt

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Environmental Analytical Chemistry

H-Index Rankings

University / Institution:

# 195

Country:

# 130,417

Region:

# 147,325

World:

# 454,056

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.800

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.760

Citation

Total:

4,292

Last 6 Year:

1,846

Last 6 Year/Total:

0.430

Buchi Reddy Vaddula

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Sustainable Chemistry

Medicinal Chemistry

Organic Chemistry

H-Index Rankings

University / Institution:

# 196

Country:

# 130,531

Region:

# 147,459

World:

# 454,382

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.800

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.833

Citation

Total:

1,882

Last 6 Year:

768

Last 6 Year/Total:

0.408

Shibin Li

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Environmental Toxicology

Environmental chemistry

Risk assessment

H-Index Rankings

University / Institution:

# 211

Country:

# 137,963

Region:

# 155,733

World:

# 484,035

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.842

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.905

Citation

Total:

1,331

Last 6 Year:

711

Last 6 Year/Total:

0.534

Edward M Heithmar

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Environmental analytical chemistry

environmental implications of nanomaterials

single particle-ICPMS

trace element speciation

H-Index Rankings

University / Institution:

# 228

Country:

# 151,138

Region:

# 170,486

World:

# 537,835

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.389

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.227

Citation

Total:

1,316

Last 6 Year:

212

Last 6 Year/Total:

0.161

Hannah K Liberatore

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

Environmental Chemistry

Analytical Chemistry

Non-Targeted Analysis

H-Index Rankings

University / Institution:

# 229

Country:

# 151,758

Region:

# 171,154

World:

# 540,415

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

1.000

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

1.000

Citation

Total:

1,105

Last 6 Year:

1,058

Last 6 Year/Total:

0.957

Elin Ulrich

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

environmental analytical chemistry

H-Index Rankings

University / Institution:

# 234

Country:

# 156,173

Region:

# 176,047

World:

# 557,051

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.824

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.773

Citation

Total:

2,694

Last 6 Year:

1,268

Last 6 Year/Total:

0.471

David Katz

US Environmental Protection Agency

United States

Natural Sciences / Chemical Sciences

environmental chemistry

H-Index Rankings

University / Institution:

# 240

Country:

# 158,678

Region:

# 178,853

World:

# 567,725

H-Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.706

i10 Index

Total:

Last 6 Year:

Last 6 Year/Total:

0.650

Citation

Total:

825

Last 6 Year:

520

Last 6 Year/Total:

