Métodos USP

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Descrição

Na Farmacopeia dos Estados Unidos (USP), as fases estacionárias da GC e HPLC (fase líquida da coluna, gás transportador, etc.) são indicadas por um número código. Números código representativos e as colunas capilares correspondentes estão resumidos na tabela abaixo.

 

Código USP Composição da fase Coluna recomendada
G1 Dimethylpolysiloxane oil InertCap 1MS, InertCap 1, InertCap 1HT
G2 Dimethylpolysiloxane gum InertCap 1MS, InertCap 1, InertCap 1HT
G3 50 % Phenyl – 50 % methylpolysiloxane InertCap 17MS, InertCap 17
G6 Trifluoropropylmethyl polysiloxane InertCap 210
G7 50 % 3-Cyanopropyl – 50 % phenylmethylsilicone InertCap 225
G14 Polyethylene glycol(av.mot.wt.of 950 to 1050) InertCap Pure-WAX, InertCap WAX, InertCap WAX-HT
G15 Polyethylene glycol(av.mot.wt.of 3000 to 3700) InertCap Pure-WAX, InertCap WAX, InertCap WAX-HT
G16 Polyethylene glycol compound(av.mot.wt.about 15,000). A high molecular weight compound with a diepoxide linker Polyethylene glycol InertCap Pure-WAX, InertCap WAX, InertCap WAX-HT
G19 25 % Phenyl – 25 % cyanopropyl – 50 % methylsilicone InertCap 225
G20 Polyethylene glycol(av.mot.wt.of 380 to 420) InertCap Pure-WAX, InertCap WAX, InertCap WAX-HT
G27 5 % Phenyl – 95 % methylpolysiloxane InertCap 5MS/Sil, InertCap 5MS, InertCap 5
G28 25 % Phenyl – 75 % methylpolysiloxane InertCap 25, InertCap AQUATIC, InertCap AQUATIC-2
G35 A high molecular weight compound of a polyethylene glycol and a diepoxide that is esterified with nitroterephthalic acid InertCap FFAP
G36 1 % Vinyl – 5 % phenylmethylpolysiloxane InertCap 5MS/Sil, InertCap 5MS, InertCap 5
G38 Phase G1 containing a small percentage of a tailing inhibitor InertCap 1MS, InertCap 1
G39 Polyethylene glycol(av.mol.wt.of about 1500) InertCap Pure-WAX, InertCap WAX, InertCap WAX-HT
G42 35 % phenyl-65 % dimethylpolysiloxane(percentage refer to molar substitution) InertCap 35
G43 6 % cyanopropylphenyl-94 % dimethylpolysiloxane InertCap 624, InertCap 1301
G46 14 % Cyanopropylphenyl – 86 % methylpolysiloxane InertCap 1701
G47 Polyethylene glycol(av.mol.wt.of about 8000) InertCap Pure-WAX, InertCap WAX, InertCap WAX-HT

 

 

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