Class information for:
Level 2: PFOS//PFOA//PERFLUOROOCTANE SULFONATE

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
2749 3210 42.5 81%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
4 4 ENVIRONMENTAL SCIENCES//GEOSCIENCES, MULTIDISCIPLINARY//METEOROLOGY & ATMOSPHERIC SCIENCES 1766162
93 3       CHEMOSPHERE//ENVIRONMENTAL SCIENCES//BISPHENOL A 76597
2749 2             PFOS//PFOA//PERFLUOROOCTANE SULFONATE 3210
648 1                   PFOS//PFOA//PERFLUOROOCTANE SULFONATE 3210

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 PFOS authKW 4173764 15% 91% 480
2 PFOA authKW 3683258 13% 93% 417
3 PERFLUOROOCTANE SULFONATE authKW 2098427 8% 89% 249
4 PERFLUOROOCTANOIC ACID authKW 1926387 7% 85% 239
5 PERFLUORINATED COMPOUNDS authKW 1753597 7% 82% 226
6 PERFLUOROOCTANE SULFONATE PFOS authKW 961377 3% 97% 104
7 PERFLUOROOCTANOATE authKW 774039 3% 94% 87
8 PERFLUOROALKYL ACIDS authKW 734108 3% 95% 81
9 PERFLUOROALKYL SUBSTANCES authKW 706377 3% 88% 84
10 PERFLUOROOCTANOIC ACID PFOA authKW 653961 2% 90% 76

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 Environmental Sciences 47442 58% 0% 1862
2 Toxicology 24317 26% 0% 844
3 Engineering, Environmental 18855 20% 0% 630
4 Chemistry, Analytical 1117 9% 0% 301
5 Public, Environmental & Occupational Health 1103 9% 0% 284
6 Biochemical Research Methods 407 5% 0% 151
7 Water Resources 270 3% 0% 100
8 Reproductive Biology 216 2% 0% 63
9 Marine & Freshwater Biology 109 2% 0% 80
10 Pharmacology & Pharmacy 105 6% 0% 197

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 MAN TECHNOL ENVIRONM MTM 164583 1% 58% 30
2 PL ENVIRONM SCI ITM 70890 2% 15% 50
3 CORP TOXICOL 60865 0% 80% 8
4 UNIT ECOPHYSIOL BIOCHEM TOXICOL 51351 0% 60% 9
5 DEV TOXICOL BRANCH 48911 0% 86% 6
6 ENVIRONM 3M 47554 0% 100% 5
7 ENVIRONM TOXICOL HLTH 46598 0% 70% 7
8 HUMAN EXPOSURE ATMOSPHER SCI 44865 1% 20% 24
9 STATE ENVIRONM CHEM ECOTOXICOL 40025 3% 5% 84
10 ANALYT ENVIRONM TOXICOL 38921 1% 16% 26

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ENVIRONMENTAL SCIENCE & TECHNOLOGY 62964 13% 2% 433
2 CHEMOSPHERE 40268 10% 1% 306
3 ENVIRONMENT INTERNATIONAL 28634 3% 3% 108
4 ENVIRONMENTAL POLLUTION 11096 3% 1% 106
5 TOXICOLOGICAL SCIENCES 9181 2% 1% 69
6 REPRODUCTIVE TOXICOLOGY 8292 1% 2% 47
7 ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 7668 3% 1% 86
8 ENVIRONMENTAL HEALTH PERSPECTIVES 6568 2% 1% 79
9 TOXICOLOGY 5317 2% 1% 63
10 ENVIRONMENTAL RESEARCH 5279 2% 1% 52

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 PFOS 4173764 15% 91% 480 Search PFOS Search PFOS
2 PFOA 3683258 13% 93% 417 Search PFOA Search PFOA
3 PERFLUOROOCTANE SULFONATE 2098427 8% 89% 249 Search PERFLUOROOCTANE+SULFONATE Search PERFLUOROOCTANE+SULFONATE
4 PERFLUOROOCTANOIC ACID 1926387 7% 85% 239 Search PERFLUOROOCTANOIC+ACID Search PERFLUOROOCTANOIC+ACID
5 PERFLUORINATED COMPOUNDS 1753597 7% 82% 226 Search PERFLUORINATED+COMPOUNDS Search PERFLUORINATED+COMPOUNDS
6 PERFLUOROOCTANE SULFONATE PFOS 961377 3% 97% 104 Search PERFLUOROOCTANE+SULFONATE+PFOS Search PERFLUOROOCTANE+SULFONATE+PFOS
7 PERFLUOROOCTANOATE 774039 3% 94% 87 Search PERFLUOROOCTANOATE Search PERFLUOROOCTANOATE
8 PERFLUOROALKYL ACIDS 734108 3% 95% 81 Search PERFLUOROALKYL+ACIDS Search PERFLUOROALKYL+ACIDS
9 PERFLUOROALKYL SUBSTANCES 706377 3% 88% 84 Search PERFLUOROALKYL+SUBSTANCES Search PERFLUOROALKYL+SUBSTANCES
10 PERFLUOROOCTANOIC ACID PFOA 653961 2% 90% 76 Search PERFLUOROOCTANOIC+ACID+PFOA Search PERFLUOROOCTANOIC+ACID+PFOA

