JDS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Dairy Science Vol. 73 No. 2 319-324
© 1990 by American Dairy Science Association ®
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Hansen, A. P.
Right arrow Articles by Kinsella, J. E.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Hansen, A. P.
Right arrow Articles by Kinsella, J. E.

Modification of an External Closed Inlet Device Analyzer to Prevent Binding of Methyl Ketones to the Septa and Cross-Contamination of Samples

A. P. Hansen 1, Z. Hague 2, and J. E. Kinsella 3

1 North Carolina State University, Raleigh 27695
2 Mississippi State University, Mississippi State 39762
3 Cornell University, Ithaca, New York 14853

An external closed inlet device analyzer was used to determine the binding affinity of methyl ketones to delipidated milk protein powder. Difficulties in replicating peak size and peak retention on triplicate sample runs were experienced. After a series of tests on the analyzer, it was evident the silicone septa were binding the carbonyls. Septa were removed and replaced with stainless steel Swagelok fittings and graphite ferrules. A sample tube was put in the heating chamber, purged, and the methyl ketones quantified. Triplicate runs gave excellent replication of both peak size and retention times.

Key Words: external closed inlet device analyzer • methyl ketone binding affinity • delipidated milk protein

Submitted on June 1, 1989
Accepted on September 5, 1989






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1990 by the American Dairy Science Association ®.