Forensics, Narcotics

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Tom Brettell, an associate professor of chemistry at Cedar Crest College, recently conducted a survey of gas chromatography column use in forensic laboratories in the United States.

DBS in Doping

The Column

Dried blood spot (DBS) sampling and high performance liquid chromatography coupled to high-resolution tandem mass spectrometry (HPLC–MS) has been demonstrated in the routine testing of athletes for anabolic steroid esters.

Tom Brettell recently conducted a survey of GC column use in forensic laboratories in the United States. Here is what he found, in terms of the types of columns they are using and the problems they face.

E-Separation Solutions

This Wednesday afternoon session will include discussion of LC?MS analysis of cathinones in urine, ESI-MS analysis of compounds in mahogany wood, MS with a dual ionization source for analyzing a drug, a species-specific dating technique for human bone, forensic analysis of polymorphisms in hair shaft protein, and LC?MS-MS analysis of opioids in urine.

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Cocaine cutting

The Column

Many drugs that are sold on the street have been modified or diluted by the dealer and as a consequence forensic laboratories are overwhelmed with samples, which can take a long time to process.

The Column

The current state of economic affairs is tumultous; as the economy struggles to bounce back, companies across all industries are becoming more creative in finding ways to reduce costs without sacrificing the quality of their goods or services. According to a recent survey conducted by the Society of Forensic Toxicologists (SOFT), 64.5% of forensic labs surveyed are implementing changes, or plan to implement changes, as a result of limited resources.

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Doping diagnosis

The Column

Banned substance use in sports still remains a controversial and highly publicized subject. A team of scientists from the Italian Sports Medicine Federation in Rome, Italy, has developed a screening procedure specifically designed for the detection of saccharides and polyalcohols in human urine, focusing specifically on dextran, hydroxyethyl starch and mannitol.

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E-Separation Solutions

A plastic-wrapped bundle of herbs packaged and sent halfway around the world. A cardboard box filled with blister-packaged counterfeit tablets. A bag of coffee. One-half tablet, either cut or bitten. A single open capsule with only a residue of powder remaining. These are just a few of the samples that have been seized by law enforcement agencies, analyzed by forensic chemists and identified as containing illegally-distributed sildenafil, the active ingredient in Viagra.

The Column

In the wake of the recent dioxin poisoning scare in Europe that sparked import bans on some German farm products, GC-MS is emerging as the perfect analytical tool for forensic analysis.

Trimega Laboratories has opened a new lab in Manchester, UK that will be used to assist the government with its forensic toxicology workload in the wake of the closure of the Forensic Science Service.

Scientists at the National Police Scientific Institute in Ecully, France have been analyzing solvents trapped within crystals of cocaine hydrochloride with a static headspace-gas chromatography method. This method helps them ascertain the drug's country of origion, which can help determine the distribution chain.

Researchers at the University of Utah's (Salt Lake City) Sports Medicine Research and Testing Laboratory developed a test for testosterone and epitestosterone in urine that uses liquid chromatography with tandem mass spectrometry detection (LC-MS-MS).

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Special Issues

Illegal drug use worldwide is at an all-time high. There is a crucial need for fast and accurate analysis to positively identify suspected drugs in criminal investigations. Gas chromatography combined with time-of-flight mass spectrometry (GC–TOFMS) can be a valuable tool for drug testing in forensic crime laboratories. Method development and GC–TOFMS experimentation was conducted in cooperation with a local crime laboratory. The laboratory testing presented will illustrate highly efficient methods and data developed for crime labs that assist in the battle against illegal drugs. Many drug classes have chemical properties that present particular analytical challenges, such as poor detector response, chemical lability, or poor chromatographic peak shape. This article presents GC–TOFMS methods developed for several major drug classes and chemical functionalities. The major drugs included in the initial method development are methamphetamine, ecstasy, and heroin. Robust and accurate..