Subfield · Environmental Chemistry
Top Countries in Environmental Chemistry Research
China ranks first in 2022–2025, out of 35 ranked countries.
Composite score: field-normalised excellence, output and total citations weighted 50 / 30 / 20, each as a percentile so no single heavy-tailed measure dominates. Floor: 100 fractional works in this field.
Ranked by research quality, 2022–2025
| # | Country | Score | Top-10% rate | Works | Citations | All time |
|---|---|---|---|---|---|---|
| 1 | China | 100.0 | 23.0% | 12k | 138k | #2 |
| 2 | United States | 80.5 | 11.0% | 10k | 58k | #1 |
| 3 | India | 69.1 | 15.8% | 2.1k | 14k | #9 |
| 4 | Germany | 61.0 | 20.4% | 1.4k | 12k | #4 |
| 5 | United Kingdom | 54.7 | 19.8% | 1k | 9.4k | #3 |
| 6 | Australia | 49.6 | 24.0% | 783 | 9.7k | #6 |
| 7 | France | 45.3 | 14.3% | 1.2k | 7.9k | #7 |
| 8 | Italy | 41.5 | 19.8% | 809 | 7.4k | #11 |
| 9 | Canada | 38.2 | 16.4% | 1.1k | 9.6k | #5 |
| 10 | Spain | 35.2 | 14.5% | 938 | 7.1k | #13 |
| 11 | Netherlands | 32.6 | 25.1% | 370 | 4.5k | #8 |
| 12 | Brazil | 30.1 | 8.2% | 1.2k | 5.6k | #17 |
| 13 | Sweden | 27.9 | 26.1% | 340 | 4.4k | #12 |
| 14 | Saudi Arabia | 25.8 | 27.3% | 228 | 3.2k | #33 |
| 15 | Japan | 23.8 | 9.1% | 1.1k | 5.3k | #10 |
| 16 | Iran | 22.0 | 18.3% | 415 | 3.8k | #27 |
| 17 | Russia | 20.3 | 4.4% | 1.7k | 5.1k | #20 |
| 18 | South Korea | 18.7 | 13.8% | 714 | 5.4k | #18 |
| 19 | Poland | 17.2 | 13.1% | 483 | 4.1k | #22 |
| 20 | Norway | 15.7 | 19.8% | 339 | 3k | #16 |
| 21 | ?? | 14.4 | 18.6% | 365 | 3.3k | #24 |
| 22 | Denmark | 13.1 | 20.9% | 291 | 3k | #15 |
| 23 | Switzerland | 11.8 | 20.0% | 280 | 2.7k | #14 |
| 24 | Pakistan | 10.6 | 19.4% | 216 | 1.9k | #34 |
| 25 | Türkiye | 9.5 | 11.8% | 364 | 2.1k | #29 |
| 26 | Portugal | 8.4 | 18.7% | 280 | 2.5k | #28 |
| 27 | South Africa | 7.3 | 17.6% | 272 | 2k | #26 |
| 28 | Egypt | 6.3 | 16.7% | 238 | 2.1k | #40 |
| 29 | Belgium | 5.3 | 16.8% | 260 | 2k | #19 |
| 30 | Malaysia | 4.3 | 13.6% | 240 | 1.9k | #35 |
| 31 | Indonesia | 3.4 | 6.9% | 419 | 880 | #46 |
| 32 | Mexico | 2.5 | 7.5% | 464 | 2.1k | #37 |
| 33 | Czechia | 1.7 | 13.3% | 221 | 1.7k | #38 |
| 34 | Nigeria | 81.5 | 9.9% | 204 | 903 | #48 |
| 35 | Argentina | 0.0 | 7.7% | 227 | 979 | #42 |
countries ranked worldwide in Environmental Chemistry (35). rank on the composite score within the stated pool. The score track runs 0 to 100; the rate track carries no world mark, because the world rate differs by field.
How spread out this pool is
Every row above on one axis — one tick each, right is a higher score. A field where the top few are far clear of everyone and one that runs down evenly look identical as a table.
One bar per band of score, counting the rows on this page.