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref. in
cl.		 Shr. of ref. in
cl.		 Citations
1 KRAFFT, MP , RIESS, JG , (2015) PER- AND POLYFLUORINATED SUBSTANCES (PFASS): ENVIRONMENTAL CHALLENGES.CURRENT OPINION IN COLLOID & INTERFACE SCIENCE. VOL. 20. ISSUE 3. P. 192 -212 335 90% 11
2 LAU, C , ANITOLE, K , HODES, C , LAI, D , PFAHLES-HUTCHENS, A , SEED, J , (2007) PERFLUOROALKYL ACIDS: A REVIEW OF MONITORING AND TOXICOLOGICAL FINDINGS.TOXICOLOGICAL SCIENCES. VOL. 99. ISSUE 2. P. 366 -394 188 92% 935
3 POST, GB , COHN, PD , COOPER, KR , (2012) PERFLUOROOCTANOIC ACID (PFOA), AN EMERGING DRINKING WATER CONTAMINANT: A CRITICAL REVIEW OF RECENT LITERATURE.ENVIRONMENTAL RESEARCH. VOL. 116. ISSUE . P. 93 -117 206 94% 115
4 FROMME, H , TITTLEMIER, SA , VOLKEL, W , WILHELM, M , TWARDELLA, D , (2009) PERFLUORINATED COMPOUNDS - EXPOSURE ASSESSMENT FOR THE GENERAL POPULATION IN WESTERN COUNTRIES.INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH. VOL. 212. ISSUE 3. P. 239 -270 109 97% 357
5 MARTIN, JW , ASHER, BJ , BEESOON, S , BENSKIN, JP , ROSS, MS , (2010) PFOS OR PREFOS? ARE PERFLUOROOCTANE SULFONATE PRECURSORS (PREFOS) IMPORTANT DETERMINANTS OF HUMAN AND ENVIRONMENTAL PERFLUOROOCTANE SULFONATE (PFOS) EXPOSURE?.JOURNAL OF ENVIRONMENTAL MONITORING. VOL. 12. ISSUE 11. P. 1979 -2004 152 94% 80
6 RAYNE, S , FOREST, K , (2009) PERFLUOROALKYL SULFONIC AND CARBOXYLIC ACIDS: A CRITICAL REVIEW OF PHYSICOCHEMICAL PROPERTIES, LEVELS AND PATTERNS IN WATERS AND WASTEWATERS, AND TREATMENT METHODS.JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING. VOL. 44. ISSUE 12. P. 1145 -1199 159 76% 112
7 MIRAILES-MARCO, A , HARRAD, S , (2015) PERFLUOROOCTANE SULFONATE: A REVIEW OF HUMAN EXPOSURE, BIOMONITORING AND THE ENVIRONMENTAL FORENSICS UTILITY OF ITS CHIRALITY AND ISOMER DISTRIBUTION.ENVIRONMENT INTERNATIONAL. VOL. 77. ISSUE . P. 148 -159 118 93% 11
8 LIU, JX , AVENDANO, SM , (2013) MICROBIAL DEGRADATION OF POLYFLUOROALKYL CHEMICALS IN THE ENVIRONMENT: A REVIEW.ENVIRONMENT INTERNATIONAL. VOL. 61. ISSUE . P. 98-114 117 92% 45
9 WANG, TY , WANG, P , MENG, J , LIU, SJ , LU, YL , KHIM, JS , GIESY, JP , (2015) A REVIEW OF SOURCES, MULTIMEDIA DISTRIBUTION AND HEALTH RISKS OF PERFLUOROALKYL ACIDS (PFAAS) IN CHINA.CHEMOSPHERE. VOL. 129. ISSUE . P. 87 -99 105 97% 14
10 MERINO, N , QU, Y , DEEB, RA , HAWLEY, EL , HOFFMANN, MR , MAHENDRA, S , (2016) DEGRADATION AND REMOVAL METHODS FOR PERFLUOROALKYL AND POLYFLUOROALKYL SUBSTANCES IN WATER.ENVIRONMENTAL ENGINEERING SCIENCE. VOL. 33. ISSUE 9. P. 615 -649 152 75% 1

Classes with closest relation at Level 2


Rank Class id link
1 2393 FLUOROPOLYMERS//JOURNAL OF FLUORINE CHEMISTRY//FLUOROUS
2 118 CHEMOSPHERE//POLYBROMINATED DIPHENYL ETHERS//PCBS
3 1356 PEROXISOME//ADRENOLEUKODYSTROPHY//ZELLWEGER SYNDROME
4 4051 DECAMETHYLCYCLOPENTASILOXANE//VOLATILE METHYLSILOXANES//SILOXANE
5 1302 PHARMACEUTICALS//TRICLOSAN//PARABENS
6 614 BISPHENOL A//PHTHALATES//NONYLPHENOL
7 580 TCDD//ARYL HYDROCARBON RECEPTOR//DIOXIN
8 3984 CERAMIC CONCRETE//HCBS//REFRACTORIES AND INDUSTRIAL CERAMICS
9 3933 ORGANOPHOSPHATE ESTERS//ORGANOPHOSPHATE FLAME RETARDANTS//ORGANOPHOSPHORUS FLAME RETARDANTS
10 2243 ELECTROCOAGULATION//ELECTRO FENTON//ELECTROCHEMICAL OXIDATION

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