✦ LIBER ✦

Study on the thermal stability of a chiral stationary phase coated on capillaries for GC

✍ Scribed by Takeichi, Tsutomu ;Yada, Hiroshi ;Takayama, Yuzi ;Morikawa, Masami

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 473 KB
Volume: 18
Category: Article
ISSN: 0935-6304
DOI: 10.1002/jhrc.1240181004

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✦ Synopsis

Abstract

A chiral stationary phase prepared by bonding L‐valine‐t‐butylamide to XE‐60 has been coated on glass and metal capillaries. The performances of the chiral glass and metal columns were equivalent to those of commercial fused silica capillary columns. The thermal stability of the glass column was examined up to 280°C. It was found that no appreciable change in separation factor (α value) was observed up to 230°C. The α values gradually decreased between 240 and 260°C, and enantiomer separation was no longer achieved at 280°C. It was concluded that the allowable upper limit temperature of the chiral stationary phase is between 230 and 240°C in the isothermal mode, and ca 260°C in temperature‐programmed mode.

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