Stage 2/Instrumental Analysis & Isolation(HPLC)

GC column selection guide

Acidrain 2010. 10. 19. 07:04
 

Similar polysiloxane Phases

BONDED PHASE TEMP °C GENERAL USE OF PHASE EQUIVALENTS
Methyl polysiloxane 50-325 Most frequently used phase in GC. Low selectivity, separates compounds according to boiling points. Excellent thermal stability SE-30, OV-1, OV-101, DB-1, SPB-1, BP-1, HP-1, ULTRA-1, RTx-1, AT-1, CPSil-5
Methyl 5% Phenyl Polysilozane 50-325 Similar to methyl polysiloxane but slightly more selective due to phenyl content. Excellent thermal stability. SE-54, OV-23, DB-5, SPB-5, BP-5, HP-5, ULTRA 2, RTx-5, CPSil-8
Methyl 50% Phenyl Polysiloxane 40-325 Added selectivity due to higher phenyl content. Usually retains similar compounds longer than methyl silicone. Provides efficient separations of PAHS and biomedical samples such as drugs, sugars and steroids. Good thermal stability. OV-17, DB-17, SPB-7, BP-10, HP-17, RTx-17, AT-50,
50% Trifluoropropyl 50% Methyl polysiloxane 40-300 Selectivity for compounds with lone pair electrons or carbonyl groups. Retains oxygenated compounds in the order ether, hydroxy, ester and keto Widely used as a confirmatory phase for chlorinated pesticides.Also suitable for PCB’s, phenols and nitroaromatics. Good thermal stability. DB-210, RTx-200, HP-210
6% Cyanopropylphenyl 94% Methylpolysiloxane 30-320 An additional choice for a general purpose phase with nominal selectivity for polarizable and polar compounds. More of a boiling point phase than 007-1701; and exhibits less retention of polyaromatic compounds than 007-17.Good thermal stability. DB-1301, RTx-1301, HP-1301
Methyl 7% Cyanopropyl 7% Phenyl Polysiloxane 280 Unique selectivity of cyanopropyl and phenyl groups provide efficient separations of deriviitized sugars and many environmental samples. Not truly a polar phase. Good thermal stability DB-1701, CPSil-19, RTx-1701, AT-1701
Methyl 25% Cyanopropyl 25% Phenyl Polyciloxane 40-240 Polar phase which provides efficient separations of polar molecules such as fatty acids and alditol acetate derivatives of sugars. Fair thermal stability DB-255, HP-255, CPSil-43, RTx-225, AT-255
Polyethylene Glycol 20-260 Carbowax 20M is a polyethylene glycol phase which demonstrates unique selectivity hydrogen bonding-type molecules. Particularly useful for the analysis of complex oxygenated samples but is susceptible to oxygen degradation. Not recommended for the analysis of mixtures containing silylating reagents DB-Wax, Supelsowax 10, Super-ox, CPWax-52, Stabilwax, BP-20, HP-20M, AT-Wax
Free Fatty Acid Phase 20-260 The product of Carbowax 20M and 2- Nitroterephthalic acid. Particularly useful for volatile fatty acids and fatty acid methyl esters (FAMEs). Good thermal stability but susceptible to oxygen degradation. Not recommended for the analyses of mixtures containing salylating reagents OV-351, DB-Wax, SP-1000, AT-1000, HP-FFAP, AT-1000
Methyl Phenyl Cyanopropyl Polysiloxane 20-260 A series of specially synthesized stationary phases of mid-polarity with unique selectivity due to cyanopropyl and phenyl groups .Configured for difficult environmental analyses. Good thermal stability DB-624, VOCAL, DB-608, RTx-502, RTx-Volatile, AT-624, SPB-608
Cyanopropyl Polysiloxane 40-280 A highly polar stationary phase.Ideal for fatty acid methyl esters (FAME) analysis, dioxin, and furan separations and other separations requiring unique selectivity and polarity. Good thermal stability SP-2340, SP-2330, DB-23, OV-275, AT-SILAR

