Class information for:
Level 1: MEMBRANE INTRODUCTION MASS SPECTROMETRY//MEMBRANE EXTRACTION//PL ENVIRONM S

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
87 3       CHEMISTRY, ANALYTICAL//JOURNAL OF CHROMATOGRAPHY A//JOURNAL OF CHROMATOGRAPHY 81655
2790 2             JOURNAL OF HIGH RESOLUTION CHROMATOGRAPHY & CHROMATOGRAPHY COMMUNICATIONS//RESIDUAL SOLVENTS//HRC-JOURNAL OF HIGH RESOLUTION CHROMATOGRAPHY 3326
15298 1                   MEMBRANE INTRODUCTION MASS SPECTROMETRY//MEMBRANE EXTRACTION//PL ENVIRONM S 746

Terms with highest relevance score



rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 MEMBRANE INTRODUCTION MASS SPECTROMETRY authKW 716555 3% 81% 21
2 MEMBRANE EXTRACTION authKW 390656 5% 23% 40
3 PL ENVIRONM S address 340781 1% 73% 11
4 SUPPORTED LIQUID MEMBRANE EXTRACTION authKW 339466 2% 54% 15
5 MEMBRANE INLET MASS SPECTROMETRY authKW 281616 3% 33% 20
6 MEMBRANE INTRODUCTION authKW 258757 1% 88% 7
7 PHYS BIOCHEM GRP address 196595 1% 42% 11
8 MEMBRANE INTRODUCTION MASS SPECTROMETRY MIMS authKW 176025 1% 83% 5
9 MEMBRANE INLET authKW 150200 1% 44% 8
10 MICROTRAP authKW 147855 1% 50% 7

Web of Science journal categories



chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Chemistry, Analytical 16375 63% 0% 469
2 Biochemical Research Methods 2204 19% 0% 139
3 Spectroscopy 1721 14% 0% 101
4 Instruments & Instrumentation 414 8% 0% 61
5 Engineering, Environmental 98 3% 0% 26
6 Environmental Sciences 95 7% 0% 55
7 Engineering, Chemical 33 4% 0% 32
8 Biotechnology & Applied Microbiology 31 4% 0% 32
9 Engineering, General 23 2% 0% 14
10 Physics, Atomic, Molecular & Chemical 8 3% 0% 20

Address terms



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PL ENVIRONM S 340781 1% 73% 11
2 PHYS BIOCHEM GRP 196595 1% 42% 11
3 ANAL GEOCHEM GRP 42246 0% 100% 1
4 ANALYT ENVIRONM TRACE ANAL UNIT 42246 0% 100% 1
5 ANALYT SCI RUMENTAL METHODS GRP 42246 0% 100% 1
6 BIOCHEM PHYS BIOCHEM GRP 42246 0% 100% 1
7 BIOSI MICROBIOL 1 42246 0% 100% 1
8 CHAIR ANALYT ECOL CHEM 42246 0% 100% 1
9 CHROMATOG RA RUMENTAT ANALYT 42246 0% 100% 1
10 ECOL OURCE MANGEMENT 42246 0% 100% 1

Journals



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FIELD ANALYTICAL CHEMISTRY AND TECHNOLOGY 20977 1% 6% 9
2 ANALYTICAL CHEMISTRY 9067 12% 0% 89
3 RAPID COMMUNICATIONS IN MASS SPECTROMETRY 6351 5% 0% 37
4 ANALYTICA CHIMICA ACTA 4970 7% 0% 54
5 PROCESS CONTROL AND QUALITY 4622 1% 3% 4
6 JOURNAL OF SEPARATION SCIENCE 3520 3% 0% 23
7 AMERICAN LABORATORY 3443 2% 1% 15
8 JOURNAL OF CHROMATOGRAPHY A 3209 6% 0% 46
9 JOURNAL OF MICROCOLUMN SEPARATIONS 3118 1% 1% 7
10 ANALYST 2346 4% 0% 29