0.630

				AD Scientific Index - World Scientists Rankings - 2024				H INDEX			i10 INDEX			CITATION
University / Institution	Country	Region	World	Name	Country	University / Institution	Subject	Total	Last 6 year	Last 6 year/total	Total	Last 6 year	Last 6 year/total	Total	Last 6 year	Last 6 year/total
6	14,111	15,614	33,627	Antony John Williams	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Chemistry \| Cheminformatics \| Nuclear Magnetic Resonance \| Drug Discovery \|	67	47	0.701	248	134	0.540	17,537	9,530	0.543
8	16,155	17,939	39,174	Ann M Richard	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Computational chemistry \| cheminformatics \| toxicology \|	64	40	0.625	112	76	0.679	16,039	8,370	0.522
13	21,873	24,426	55,220	John H Offenberg	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Atmospheric Chemistry \|	57	34	0.596	89	73	0.820	11,499	3,899	0.339
31	34,557	38,863	94,053	Havala Ot Pye	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Aerosol physics and chemistry \| Air quality \|	46	43	0.935	68	66	0.971	7,862	5,413	0.689
40	42,215	47,611	119,439	Michael Schock	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences drinking water corrosion \| aquatic chemistry of inorganics \| lead \| copper \| geochemical equilibria \|	42	28	0.667	87	54	0.621	6,078	2,202	0.362
50	46,667	52,707	134,791	Endalkachew Sahle-Demessie	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Nanotechnolgy \| water pollution \| green chemistry \|	40	23	0.575	104	62	0.596	4,808	2,096	0.436
82	64,657	73,169	199,008	Michael Gonzalez	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Sustainable Chemistry \|	33	23	0.697	65	40	0.615	6,038	3,365	0.557
113	86,542	97,987	281,725	Todd Luxton	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences geochemistry \| soils \| Nanoparticles \| X-ray Absorption Spectroscopy \| Heavy Metals \|	27	23	0.852	46	41	0.891	4,754	2,304	0.485
125	90,463	102,419	297,365	James Mccord	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Mass Spectrometry \| Environmental Chemistry \| PFAS \| Non-Targeted Analysis \|	26	24	0.923	43	43	1.000	2,930	2,869	0.979
130	92,078	104,220	303,241	Todd Martin	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Computational toxicology \| alternatives assessment \| QSAR \|	26	21	0.808	32	29	0.906	3,898	2,532	0.650
			Click for INSTITUTIONAL BULK REGISTRATION and PREMIUM MEMBERSHIP advantages
134	93,346	105,670	308,610	Roxanne Johnson	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences wetland and sea level rise \|	26	17	0.654	58	21	0.362	7,630	2,390	0.313
140	100,822	114,131	337,789	Theran Riedel	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences atmospheric chemistry \| analytical chemistry \|	24	23	0.958	29	28	0.966	3,136	1,536	0.490
141	101,014	114,349	338,650	Brett R Blackwell	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Environmental chemistry and toxicology \|	24	22	0.917	41	37	0.902	1,959	1,600	0.817
154	108,800	123,076	368,568	Brett Gantt	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Atmospheric Chemistry \| Aerosols \| Air Quality \|	23	19	0.826	28	26	0.929	2,032	1,223	0.602
156	109,320	123,662	370,878	Susan T Glassmeyer	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences environmental analytical chemistry \|	23	18	0.783	29	19	0.655	3,688	1,860	0.504
164	112,584	127,343	384,052	Emma D'Ambro	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Atmospheric Chemistry \|	22	22	1.000	25	25	1.000	2,054	1,602	0.780
184	126,667	143,110	439,379	Seth R Newton	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Environmental Chemistry \| Analytical Chemistry \| High Resolution Mass Spectrometry \| Perfluoroalkyl \|	20	20	1.000	25	25	1.000	1,969	1,715	0.871
185	126,675	143,119	439,399	Allison L Phillips	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences environmental chemistry \| mass spectometry \|	20	20	1.000	25	25	1.000	1,811	1,740	0.961
195	130,417	147,325	454,056	Angela Batt	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Environmental Analytical Chemistry \|	20	16	0.800	25	19	0.760	4,292	1,846	0.430
196	130,531	147,459	454,382	Buchi Reddy Vaddula	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Sustainable Chemistry \| Medicinal Chemistry \| Organic Chemistry \|	20	16	0.800	24	20	0.833	1,882	768	0.408
211	137,963	155,733	484,035	Shibin Li	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Environmental Toxicology \| Environmental chemistry \| Risk assessment \|	19	16	0.842	21	19	0.905	1,331	711	0.534
228	151,138	170,486	537,835	Edward M Heithmar	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Environmental analytical chemistry \| environmental implications of nanomaterials \| single particle-ICPMS \| trace element speciation \|	18	7	0.389	22	5	0.227	1,316	212	0.161
229	151,758	171,154	540,415	Hannah K Liberatore	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences Environmental Chemistry \| Analytical Chemistry \| Non-Targeted Analysis \|	17	17	1.000	22	22	1.000	1,105	1,058	0.957
234	156,173	176,047	557,051	Elin Ulrich	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences environmental analytical chemistry \|	17	14	0.824	22	17	0.773	2,694	1,268	0.471
240	158,678	178,853	567,725	David Katz	United States	US Environmental Protection Agency	Natural Sciences / Chemical Sciences environmental chemistry \|	17	12	0.706	20	13	0.650	825	520	0.630