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Silicone Phases

High Purity - Low Bleed - Thermally stable silicone phases
General Use

SILICONE TYPE VISCOSITY SOLVENT TEMP 0C
SE-30(ultra) Methyl GUM Chloroform 350
OV-1 Methyl GUM Toluene 350
OV-101 Methyl 1500 Toluene 350
OV-3 10% Phenyl Methyl 500 Acetone 350
OV-7 20% Phenyl Methyl 500 Acetone 350
OV 61 33% Phenyl Methyl 50,000 Acetone 350
OV-11 35% PhenylMethyl 1300 Acetone 350
OV-17 50%Phenyl MethylMethyl 1300 Acetone 350
OV-22 65% Phenyl Methyl 1300 Acetone 350
OV-25 75% Phenyl Methyl >15,000 Acetone 350
OV-210 50% Trifluoropropyl, Methyl 10,000 Chloroform 275
OV-225 25% Cyanopropyl,
25%phenyl, methyl		 9.000 Acetone 275
OV-275 Cyanopropyl,
phenyl methylMethyl
highest polarity		 unknown Acetone 250

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Manufacturers Equivalent Phases

High Temperature phases, Petrochemical phases, and Environmental phases.
QUAD
REX		 J W SUPEL
CO		 HP RES
TEK		 CHROM
PACK		 ALL
TECH		 SGE NON
BONDED
SPB
octyl		               squalane
007-1 DB-1 SPB-1 HP-1 RTx-1 CPSil-1 AT-1 BP-1 SE=30
SP-2100
  DB-1ht   ultra-1         OV-1
OV-101
007-2 DB-5 SPB-5 HP-5 RTx-5 CPSil-8CP AT-5 BP-5 SE-54
SE-52
      ultra-2         OV-73
007-7   SPB-20   RTx-20       OV-7
007-1300 BDB-1301   HP-1301 RTx=1301        
007-11   SPB-35 HP-35 RTx-3   AT-35   0V-11
007-1701 DB-1701 SPB-1701   RTx-1701 CPSil-19CB AT-1701 BP-10 0V-1701
007-17 DB-17 SP-2250 HP-50 RTx-50   AT-50   0V-17,SP-2250
007-65HT       RTx-65 TAP      
007-210 DB-210     RTx=200        
007-225 DB-225 SP-2330 HP-225 RTx-225 CPSil-43CB AT-225 BP-225  
007-CW DB-WAX SUPELCO
WAX-10		 HP-INNOWAX STABIL
WAX		 CP-WAX 52CB AT-WAX BP-20 CARBO
WAX 20M
007-FFAP DB-FFAP NUKOL HP-FFAP STABIL
WAX DA		 CP Wax 58cb-1000   bp-21 sp-1000, 0v-351
007-23 DB-23 SP-2330   RTx-2330 CPSil-88CB AT-SILAR BPX70 SP-2330
PLT-5A GS-MOL SIEVE     Rt M sieve        

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Manufacturer Equivalents
Environmental phases

QUADREX J W SUPELCO HP RESTEK CHROMPACK ALLTECH SGE
007-608 DB-608 SPB-608 HP-608 RTx-35 CPSil 8CB pesticide BP608
007-624 DB-624 VOCOL HP-624 RTx-volatiles   AT-624  
  DB-5.625 PTE-5 HP-5MS RTx-RTx1-5     BPX625
  DB-5 MS            
007-502 DB-vrx   HP-VOC RTx-502.2
RTx volatiles		      
    PTA-5   RTx-amines      
    SAC-5          
007-624 DB-624 SPB-204 HP-624 RTx-624 CPSil 13CB AT-624 BPX624
007-502 DB-502.2   HP-VOC RTx-502.2   AT-624 BPX624
007-502 DB-502.2   HP-VOC RTx-502.2      
Sup-Herb              
007-608 DB-608 SPB-608 HP-608   CPSil 8CB AT-pesticides BPX608

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Manufacturer Equivalents
Petrochemical phases

QUADREX J W SUPELCO HP RESTEK CHROMPACK ALLTECH SGE
007-1-50-0.5F   Petrocol DH 50.2 HP-PONA   Squalane    
007-1-100-9.5F DB-PETRO 100 Petrocol DH       8CB AT-PETRO  
007-1-10V-1.OF DB-2887 Petrocol 2887 D2887   SimDist-CB AT-2887  
007-1-10V-5.OF   Petrocol 3710 D3710     8CB AT-3710  
007-Sler-30W-4.OF   SPB-1 Sulfur       AT-Sulfur  
400=1ht DB-1ht SPB-1 TG         Ht-5
    Petrocol EX2887         Ht-5
    SPB-1 Thin film          

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