UCT’s Clean Screen® THC Utilized in Multi-Matrix Cannabinoid Post-Mortem Study

Most states have their method for extraction and fractionation, or they borrow one from another state. The sample is extracted with methylene chloride, solvent exchanged into n-hexane, and concentrated to a final volume. Fractionation is performed on a small 3 to 5g. silica gel column that has been pre-rinsed with n-hexane. The aliphatic hydrocarbons are…

Marilyn J Schneider, Steven J Lehotay, and Alan R Lightfield at the US Department of Agriculture recently published a paper in the journal Analytical and Bioanalytical Chemistry.

In produce processing, water used to wash both fresh and fresh-cut produce is commonly treated with sanitizers for the purpose of controlling pathogens and minimizing microbial cross-contamination. Chlorine-based sanitizers are most commonly used for produce processing in the food industry (FAO/WHO, 2008). While chlorine’s efficacy in controlling pathogens is well recognized, one of the main concerns is the reactivity of chlorine with organic and inorganic substances to generate harmful disinfection bi-products (DBPs) and emerging DBPs of concern including haloacetonitriles, halonitromethanes, haloacetamides, and nitrosamines (NISAMs). Monitoring these DBPs is necessary to protect food safety but comprehensive analytical methods have been lacking. 

In a recent paper authored by Wan-Ning Lee et al., published in Food Chemistry (https://doi.org/10.1016/j.foodchem.2018.02.134), UCT’s Enviro-Clean® 521 sorbent (200 mg/ 6 mL) was employed to analyze DBPs and NISAMs in food wash water. 

It’s no surprise that oral fluid drug testing has gained recent popularity in forensic and clinical laboratories. Not only is it easier to acquire from a sample collection perspective, but also, it’s much less invasive when comparing the measures utilized to solicit urine and blood samples. 

Separation Science has developed its fourth online eSeminar focusing on advances in forensics and toxicology. Taking place in two sessions, one each on 28 and 30 November 2017, this two-day online educational event will provide forensic scientists, toxicologists and those who work in laboratories within the forensic and toxicology industries with updates and guidance on the latest methods, protocols, processes and applications of chromatography, mass spectrometry and related techniques with key experts providing practical insights into their respective fields.

Our very own Forensic Technical Specialist, Tina Fanning, will be presenting in conjunction with an extensive panel of additional key experts in the field. The e-Seminar will comprise 7 presentations over 2 sessions featuring UCT’s platform topic, “A Modified QuEChERS Approach for the Extraction of Common Prescription and Illicit Drugs from Liver Prior to LC/MS-MS Analysis.” Click below to register for this exciting and informative event: 

http://webinar.sepscience.com/advances-in-forensics-and-toxicology-eseminar-form