21006
GC Stationary Phase
phase Apiezon L, bottle of 25 g
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About This Item
Código UNSPSC:
41115717
Produtos recomendados
Formulário
solid
embalagem
bottle of 25 g
Parâmetros
50-300 °C temp. range
técnica(s)
gas chromatography (GC): suitable
Grupo ativo da matriz
Apiezon L phase
solubilidade
chloroform, toluene: soluble
tipo de coluna
packed GC
Descrição geral
GC methods are divided into two classes depending on the nature of stationary phases; gas-solid chromatography (GSC) and gas-liquid chromatography (GLC). GSC has solid adsorptive material and solute particles are removed from mobile phase by electrostatic forces. GLC has a thin layer of liquid coated or bonded on the surface of an inert particle or on the walls of the column where solute particles are retained in the liquid phase based on their partition coefficients.[1] The primary necessity of a stationary phase is to provide sample separation sustaining phase integrity over a reasonable period of time. It should be stable for the chemical and thermal changes. Selectivity, peak symmetry, analysis time, degree of separation and peak tailing are a few parameters which are considered while choosing a stationary phase.[2] Apiezon L is basically purified hydrocarbon grease which is suitable as a liquid phase for GC analysis. It is considered as one of the most selective phase for Polychlorinated Biphenyls (PCB) congeners.[3]
Synthesized specifically to be purer, of narrow molecular weight range, and without trace catalysts or impurities for use as a GC stationary phase.
Aplicação
Apiezon L may be used as stationary phase to determine the retention indices of benzene and benzene derivatives on the basis of their molecular structure using GC equipped with a thermal conductivity detector.[4]
Código de classe de armazenamento
13 - Non Combustible Solids
Classe de risco de água (WGK)
WGK 3
Ponto de fulgor (°F)
Not applicable
Ponto de fulgor (°C)
Not applicable
Equipamento de proteção individual
Eyeshields, Gloves, type N95 (US)
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Certificados de análise (COA)
Lot/Batch Number
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Encontre a documentação dos produtos que você adquiriu recentemente na biblioteca de documentos.
Mitchell D. Erickson
Analytical Chemistry of PCBs, 250-250 (1997)
Calculation of retention indices for benzene and benzene derivatives on the basis of molecular structure.
Cook, Lawrence E., and Frank M. Raushel.
Journal of Chromatography A, 65, 556-559 (1972)
David B. Troy, Paul Beringer
Remington: The Science and Practice of Pharmacy, 605-605 (2006)
James P. Lodge, Jr.
Methods of Air Sampling and Analysis, 98-98 (1988)
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