PFAS

Quality:

Per- and polyfluoroalkyl substances - class of compounds. Article “PFAS” in English Wikipedia has 95.8 points for quality (as of July 1, 2025). The article contains 324 references and 40 sections.

In this language version of Wikipedia the article has the best quality. Also, this article is the most popular in that (English) language version.

Achievements in the last month:

English Wikipedia:

en

The 5955^th most editable in English Wikipedia in the last month.

Global Wikipedia:

The 6481^st most popular in AI in the last month.

In June 2025 the article “PFAS” was edited by 12 authors in English Wikipedia (5955^th place) and written by 26 authors in all languages (6481^st place).

Since the creation of article “PFAS”, its content was written by 254 registered users of English Wikipedia and edited by 740 registered Wikipedia users in all languages.

The article is cited 378 times in English Wikipedia and cited 1052 times in all languages.

The highest Authors Interest rank from 2001:

• Local (English): #1140 in August 2022
• Global: #1281 in August 2022

The highest popularity rank from 2008:

• Local (English): #11253 in May 2025
• Global: #8925 in May 2025

There are 23 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

#	Language	Quality grade	Quality score
1	English (en) PFAS		95.7774
2	German (de) Per- und polyfluorierte Alkylverbindungen		90
3	French (fr) PFAS		86.0819
4	Dutch (nl) Poly- en perfluoralkylstoffen		76.4214
5	Chinese (zh) 全氟和多氟烷基物質		61.5916
6	Esperanto (eo) Perfluoralkilaj kaj polifluoralkilaj substancoj		52.8349
7	Finnish (fi) Perfluoratut alkyyliyhdisteet		52.0171
8	Japanese (ja) ペルフルオロアルキル化合物及びポリフルオロアルキル化合物		46.0429
9	Hebrew (he) PFAS		42.4577
10	Italian (it) PFAS		40.8921

The following table shows the most popular language versions of the article.

#	Language	Popularity award	Relative popularity
1	English (en) PFAS		1 810 128
2	German (de) Per- und polyfluorierte Alkylverbindungen		1 138 758
3	French (fr) PFAS		361 567
4	Dutch (nl) Poly- en perfluoralkylstoffen		221 673
5	Italian (it) PFAS		190 214
6	Japanese (ja) ペルフルオロアルキル化合物及びポリフルオロアルキル化合物		172 970
7	Spanish (es) Sustancias perfluoroalquiladas		50 586
8	Swedish (sv) Per- och polyfluorerade alkylsubstanser		45 586
9	Russian (ru) ПФАС		45 444
10	Polish (pl) Związki perfluoroalkilowe		38 697

The following table shows the language versions of the article with the highest popularity in the last month.

#	Language	Popularity award	Relative popularity
1	English (en) PFAS		30 810
2	French (fr) PFAS		13 003
3	German (de) Per- und polyfluorierte Alkylverbindungen		12 988
4	Italian (it) PFAS		4 837
5	Japanese (ja) ペルフルオロアルキル化合物及びポリフルオロアルキル化合物		4 450
6	Russian (ru) ПФАС		2 126
7	Dutch (nl) Poly- en perfluoralkylstoffen		2 011
8	Spanish (es) Sustancias perfluoroalquiladas		1 820
9	Chinese (zh) 全氟和多氟烷基物質		1 738
10	Polish (pl) Związki perfluoroalkilowe		1 666

The following table shows the language versions of the article with the highest Authors’ Interest.

#	Language	AI award	Relative AI
1	English (en) PFAS		254
2	German (de) Per- und polyfluorierte Alkylverbindungen		198
3	French (fr) PFAS		97
4	Dutch (nl) Poly- en perfluoralkylstoffen		46
5	Japanese (ja) ペルフルオロアルキル化合物及びポリフルオロアルキル化合物		24
6	Italian (it) PFAS		19
7	Danish (da) Per- og polyfluoralkylforbindelser		13
8	Spanish (es) Sustancias perfluoroalquiladas		13
9	Finnish (fi) Perfluoratut alkyyliyhdisteet		12
10	Polish (pl) Związki perfluoroalkilowe		12

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

#	Language	AI award	Relative AI
1	English (en) PFAS		12
2	French (fr) PFAS		6
3	Dutch (nl) Poly- en perfluoralkylstoffen		3
4	Hebrew (he) PFAS		2
5	German (de) Per- und polyfluorierte Alkylverbindungen		1
6	Italian (it) PFAS		1
7	Japanese (ja) ペルフルオロアルキル化合物及びポリフルオロアルキル化合物		1
8	Catalan (ca) Substàncies per- i polifluoroalquils		0
9	Czech (cs) PFAS		0
10	Danish (da) Per- og polyfluoralkylforbindelser		0

The following table shows the language versions of the article with the highest number of citations.

On 21 February 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Jeffrey Epstein, Alysa Liu, Eric Dane, 2026 Winter Olympics, Rebecca Gayheart, Johannes Høsflot Klæbo, Wuthering Heights, amyotrophic lateral sclerosis, Andrew Mountbatten-Windsor, John F. Kennedy Jr..

In English Wikipedia the most popular articles on that day were: Eric Dane, Alysa Liu, Rebecca Gayheart, Jeffrey Epstein, 2026 Winter Olympics, Eileen Gu, John F. Kennedy Jr., Carolyn Bessette Kennedy, Deaths in 2026, Johannes Høsflot Klæbo.

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information