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NCJ Number: NCJ 187111     Find in a Library
Title: Trace Detection of Narcotics Using a Preconcentrator/Ion Mobility Spectrometer System, NIJ Report 602-00
  Document URL: Text PDF 
Author(s): John E. Parmeter ; Gary A. Eiceman
Corporate Author: National Institute of Standards and Technology (NIST)
United States of America
Date Published: 04/2001
Page Count: 26
  Annotation: This document presents research conducted by the Office of Law Enforcement Standards (OLES) on trace drug detection.
Abstract: The detection of illicit drugs is currently an area of major research interest. One category of drug detection involves indirect detection of a drug by collecting and analyzing small quantities of vapor or particle contamination. Ion mobility spectrometry (IMS) is perhaps the most widely used technology developed for this type of application. IMS has a number of advantageous features, including the potential ability to detect almost all drugs of interest, moderate cost, near instantaneous response time, and sensitivity in the sub-parts per billion range in some cases. There is a present need to improve sampling techniques in order to apply the trace detection of illicit drugs to the problem of personnel screening. This study was performed at New Mexico State University (NMSU) during fiscal year 1999. The experiments combined a chemical preconcentrator and associated control hardware developed at Sandia National Laboratories (SNL) with an IMS constructed at NMSU. The goal was to investigate the efficacy of the preconcentrator in the general field of drug detection. An initial determination was being sought concerning the feasibility of a trace drug detection portal for personnel screening that would operate on the same principles as the explosives detection portal. Based on the results, it appears that such a drug detection portal could be developed, but more research and development is needed. The next step would be to extend the present studies to include detection of both trace and bulk drug samples in a mock-up portal. The studies to be performed would include experiments both with true trace samples, such as clothing contaminated with fingerprints containing drug particles, and with bulk drug samples concealed under clothing. The IMS was used to detect drugs with and without nicotinamide dopant. Studies of the preconcentrator efficiency are discussed. The IMS could easily detect 1 microgram of all the drugs studied, which included methamphetamine, cocaine, heroin, and tetrahydrocannabinol (THC). 10 figures
Main Term(s): Drug detection ; Drug research
Index Term(s): Evidence collection ; Smuggling/Trafficking ; Crime detection ; Drug law offenses ; Drug law enforcement ; Drug analysis
Sponsoring Agency: US Dept of Justice
National Institute of Justice
Office of Science and Technology
United States of America
Grant Number: 94-IJ-R-004
Sale Source: NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America

National Law Enforcement and Corrections Technology Center (NLECTC)
700 N. Frederick Ave.
Bldg. 181, Room 1L30
Gaithersburg, MD 20879
United States of America
Type: Report (Study/Research)
Country: United States of America
Language: English
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