Class information for:
Level 1: AMMONIA DETERMINATION//AMMONIUM DETERMINATION//MEMBRANELESS GAS DIFFUSION

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
20594 453 21.9 53%


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
95 3       CHEMISTRY, ANALYTICAL//JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY//SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY 76493
1280 2             NITRITE//CHEMISTRY, ANALYTICAL//ANALYTICA CHIMICA ACTA 8712
20594 1                   AMMONIA DETERMINATION//AMMONIUM DETERMINATION//MEMBRANELESS GAS DIFFUSION 453

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 AMMONIA DETERMINATION authKW 479764 2% 65% 11
2 AMMONIUM DETERMINATION authKW 239657 2% 44% 8
3 MEMBRANELESS GAS DIFFUSION authKW 215698 1% 80% 4
4 BERTHELOT REACTION authKW 168510 1% 50% 5
5 AMMONIA ANALYSIS authKW 151662 1% 75% 3
6 GAS DIFFUSION authKW 145763 6% 8% 27
7 AMMONIUM ION DETERMINATION authKW 134812 0% 100% 2
8 CONTINUOUS PERVAPORATION authKW 134812 0% 100% 2
9 GAS PERMEATION SYSTEM authKW 134812 0% 100% 2
10 MEMBRANELESS VAPORIZATION authKW 134812 0% 100% 2

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 Chemistry, Analytical 14209 75% 0% 338
2 Soil Science 318 5% 0% 24
3 Electrochemistry 153 6% 0% 25
4 Instruments & Instrumentation 112 6% 0% 26
5 Biochemical Research Methods 55 5% 0% 21
6 Environmental Sciences 53 7% 0% 32
7 Oceanography 35 2% 0% 11
8 Agronomy 32 3% 0% 13
9 Chemistry, Multidisciplinary 20 8% 0% 34
10 Spectroscopy 14 2% 0% 10

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 IND CHEM TECHNOL PROGRAMME 101106 1% 50% 3
2 CHANCELLOR OFF 67406 0% 100% 1
3 CHEM MAT ENGN CHEM BIOCHEM 67406 0% 100% 1
4 CHEM PHAMACEUT SCI 67406 0% 100% 1
5 FLOW INNOVAT SCI TECHNOL 67406 0% 100% 1
6 GRP MINTOTA 67406 0% 100% 1
7 INVESTIGAC MULTIDISCIPLINARIA AVANZADA CIENCI 67406 0% 100% 1
8 MARINE BIOSENSOR BIOSENSOR GRP 67406 0% 100% 1
9 MARINE COASTAL ENVIRONM AMCE PROGRAM 67406 0% 100% 1
10 OCEAN SYST ENGN SEATECH 67406 0% 100% 1

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 ANALYTICA CHIMICA ACTA 13678 15% 0% 70
2 TALANTA 7443 9% 0% 43
3 BUNSEKI KAGAKU 5087 5% 0% 21
4 ANALYST 3338 6% 0% 27
5 INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY 2960 3% 0% 12
6 FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY 2060 3% 0% 13
7 QUIMICA ANALITICA 1902 1% 1% 3
8 ANALYTICAL LETTERS 1692 3% 0% 13
9 ANALYTICAL CHEMISTRY 1657 7% 0% 30
10 ZOOTECNICA E NUTRIZIONE ANIMALE 1642 0% 2% 1

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 AMMONIA DETERMINATION 479764 2% 65% 11 Search AMMONIA+DETERMINATION Search AMMONIA+DETERMINATION
2 AMMONIUM DETERMINATION 239657 2% 44% 8 Search AMMONIUM+DETERMINATION Search AMMONIUM+DETERMINATION
3 MEMBRANELESS GAS DIFFUSION 215698 1% 80% 4 Search MEMBRANELESS+GAS+DIFFUSION Search MEMBRANELESS+GAS+DIFFUSION
4 BERTHELOT REACTION 168510 1% 50% 5 Search BERTHELOT+REACTION Search BERTHELOT+REACTION
5 AMMONIA ANALYSIS 151662 1% 75% 3 Search AMMONIA+ANALYSIS Search AMMONIA+ANALYSIS
6 GAS DIFFUSION 145763 6% 8% 27 Search GAS+DIFFUSION Search GAS+DIFFUSION
7 AMMONIUM ION DETERMINATION 134812 0% 100% 2 Search AMMONIUM+ION+DETERMINATION Search AMMONIUM+ION+DETERMINATION
8 CONTINUOUS PERVAPORATION 134812 0% 100% 2 Search CONTINUOUS+PERVAPORATION Search CONTINUOUS+PERVAPORATION
9 GAS PERMEATION SYSTEM 134812 0% 100% 2 Search GAS+PERMEATION+SYSTEM Search GAS+PERMEATION+SYSTEM
10 MEMBRANELESS VAPORIZATION 134812 0% 100% 2 Search MEMBRANELESS+VAPORIZATION Search MEMBRANELESS+VAPORIZATION

