Class information for:
Level 2: PRECONCENTRATION//FLAME ATOMIC ABSORPTION SPECTROMETRY//CHEMISTRY, ANALYTICAL

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
7071 1                   CHROMIUM SPECIATION//CHROMIUMVI//CHROMIUM DETERMINATION 1436
7402 1                   CHELATION ION CHROMATOGRAPHY//SAGAMIHARA RD//MECHANISM OF ZONE SPREADING 1397
9131 1                   2 2 QUINOLYLAZO 5 DIMETHYLAMINOANILINE//EXTRACTIVE SPECTROPHOTOMETRY//SPECTROPHOTOMETRY 1215
10569 1                   KNOTTED REACTOR//PRECONCENTRATION//IMMOBILIZED 8 HYDROXYQUINOLINE 1082
10867 1                   CATALYTIC SPECTROPHOTOMETRY//KINETIC CATALYTIC METHOD//CATALYTIC KINETIC SPECTROPHOTOMETRY 1057
14423 1                   OSMIUMIV//OSMIUM DETERMINATION//NOBLE METALS ANALYSIS 801
14914 1                   VANADIUM DETERMINATION//VANADIUM SPECIATION//VANADIUM 768
15776 1                   MOLYBDENUM DETERMINATION//COMPLEX ADSORPTION WAVE//MOLYBDENUMVI 719
16883 1                   SEMIMETHYLTHYMOL BLUE//URANIUM//ARSENAZO III 656
17005 1                   ALUMINUM SPECIATION//SOLOCHROME VIOLET RS//AC OSCILLOPOLAROGRAPHY 649
18294 1                   DERIVATIVE SPECTROPHOTOMETRY//2 2 PYRIDYLMETHYLENEAMINOPHENOL//ADDITIVES DETERMINATION 583
18995 1                   SOLID PHASE SPECTROPHOTOMETRY//FLOW THROUGH OPTOSENSOR//COLORIMETRIC SOLID PHASE EXTRACTION 549
21449 1                   DPKSH//DI 2 PYRIDYL KETONE BENZOYLHYDRAZONE//DI 2 PYRIDYL KETONE THIOPHENE 2 CARBOXYLIC HYDRAZONE 442
21644 1                   STANDARD ALLOYS//ALLOYS AND BIOLOGICAL SAMPLES//5 BR PADAP TPB NAPHTHALENE 434
22440 1                   POLYURETHANE FOAM//URETHANE POLYMERS//1 5 DI 2 FLUOROPHENYL 3 MERCAPTOFORMAZAN 404
23318 1                   TIN DETERMINATION//DISSOLVED TIN//SPECIATION OF INORGANIC TIN 372
24657 1                   JOURNAL OF ANALYTICAL CHEMISTRY//SILICA TITANIA XEROGELS//SOLID PHASE SPECTROPHOTOMETRIC DETERMINATION 328
24821 1                   MIX POLYNUCLEAR COMPLEX//ADSORPTION VOLTAMMETRY//ALIZARIN COMPLEXON 323
25638 1                   BISMUTH DETERMINATION//4 BROMO PTPT//TETRAIODOBISMUTHATEIII 298
26385 1                   MN II CATALYSED//METHOXY 1 4 BENZOQUINONE//PERIODATE 277
27513 1                   PORTLAND CEMENT ANALYSIS//COMPLEXATION EQUILIBRIA//PYRIDINOL DERIVATIVES 247
28197 1                   N 1 NAPHTHYLETHYLENE DIAMINE DIHYDROCHLORIDE//NONSALINE WATER//P NITROPHENOL ADDUCTS 231
28322 1                   LANGMUIR AGGREGATION//SPECTRAL CORRECTION TECHNIQUE//BETA CORRECTION PRINCIPLE 228
28731 1                   2 2 THIAZOLYLAZO P CRESOL//2 2 SULFO 4 ACETYLPHENYLAZO 7 2 4 6 TRICHLOROPHENYLAZO 1 8 DIHYDROXYNAPHTHALENE 3 6 DISULFONIC ACID//2 2 SULFOPHENYLAZO 7 2 6 DIBROMO 4 METHYPHENYLAZO 1 8 DIHYDROXYNAPHTHALENE 3 6 DISULFONIC ACID 219
29507 1                   3 HYDROXY 1 2 DIHYDRO QUINAZOLIN 4 ONES//NONANALYTE SPIKING//PROMPT GAMMA SPECTROMETRY 202
30396 1                   FLUORESCENCE MICROSCOPIC ANALYSIS//SELF ORDERED RING SOR TECHNIQUE//FLUORESCENT MICROSCOPIC ANALYSIS 184
31022 1                   H POINT STANDARD ADDITION METHOD//HPSAM//BLANK BIAS ERROR 174
31735 1                   FUSION WITH AMMONIUM HYDROGEN SULFATE//HEXAFLUOROTANTALATEV//TANTALITE COLUMBITE ORE ANALYSIS 162
32865 1                   5 CHLORO 2 HYDROXYTHIOBENZHYDRAZIDE//AGES CHARACTERISTIC//ANALYSIS OF RARE EARTH METALS 146
35435 1                   BETA TYPE CHELATES//COLOR FADING SPECTROPHOTOMETRY//2 6 DIBROMO 4 CHLORO CARBOXYARSENAZO 112
35474 1                   BETA DIKETO LIQUID CHELATING AGENT//COAL FLY ASH SAMPLES//CR DETERMIANTION 111

