Class information for:
Level 1: PRECONCENTRATION//FLAME ATOMIC ABSORPTION SPECTROMETRY//SOLID PHASE EXTRACTION

Basic class information
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
18 4 CHEMISTRY, ANALYTICAL//TOXICOLOGY//ENVIRONMENTAL SCIENCES 697102
347 3       CHEMISTRY, ANALYTICAL//PRECONCENTRATION//PVC MEMBRANE 36737
308 2             PRECONCENTRATION//FLAME ATOMIC ABSORPTION SPECTROMETRY//CHEMISTRY, ANALYTICAL 18780
948 1                   PRECONCENTRATION//FLAME ATOMIC ABSORPTION SPECTROMETRY//SOLID PHASE EXTRACTION 2974

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PRECONCENTRATION authKW 2020348 23% 28% 687
2 FLAME ATOMIC ABSORPTION SPECTROMETRY authKW 1634104 13% 39% 391
3 SOLID PHASE EXTRACTION authKW 637176 21% 10% 610
4 CLOUD POINT EXTRACTION authKW 636220 7% 31% 195
5 FAAS authKW 586288 5% 35% 158
6 ATOMIC ABSORPTION SPECTROMETRY authKW 248520 7% 12% 199
7 AMBERLITE XAD 2 authKW 217936 1% 57% 36
8 ON LINE PRECONCENTRATION authKW 193418 2% 26% 71
9 AMBERLITE XAD 4 authKW 163276 1% 45% 34
10 TS FF AAS authKW 148338 0% 100% 14

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Chemistry, Analytical 41498 50% 0% 1501
2 Spectroscopy 4153 11% 0% 318
3 Environmental Sciences 2322 15% 0% 449
4 Chemistry, Multidisciplinary 2002 19% 0% 567
5 Engineering, Environmental 1494 6% 0% 185
6 Food Science & Technology 1305 9% 0% 258
7 Engineering, Civil 854 5% 0% 159
8 Engineering, Chemical 550 7% 0% 211
9 Chemistry, Applied 265 4% 0% 107
10 Water Resources 222 3% 0% 89

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 LQA 137904 1% 48% 27
2 GUMUSHANE VOCAT 70101 1% 44% 15
3 MED MKT PROMOT PROGRAMME 67809 0% 80% 8
4 QUIM EXATAS 63660 1% 26% 23
5 VARAMIN PISHVA BRANCH 62847 1% 13% 44
6 GRP PESQUISA QUIM ANALIT 57748 0% 42% 13
7 ART SCI 46690 4% 4% 123
8 GRP PESQUISA QUIM ANAL 37839 0% 71% 5
9 NUCLEO QUIM ANALIT BAHIA NQA 37839 0% 71% 5
10 OEHRC 34671 0% 55% 6

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 MICROCHIMICA ACTA 77873 5% 5% 157
2 TALANTA 42823 9% 2% 265
3 ATOMIC SPECTROSCOPY 42765 2% 6% 64
4 INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY 28697 3% 3% 95
5 JOURNAL OF HAZARDOUS MATERIALS 15027 5% 1% 152
6 MICROCHEMICAL JOURNAL 14760 3% 2% 80
7 ANALYTICAL LETTERS 13376 3% 1% 93
8 JOURNAL OF AOAC INTERNATIONAL 9524 2% 1% 68
9 CANADIAN JOURNAL OF ANALYTICAL SCIENCES AND SPECTROSCOPY 8463 1% 4% 18
10 ANALYTICAL SCIENCES 8388 3% 1% 77

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 PRECONCENTRATION 2020348 23% 28% 687 Search PRECONCENTRATION Search PRECONCENTRATION
2 FLAME ATOMIC ABSORPTION SPECTROMETRY 1634104 13% 39% 391 Search FLAME+ATOMIC+ABSORPTION+SPECTROMETRY Search FLAME+ATOMIC+ABSORPTION+SPECTROMETRY
3 SOLID PHASE EXTRACTION 637176 21% 10% 610 Search SOLID+PHASE+EXTRACTION Search SOLID+PHASE+EXTRACTION
4 CLOUD POINT EXTRACTION 636220 7% 31% 195 Search CLOUD+POINT+EXTRACTION Search CLOUD+POINT+EXTRACTION
5 FAAS 586288 5% 35% 158 Search FAAS Search FAAS
6 ATOMIC ABSORPTION SPECTROMETRY 248520 7% 12% 199 Search ATOMIC+ABSORPTION+SPECTROMETRY Search ATOMIC+ABSORPTION+SPECTROMETRY
7 AMBERLITE XAD 2 217936 1% 57% 36 Search AMBERLITE+XAD+2 Search AMBERLITE+XAD+2
8 ON LINE PRECONCENTRATION 193418 2% 26% 71 Search ON+LINE+PRECONCENTRATION Search ON+LINE+PRECONCENTRATION
9 AMBERLITE XAD 4 163276 1% 45% 34 Search AMBERLITE+XAD+4 Search AMBERLITE+XAD+4
10 TS FF AAS 148338 0% 100% 14 Search TS+FF+AAS Search TS+FF+AAS

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.

Classes with closest relation at Level 1


rank cluster_id2 link
1 10569 KNOTTED REACTOR//PRECONCENTRATION//IMMOBILIZED 8 HYDROXYQUINOLINE
2 38223 MICROWAVE ENFORCED SOLID PHASE EXTRACTION//MULTI STAGE MICRO COLUMN//OMIMTF2N
3 17068 ION IMPRINTED POLYMER//ION IMPRINTING//SURFACE IMPRINTING TECHNIQUE
4 38493 AMINATED GUAR GUM//AMOXICILLIN REMOVAL//ANALYTIKA
5 21644 STANDARD ALLOYS//ALLOYS AND BIOLOGICAL SAMPLES//5 BR PADAP TPB NAPHTHALENE
6 29573 PINUS NIGRA L//PRECONCENTRATION ON ACTIVATED CARBON//BIOMONITOR PLANTS
7 7071 CHROMIUM SPECIATION//CHROMIUMVI//CHROMIUM DETERMINATION
8 37530 PURIFICATION OF ALKALI METAL SALTS//CHELATING SORBENT//LICHROPREP RP 8
9 2037 DISPERSIVE LIQUID LIQUID MICROEXTRACTION//LIQUID PHASE MICROEXTRACTION//SINGLE DROP MICROEXTRACTION
10 16883 SEMIMETHYLTHYMOL BLUE//URANIUM//ARSENAZO III

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