Simple and versatile method for connecting fused silica and glass capillaries

✍ Scribed by Vecchi, M. ;Walther, W.

• Publisher: John Wiley and Sons
• Year: 1988
• Tongue: English
• Weight: 140 KB
• Volume: 11
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240110408

✦ Synopsis

Gas chromatography

Connector

Coupling capillary columns has become an important auxiliary method in modern gas chromatography. In the past, numerous coupling procedures have been published [l-181. However, recently the ideas expressed by F. Etzweiler [Q], K. Grob [ l 11, and E. R. Rohwer [17] have been realized in the form of a comercially available connector which is very well suited for the coupling of fused silica columns. -Unfortunately, the problem of coupling fused silica ends to glass capillaries has still not been solved satisfactorily. Until recently, we used the method described by Grob [ l l ] . This technique suffers, however, from two distinct disadvantages. First, the ends of the glass capillary have to be straightened, which isgenerally regarded asaproblem.Secondly, the connections have a relatively low mechanical stability. About a year ago we developed our own coupling method to overcome these difficulties. The satisfactory results we obtained prompted us to publish it.