Comprehensive method to detect nitazene analogues and xylazine in wastewater

Area of Science:

• Forensic Chemistry
• Environmental Monitoring
• Public Health

Background:

• Nitazenes are potent synthetic opioids found globally in illicit drug markets.
• Xylazine, a veterinary sedative, is increasingly detected as an adulterant in opioids.
• Monitoring low-level drug consumption necessitates sensitive analytical techniques.

Purpose of the Study:

• To validate a sensitive analytical method for detecting and quantifying nitazenes and xylazine in wastewater.
• To assess the prevalence of nitazene and xylazine use in Australia via wastewater analysis.

Main Methods:

• Solid phase extraction (SPE) for sample preparation, achieving a 1000-fold concentration factor.
• Sensitive analytical method for trace-level detection and quantification.
• Application to wastewater samples collected in Australia.

Main Results:

• Five nitazenes detected at trace levels (3-6% detection frequency).
• Xylazine detected at a higher frequency (26% of samples).
• Method successfully quantified nitazenes and xylazine in Australian wastewater.

Conclusions:

• The validated method is effective for monitoring nitazene and xylazine use in populations.
• Wastewater analysis provides an early warning system for emerging drug trends.
• Xylazine appears to be more prevalent than nitazenes in the Australian wastewater studied.