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 SRAJ, LO , ALMEIDA, MIGS , SWEARER, SE , KOLEV, SD , MCKELVIE, ID , (2014) ANALYTICAL CHALLENGES AND ADVANTAGES OF USING FLOW-BASED METHODOLOGIES FOR AMMONIA DETERMINATION IN ESTUARINE AND MARINE WATERS.TRAC-TRENDS IN ANALYTICAL CHEMISTRY. VOL. 59. ISSUE . P. 83 -92 28 64% 5
2 ZHU, Y , YUAN, DX , LIN, HY , ZHOU, TJ , (2016) DETERMINATION OF AMMONIUM IN SEAWATER BY PURGE-AND-TRAP AND FLOW INJECTION WITH FLUORESCENCE DETECTION.ANALYTICAL LETTERS. VOL. 49. ISSUE 5. P. 665 -675 22 67% 0
3 ALMEIDA, MIGS , ESTELA, JM , SEGUNDO, MA , CERDA, V , (2011) A MEMBRANELESS GAS-DIFFUSION UNIT - MULTISYRINGE FLOW INJECTION SPECTROPHOTOMETRIC METHOD FOR AMMONIUM DETERMINATION IN UNTREATED ENVIRONMENTAL SAMPLES.TALANTA. VOL. 84. ISSUE 5. P. 1244-1252 18 78% 5
4 BUCUR, B , ICARDO, MC , CALATAYUD, JM , (2006) SPECTROPHOTOMETRIC DETERMINATION OF AMMONIUM BY AN RFIA ASSEMBLY.REVUE ROUMAINE DE CHIMIE. VOL. 51. ISSUE 2. P. 101 -108 22 71% 3
5 OLIVEIRA, SM , LOPES, TIMS , TOTH, IV , RANGEL, AOSS , (2007) A MULTI-COMMUTED FLOW INJECTION SYSTEM WITH A MULTI-CHANNEL PROPULSION UNIT PLACED BEFORE DETECTION: SPECTROPHOTOMETRIC DETERMINATION OF AMMONIUM.ANALYTICA CHIMICA ACTA. VOL. 600. ISSUE 1-2. P. 29-34 19 70% 19
6 HORSTKOTTE, B , DUARTE, CM , CERDA, V , (2011) A MINIATURE AND FIELD-APPLICABLE MULTIPUMPING FLOW ANALYZER FOR AMMONIUM MONITORING IN SEAWATER WITH FLUORESCENCE DETECTION.TALANTA. VOL. 85. ISSUE 1. P. 380 -385 14 82% 11
7 TIMOFEEVA, II , BULATOV, AV , MOSKVIN, AL , KOLEV, SD , (2015) A GAS-DIFFUSION FLOW INJECTION METHOD COUPLED WITH ONLINE SOLID-LIQUID EXTRACTION FOR THE DETERMINATION OF AMMONIUM IN SOLID SAMPLES.TALANTA. VOL. 142. ISSUE . P. 140 -144 15 68% 1
8 ZHU, Y , YUAN, DX , HUANG, YM , MA, J , FENG, SC , (2013) A SENSITIVE FLOW-BATCH SYSTEM FOR ON BOARD DETERMINATION OF ULTRA-TRACE AMMONIUM IN SEAWATER: METHOD DEVELOPMENT AND SHIPBOARD APPLICATION.ANALYTICA CHIMICA ACTA. VOL. 794. ISSUE . P. 47-54 16 64% 3
9 DE CASTRO, MDL , GAMIZ-GRACIA, L , (2000) ANALYTICAL PERVAPORATION: AN ADVANTAGEOUS ALTERNATIVE TO HEADSPACE AND PURGE-AND-TRAP TECHNIQUES.CHROMATOGRAPHIA. VOL. 52. ISSUE 5-6. P. 265-272 21 66% 5
10 HONG, LC , SUN, XY , WANG, LQ , (2009) DETERMINATION OF AMMONIA IN WATER USING FLOW INJECTION ANALYSIS WITH AUTOMATIC PERVAPORATION ENRICHMENT.ANALYTICAL LETTERS. VOL. 42. ISSUE 15. P. 2364-2377 12 86% 3

Classes with closest relation at Level 1


Rank Class id link
1 1913 FLOW ANALYSIS//ANALYTICA CHIMICA ACTA//SEQUENTIAL INJECTION ANALYSIS
2 29801 2 5 BROMO 2 PYRIDYLAXO 5 N PROPYL N SULFOPROPYLAMINO ANILINE//2 5 BROMO 2 PYRIDYLAZO 5 N PROPYL N SULFOPROPYLAMINOANILINE FEII COMPLEX REAGENT//ADAPTATIVE ANALYSIS
3 11578 PHOSPHATE DETERMINATION//PHOSPHOMOLYBDENUM BLUE//SILICATE INTERFERENCE
4 19359 UREA SENSOR//UREA BIOSENSOR//UREASE
5 20196 LIQUID CORE WAVEGUIDE//PAIRED EMITTER DETECTOR DIODE//LIQUID CORE OPTICAL FIBER
6 36630 BIOCHEMIA MEDICA//DATA NUMERICAL//DIAGNOSTIC ACCURACY TESTS
7 24496 JOURNAL OF THE ASSOCIATION OF PUBLIC ANALYSTS//KJELDAHL METHOD//DUMAS METHOD
8 14937 SULFITE//SULFITE DETERMINATION//BISULFITE ANION
9 28692 AMMONIA ELECTROLYSIS//AMMONIA ELECTRO OXIDATION//DIRECT AMMONIA FUEL CELL
10 30744 DIACETYL//FLAVORINGS//BUTTER FLAVORINGS

Go to start page