2,4-Dinitrophenylhydrazine-coated silica gel cartridge method for determination of formaldehyde in air: identification of an ozone interference

1989 ◽  
Vol 23 (11) ◽  
pp. 1428-1430 ◽  
Author(s):  
Robert R. Arnts ◽  
Silvestre B. Tejada
Keyword(s):  
Silica Gel ◽  
Formaldehyde In Air

Spectrophotometric Method with Silica‐Gel Beads for Determination of Trace Formaldehyde in Air

2005 ◽  
Vol 38 (2) ◽  
pp. 121-130 ◽  
Author(s):  
Hong‐yan Yuan ◽  
Sheng‐e Wang ◽  
Dan Xiao
Keyword(s):  
Silica Gel ◽  
Spectrophotometric Method ◽  
Gel Beads ◽  
Formaldehyde In Air

RETRACTED: Determination of Co(II) in water and soil samples using spectrophotometry coupled with preconcentration on 4-amino methyl pyridine anchored silica gel column

2007 ◽  
Vol 146 (1-2) ◽  
pp. 137-141 ◽  
Author(s):  
C. Sivani ◽  
G. Ramakrishna Naidu ◽  
J. Narasimhulu ◽  
D. Rekha ◽  
J. Dilip Kumar ◽  
...  
Keyword(s):  
Silica Gel ◽  
Soil Samples ◽  
Water And Soil Samples ◽  
Methyl Pyridine

scholarly journals Preparative-scale HPLC Resolution of Metallacyclic η3-Allyltricarbonyliron Complexes and Determination of the Absolute Configuration by X-Ray Crystal Structure Analysis

1999 ◽  
Vol 23 (9) ◽  
pp. 578-579
Author(s):  
Rainer Schobert ◽  
Hermann Pfab ◽  
Jutta Böhmer ◽  
Frank Hampel ◽  
Andreas Werner
Keyword(s):  
Crystal Structure ◽  
Silica Gel ◽  
Structure Analysis ◽  
Absolute Configuration ◽  
Crystal Structure Analysis ◽  
Preparative Scale ◽  
X Ray ◽  
The Absolute

Racemates of (η3-allyl)tricarbonyliron lactone complex Fe(CO)3{η1:η3-C(O)XCH2CHCMeCH2} 1a (X = O) and (η3-allyl)tricarbonyliron lactam complex 2a (X = NMe) are resolved on a preparative scale by HPLC on cellulose tris(3,5-dimethylphenyl)carbamate/silica gel RP-8 and the absolute configuration of (-)-2a is determined by X-ray crystal structure analysis.

Determination of Sulfaquinoxaline, Sulfathiazole, Sulfamerazine, and Sulfamethazine in Feed Concentrates or Premixes

1973 ◽  
Vol 56 (6) ◽  
pp. 1475-1479 ◽  
Author(s):  
Ugo R Cieri
Keyword(s):  
Silica Gel ◽  
The Other ◽  
Uv Absorbance ◽  
The Individual

Abstract Sulfaquinoxaline is determined by its UV absorbance at about 358 nm, where the other 3 sulfonamides do not absorb. Sulfathiazole, sulfamerazine, and sulfamethazine are determined by a quantitative TLC procedure, based on the separation of the compounds on silica gel plates; the spots are extracted and the centrifuged extracts are analyzed spectro-photometrically. A method of calculating the total sulfonamide content, independent of the individual components, is also introduced.

Determination of dimethyl fumarate (DMFu) in silica gel pouches using gas chromatography coupled ion trap mass spectrometry

2011 ◽  
Vol 46 (4) ◽  
pp. 341-349 ◽  
Author(s):  
Patrizia Stefanelli ◽  
Danilo Attard Barbini ◽  
Silvana Girolimetti ◽  
Angela Santilio ◽  
Roberto Dommarco
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Silica Gel ◽  
Ion Trap ◽  
Dimethyl Fumarate ◽  
Ion Trap Mass Spectrometry
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