Glass capillary adsorption columns for gas chromatography

Capillary gas adsorption chromatography

“…The efficiency as determined for 2,4-dimethylpentene was 550 theoretical plates per meter. [75][76][77] Early in the 1960s the dynamic silica gel coating method was employed by Perkin-Elmer for the com-mercial preparation of copper capillary adsorption columns. These columns were ca.…”

Capillary gas adsorption chromatography

“…The efficiency as determined for 2,4-dimethylpentene was 550 theoretical plates per meter. [75][76][77] Early in the 1960s the dynamic silica gel coating method was employed by Perkin-Elmer for the com-mercial preparation of copper capillary adsorption columns. These columns were ca.…”

On-column injection with glass capillary gas chromatography columns

“…i.d. glass capillary column supplied by Schwartz (10) was utilized with an attached inlet injection and outlet sections of fused silica capillary tubing (uncoated, 20 cm X 0.32 mm i.d,, Quadrex Corp., New Haven, CT). A 1 jitL hexane solution contained about 1 part in 6000 of each of benzene, toluene, ethylbenzene, and xylenes (para, meta), and about 1 part in 25000 of each of n-nonane, ra-decane, and n-undecane was injected with our on-column injector (11).…”

Preparation of silica porous‐layer open‐tubular columns using fused silica capillaries

“…Separations of C, to C,, were shown, but resolution was low and the peaks were broad. Mathews et al described a column containing a 0.2 pm porous layer of silica for the separation of C, to C, hydrocarbons [18]. While the peaks were very sharp, the resolution was still low.…”

Capillary gas adsorption chromatography

“…The efficiency as determined for 2,4-dimethylpentene was 550 theoretical plates per meter. [75][76][77] Early in the 1960s the dynamic silica gel coating method was employed by Perkin-Elmer for the com-mercial preparation of copper capillary adsorption columns. These columns were ca.…”

On-column injection with glass capillary gas chromatography columns

“…i.d. glass capillary column supplied by Schwartz (10) was utilized with an attached inlet injection and outlet sections of fused silica capillary tubing (uncoated, 20 cm X 0.32 mm i.d,, Quadrex Corp., New Haven, CT). A 1 jitL hexane solution contained about 1 part in 6000 of each of benzene, toluene, ethylbenzene, and xylenes (para, meta), and about 1 part in 25000 of each of n-nonane, ra-decane, and n-undecane was injected with our on-column injector (11).…”

Preparation of silica porous‐layer open‐tubular columns using fused silica capillaries

“…Separations of C, to C,, were shown, but resolution was low and the peaks were broad. Mathews et al described a column containing a 0.2 pm porous layer of silica for the separation of C, to C, hydrocarbons [18]. While the peaks were very sharp, the resolution was still low.…”

Capillary gas adsorption chromatography

“…The efficiency as determined for 2,4-dimethylpentene was 550 theoretical plates per meter. [75][76][77] Early in the 1960s the dynamic silica gel coating method was employed by Perkin-Elmer for the com-mercial preparation of copper capillary adsorption columns. These columns were ca.…”

On-column injection with glass capillary gas chromatography columns

“…i.d. glass capillary column supplied by Schwartz (10) was utilized with an attached inlet injection and outlet sections of fused silica capillary tubing (uncoated, 20 cm X 0.32 mm i.d,, Quadrex Corp., New Haven, CT). A 1 jitL hexane solution contained about 1 part in 6000 of each of benzene, toluene, ethylbenzene, and xylenes (para, meta), and about 1 part in 25000 of each of n-nonane, ra-decane, and n-undecane was injected with our on-column injector (11).…”

Preparation of silica porous‐layer open‐tubular columns using fused silica capillaries

“…Separations of C, to C,, were shown, but resolution was low and the peaks were broad. Mathews et al described a column containing a 0.2 pm porous layer of silica for the separation of C, to C, hydrocarbons [18]. While the peaks were very sharp, the resolution was still low.…”