Class information for:
Level 2: NITRITE//NITRITE DETERMINATION//ANALYTICA CHIMICA ACTA

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
1679 2             NITRITE//NITRITE DETERMINATION//ANALYTICA CHIMICA ACTA 7100
1657 1                   SEQUENTIAL INJECTION ANALYSIS//SEQUENTIAL INJECTION CHROMATOGRAPHY//FLOW ANALYSIS 2574
5624 1                   NITRITE//NITRITE DETERMINATION//NITRITE ION 1629
11411 1                   PHOSPHATE DETERMINATION//PHOSPHOMOLYBDENUM BLUE//SILICATE INTERFERENCE 1010
18945 1                   AMMONIA DETERMINATION//MEMBRANELESS GAS DIFFUSION//AMMONIUM DETERMINATION 552
19305 1                   LIQUID CORE WAVEGUIDE//PAIRED EMITTER DETECTOR DIODE//LIQUID CORE OPTICAL FIBER 535
20426 1                   CHEMICAL OXYGEN DEMAND//CHEMICAL OXYGEN DEMAND COD//COD DETERMINATION 484
25055 1                   KJELDAHL METHOD//KJELDAHL//DUMAS METHOD 316

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 NITRITE authKW 412292 8% 16% 594
2 NITRITE DETERMINATION authKW 206477 1% 85% 55
3 ANALYTICA CHIMICA ACTA journal 195802 15% 4% 1040
4 CHEMISTRY, ANALYTICAL WoSSC 189448 69% 1% 4909
5 FLOW ANALYSIS authKW 188972 2% 28% 153
6 SEQUENTIAL INJECTION ANALYSIS authKW 185753 2% 33% 128
7 FLOW INJECTION authKW 164723 4% 13% 291
8 SEQUENTIAL INJECTION authKW 142801 1% 37% 87
9 FLOW INJECTION ANALYSIS authKW 139735 4% 12% 261
10 FLOW SYSTEM authKW 135725 2% 25% 121

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Chemistry, Analytical 189448 69% 1% 4909
2 Electrochemistry 3593 7% 0% 473
3 Instruments & Instrumentation 2125 6% 0% 444
4 Spectroscopy 1218 4% 0% 299
5 Biochemical Research Methods 1113 5% 0% 362
6 Food Science & Technology 673 5% 0% 334
7 Chemistry, Multidisciplinary 593 9% 0% 641
8 Water Resources 395 3% 0% 190
9 Environmental Sciences 345 5% 0% 382
10 Engineering, Environmental 282 2% 0% 156

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ENERGIA NUCL AGR 64943 2% 12% 124
2 CEQUP 21774 1% 12% 40
3 OCEAN CHEM 20910 0% 20% 24
4 SERV QUIM FIS 20138 0% 23% 20
5 MARINE CIIMAR 16718 0% 54% 7
6 JIANGSU ENVIRONM MAT ENGN 15969 0% 60% 6
7 AUTOMACAO QUIM ANALIT 13311 0% 100% 3
8 ESCOLA SUPER BIOTECNOL 13292 1% 6% 54
9 NANOSCI SENSOR TECHNOL GRP 13036 0% 29% 10
10 ANALYT CHEM 12620 5% 1% 320

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ANALYTICA CHIMICA ACTA 195802 15% 4% 1040
2 TALANTA 98481 9% 4% 621
3 ANALYST 43514 5% 3% 384
4 BUNSEKI KAGAKU 42105 3% 4% 237
5 JOURNAL OF AUTOMATIC CHEMISTRY 31704 1% 14% 53
6 LABORATORY ROBOTICS AND AUTOMATION 24485 0% 16% 34
7 ANALYTICAL SCIENCES 16299 2% 2% 166
8 JOURNAL OF AUTOMATED METHODS & MANAGEMENT IN CHEMISTRY 16149 0% 16% 23
9 ANALYTICAL LETTERS 13146 2% 2% 143
10 ANALYTICAL CHEMISTRY 11471 4% 1% 314

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 NITRITE 412292 8% 16% 594 Search NITRITE Search NITRITE
2 NITRITE DETERMINATION 206477 1% 85% 55 Search NITRITE+DETERMINATION Search NITRITE+DETERMINATION
3 FLOW ANALYSIS 188972 2% 28% 153 Search FLOW+ANALYSIS Search FLOW+ANALYSIS
4 SEQUENTIAL INJECTION ANALYSIS 185753 2% 33% 128 Search SEQUENTIAL+INJECTION+ANALYSIS Search SEQUENTIAL+INJECTION+ANALYSIS
5 FLOW INJECTION 164723 4% 13% 291 Search FLOW+INJECTION Search FLOW+INJECTION
6 SEQUENTIAL INJECTION 142801 1% 37% 87 Search SEQUENTIAL+INJECTION Search SEQUENTIAL+INJECTION
7 FLOW INJECTION ANALYSIS 139735 4% 12% 261 Search FLOW+INJECTION+ANALYSIS Search FLOW+INJECTION+ANALYSIS
8 FLOW SYSTEM 135725 2% 25% 121 Search FLOW+SYSTEM Search FLOW+SYSTEM
9 LIQUID CORE WAVEGUIDE 134075 1% 67% 45 Search LIQUID+CORE+WAVEGUIDE Search LIQUID+CORE+WAVEGUIDE
10 SEQUENTIAL INJECTION CHROMATOGRAPHY 112356 0% 77% 33 Search SEQUENTIAL+INJECTION+CHROMATOGRAPHY Search SEQUENTIAL+INJECTION+CHROMATOGRAPHY

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 2480 ION CHROMATOGRAPHY//INORGANIC ANIONS//ION EXCLUSION CHROMATOGRAPHY
2 3079 SULFITE//ENVIRONM MED TOXICOL//SODIUM METABISULFITE
3 308 PRECONCENTRATION//FLAME ATOMIC ABSORPTION SPECTROMETRY//CHEMISTRY, ANALYTICAL
4 3931 LOCH LOMOND//VOM WASSER//INTEGRATED SAFEGUARDS
5 1306 PVC MEMBRANE//ION SELECTIVE ELECTRODE//POTENTIOMETRY
6 3955 PRIMARY AROMATIC AMINES//ALIPHATIC AMINES//SHORT CHAIN ALIPHATIC AMINES
7 4280 KARL FISCHER TITRATION//WATER DETERMINATION//KARL FISCHER
8 2135 ELECTROCHEMILUMINESCENCE//ELECTROGENERATED CHEMILUMINESCENCE//CHEMILUMINESCENCE
9 103 BIOSENSOR//GLUCOSE OXIDASE//DIRECT ELECTROCHEMISTRY
10 2252 PRESSURE SENSITIVE PAINT//OPTICAL OXYGEN SENSOR//OXYGEN SENSOR

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