Author Key Words



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 MEMBRANE INTRODUCTION MASS SPECTROMETRY 716555 3% 81% 21 Search MEMBRANE+INTRODUCTION+MASS+SPECTROMETRY Search MEMBRANE+INTRODUCTION+MASS+SPECTROMETRY
2 MEMBRANE EXTRACTION 390656 5% 23% 40 Search MEMBRANE+EXTRACTION Search MEMBRANE+EXTRACTION
3 SUPPORTED LIQUID MEMBRANE EXTRACTION 339466 2% 54% 15 Search SUPPORTED+LIQUID+MEMBRANE+EXTRACTION Search SUPPORTED+LIQUID+MEMBRANE+EXTRACTION
4 MEMBRANE INLET MASS SPECTROMETRY 281616 3% 33% 20 Search MEMBRANE+INLET+MASS+SPECTROMETRY Search MEMBRANE+INLET+MASS+SPECTROMETRY
5 MEMBRANE INTRODUCTION 258757 1% 88% 7 Search MEMBRANE+INTRODUCTION Search MEMBRANE+INTRODUCTION
6 MEMBRANE INTRODUCTION MASS SPECTROMETRY MIMS 176025 1% 83% 5 Search MEMBRANE+INTRODUCTION+MASS+SPECTROMETRY+MIMS Search MEMBRANE+INTRODUCTION+MASS+SPECTROMETRY+MIMS
7 MEMBRANE INLET 150200 1% 44% 8 Search MEMBRANE+INLET Search MEMBRANE+INLET
8 MICROTRAP 147855 1% 50% 7 Search MICROTRAP Search MICROTRAP
9 MEMBRANE ASSISTED SOLVENT EXTRACTION 135179 1% 40% 8 Search MEMBRANE+ASSISTED+SOLVENT+EXTRACTION Search MEMBRANE+ASSISTED+SOLVENT+EXTRACTION
10 MICROPOROUS MEMBRANE LIQUID LIQUID EXTRACTION 129372 1% 44% 7 Search MICROPOROUS+MEMBRANE+LIQUID+LIQUID+EXTRACTION Search MICROPOROUS+MEMBRANE+LIQUID+LIQUID+EXTRACTION

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 31651 PHOTOCHEMICAL SAMPLE TREATMENT//STORAGE OF SOIL SAMPLES//2000 60 EC WATER FRAMEWORK DIRECTIVE
2 36053 DEFERRED STANDARD//1ST DERIVATIVE ABSORPTION SPECTRUM//CHEMOMETRIC ACTIVITY
3 26206 ELECTROMEMBRANE EXTRACTION//ELECTROMEMBRANE EXTRACTION EME//ELECTROMEMBRANE
4 6851 QUADRUPOLE ION TRAP//QUADRUPOLE MASS FILTER//RECTILINEAR ION TRAP
5 6506 JOURNAL OF HIGH RESOLUTION CHROMATOGRAPHY & CHROMATOGRAPHY COMMUNICATIONS//HRC-JOURNAL OF HIGH RESOLUTION CHROMATOGRAPHY//LARGE VOLUME INJECTION
6 28544 CHROMATOMEMBRANE CELL//CHROMATOMEMBRANE//CHEM INORGAN ANALYT CHEM
7 2037 DISPERSIVE LIQUID LIQUID MICROEXTRACTION//LIQUID PHASE MICROEXTRACTION//SINGLE DROP MICROEXTRACTION
8 12544 MICRO GAS CHROMATOGRAPHY//FAST GC//FAST GAS CHROMATOGRAPHY
9 18945 AMMONIA DETERMINATION//MEMBRANELESS GAS DIFFUSION//AMMONIUM DETERMINATION
10 22146 STIR BAR SORPTIVE EXTRACTION//ROTATING DISK SORPTIVE EXTRACTION//FLOATING SAMPLING TECHNOLOGY

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