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PRECONCENTRATION authKW 656183 5% 40% 985
2 FLAME ATOMIC ABSORPTION SPECTROMETRY authKW 407284 3% 50% 491
3 CHEMISTRY, ANALYTICAL WoSSC 354222 58% 2% 10968
4 SPECTROPHOTOMETRY authKW 213697 5% 15% 848
5 TALANTA journal 190180 7% 8% 1405
6 CLOUD POINT EXTRACTION authKW 182858 1% 42% 263
7 SOLID PHASE EXTRACTION authKW 178397 4% 13% 814
8 CHROMIUM SPECIATION authKW 152873 1% 72% 126
9 FAAS authKW 132545 1% 42% 189
10 JOURNAL OF ANALYTICAL CHEMISTRY journal 101180 3% 11% 530

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Chemistry, Analytical 354222 58% 2% 10968
2 Chemistry, Multidisciplinary 14369 20% 0% 3773
3 Spectroscopy 7663 6% 1% 1147
4 Environmental Sciences 1777 7% 0% 1250
5 Chemistry, Inorganic & Nuclear 940 4% 0% 674
6 Biochemical Research Methods 702 3% 0% 568
7 Engineering, Environmental 688 2% 0% 401
8 Electrochemistry 570 2% 0% 406
9 Nuclear Science & Technology 413 2% 0% 404
10 Food Science & Technology 388 3% 0% 538

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 CHEM 33032 29% 0% 5380
2 LQA 26912 0% 54% 30
3 EXCELLENCE ANALYT CHEM 20144 0% 13% 93
4 ANALYT CHEM 18660 3% 2% 638
5 MED MKT PROMOT PROGRAMME 13576 0% 90% 9
6 QUIM EXATAS 12840 0% 30% 26
7 VARAMIN PISHVA BRANCH 11278 0% 14% 47
8 GUMUSHANE VOCAT 11076 0% 44% 15
9 GRP PESQUISA QUIM ANALIT 10583 0% 45% 14
10 ART SCI 10324 1% 4% 147

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 TALANTA 190180 7% 8% 1405
2 JOURNAL OF ANALYTICAL CHEMISTRY 101180 3% 11% 530
3 ANALYTICA CHIMICA ACTA 90922 6% 5% 1161
4 BUNSEKI KAGAKU 78843 3% 9% 528
5 MICROCHEMICAL JOURNAL 78215 2% 10% 463
6 ANALYST 65951 4% 5% 771
7 MIKROCHIMICA ACTA 63788 2% 11% 335
8 ANALYTICAL LETTERS 57918 3% 7% 487
9 CHEMIA ANALITYCZNA 54340 2% 11% 290
10 ANALYTICAL SCIENCES 47152 2% 6% 459

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 PRECONCENTRATION 656183 5% 40% 985 Search PRECONCENTRATION Search PRECONCENTRATION
2 FLAME ATOMIC ABSORPTION SPECTROMETRY 407284 3% 50% 491 Search FLAME+ATOMIC+ABSORPTION+SPECTROMETRY Search FLAME+ATOMIC+ABSORPTION+SPECTROMETRY
3 SPECTROPHOTOMETRY 213697 5% 15% 848 Search SPECTROPHOTOMETRY Search SPECTROPHOTOMETRY
4 CLOUD POINT EXTRACTION 182858 1% 42% 263 Search CLOUD+POINT+EXTRACTION Search CLOUD+POINT+EXTRACTION
5 SOLID PHASE EXTRACTION 178397 4% 13% 814 Search SOLID+PHASE+EXTRACTION Search SOLID+PHASE+EXTRACTION
6 CHROMIUM SPECIATION 152873 1% 72% 126 Search CHROMIUM+SPECIATION Search CHROMIUM+SPECIATION
7 FAAS 132545 1% 42% 189 Search FAAS Search FAAS
8 ON LINE PRECONCENTRATION 93247 1% 45% 124 Search ON+LINE+PRECONCENTRATION Search ON+LINE+PRECONCENTRATION
9 ATOMIC ABSORPTION SPECTROMETRY 82559 2% 17% 289 Search ATOMIC+ABSORPTION+SPECTROMETRY Search ATOMIC+ABSORPTION+SPECTROMETRY
10 DERIVATIVE SPECTROPHOTOMETRY 73372 1% 31% 141 Search DERIVATIVE+SPECTROPHOTOMETRY Search DERIVATIVE+SPECTROPHOTOMETRY

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 2


rank cluster_id2 link
1 1679 NITRITE//NITRITE DETERMINATION//ANALYTICA CHIMICA ACTA
2 3520 IMMOBILIZED POLYSILOXANE LIGAND SYSTEMS//RECURSOS MINERAIS//CHROMATOFOCUSING
3 133 JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY//SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY//SPECTROSCOPY
4 1425 ANODIC STRIPPING VOLTAMMETRY//STRIPPING VOLTAMMETRY//BISMUTH FILM ELECTRODE
5 3931 LOCH LOMOND//VOM WASSER//INTEGRATED SAFEGUARDS
6 2859 RESONANCE LIGHT SCATTERING//RESONANCE RAYLEIGH SCATTERING//SPECTROSCOPY AND SPECTRAL ANALYSIS
7 3758 THALLIUM//THALLIUM POISONING//THALLIUM DETERMINATION
8 2480 ION CHROMATOGRAPHY//INORGANIC ANIONS//ION EXCLUSION CHROMATOGRAPHY
9 303 BIOSORPTION//ADSORPTION//ISOTHERM
10 3675 CHRONIC BERYLLIUM DISEASE//BERYLLIUM//BERYLLIOSIS

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