skip navigation

Justinfo Subscribe to Stay Informed

Add your conference to our Justice Events calendar


NCJRS Abstract


Subscribe to Stay Informed
Want to be in the know? JUSTINFO is a biweekly e-newsletter containing information about new publications, events, training, funding opportunities, and Web-based resources available from the NCJRS Federal sponsors. Sign up to get JUSTINFO in your inbox.

The document referenced below is part of the NCJRS Library collection.
To conduct further searches of the collection, visit the NCJRS Abstracts Database.

How to Obtain Documents
NCJ Number: NCJ 241148     Find in a Library
Title: Development of a Capillary Electrophoresis Method for the Screening of Human Urine for Multiple Drugs of Abuse
Author(s): Ahmed Alnajjar ; Abubakr M. Idris ; Marika Multzenberg ; Bruce McCord
  Journal: Journal of Chromatography B  Volume:856  Issue:1-2  Dated:2007  Pages:62 to 67
Date Published: 2007
Page Count: 6
  Annotation: A new capillary electrophoresis (CE) method was developed and validated for screening human urine for 19 drugs of abuse.
Abstract: Since its inception, CE has proven to have use in the analysis and detection of drugs of abuse due to its high efficiency, reduced sample volume, and rapid analysis; however, when used in standard operating models, CE is not sufficiently sensitive to be applied to trace analysis due to low injection volumes and limited detection path lengths. The current study determined that sample pre-concentration can provide an alternative approach for sensitivity improvement. Techniques, such as solid-phase extraction (SPE), liquid-liquid extraction, and solid-phase microextraction can be used in combination with CE to improve sensitivity. These extraction procedures can be performed through the use of sequential injection (SI) techniques. SI, a second-generation flow injection technique, involves the reduction of sample and reagent volume from milliliters to microliters. In addition, the full automation of the technique enables the entire process to be rapid and precise. Testing results are shown for each of the 19 drugs. The descriptions of materials and methods address chemicals and reagents, instrumentation, CE system, the preparation of standard solutions and samples, the SI-SPE procedure, and the CE procedure. Details are presented on CE development, SI-SPE development, and validation of the method. 4 figures, 2 tables, and 31 references
Main Term(s): Forensics/Forensic Sciences
Index Term(s): Urinalysis ; Drug detection ; Drug testing ; NIJ grant-related documents
Sponsoring Agency: National Institute of Justice (NIJ)
US Department of Justice
Office of Justice Programs
United States of America
Grant Number: 2002-MU-MU-K002
Type: Test/Measurement
Country: United States of America
Language: English
  To cite this abstract, use the following link:

* A link to the full-text document is provided whenever possible. For documents not available online, a link to the publisher's web site is provided.