A Simple Procedure That Allows Software to Determine if a GC/MS Blank Injection Is Contaminated

Volume 41, Issue 4 (July 1996)

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ISSN: 0022-1198
CODEN: JFSCA
Page Count: 4

A Simple Procedure That Allows Software to Determine if a GC/MS Blank Injection Is Contaminated
Waggoner, RW
Chemist, North Carolina State Bureau of Investigation, Crime Laboratory, NC

(Received 10 August 1995; accepted 21 December 1995)

Abstract

One problem commonly encountered by operators of GC/MS systems is the injection of solvent blanks which are contaminated. The sources of this contamination are many and are often of an undertermined origin. The contaminated blank is an especially troublesome problem when the operator is running a sequence of samples using an autoinjector. The injection of a contaminated blank during a sequence of samples could jeopardize the data collected for any ensuing samples. A simple macro program, described here, will allow the Hewlett-Packard MS ChemStation software to decide if a blank is contaminated. If contamination is present then the software will direct the autoinjector to make the necessary reinjections.

Keywords:
forensic science, gas chromatography/mass spectrometry, autosamplers, macro programs

Paper ID: JFS13978J
DOI: 10.1520/JFS13978J
ASTM International is a member of CrossRef.

Author Title A Simple Procedure That Allows Software to Determine if a GC/MS Blank Injection Is Contaminated Symposium , 0000-00-00 Committee E30

		SEDL / Journals / Journal of Forensic Sciences (JOFS) / Citation Page Volume 41, Issue 4 (July 1996) Click here to download this paper now for $25 PDF (320K) View License Agreement ISSN: 0022-1198 CODEN: JFSCA Page Count: 4 A Simple Procedure That Allows Software to Determine if a GC/MS Blank Injection Is Contaminated Waggoner, RW Chemist, North Carolina State Bureau of Investigation, Crime Laboratory, NC (Received 10 August 1995; accepted 21 December 1995) Abstract One problem commonly encountered by operators of GC/MS systems is the injection of solvent blanks which are contaminated. The sources of this contamination are many and are often of an undertermined origin. The contaminated blank is an especially troublesome problem when the operator is running a sequence of samples using an autoinjector. The injection of a contaminated blank during a sequence of samples could jeopardize the data collected for any ensuing samples. A simple macro program, described here, will allow the Hewlett-Packard MS ChemStation software to decide if a blank is contaminated. If contamination is present then the software will direct the autoinjector to make the necessary reinjections. Keywords: forensic science, gas chromatography/mass spectrometry, autosamplers, macro programs Paper ID: JFS13978J DOI: 10.1520/JFS13978J ASTM International is a member of CrossRef. Author Title A Simple Procedure That Allows Software to Determine if a GC/MS Blank Injection Is Contaminated Symposium , 0000-00-00 Committee E30