Surface mass spectrometry methods can be difficult to use effectively with low cost, portable mass spectrometers. This is because commercially available portable (single quadrupole) mass spectrometers lack the mass resolution to confidently differentiate between analyte and background signals. Additionally, current surface analysis methods provide no facility for chromatographic separation and ...

This study aimed to investigate a miniaturized extraction methodology with analysis by GC-MS for simultaneous detection and quantification of cocaine (COC), benzoylecgonine (BZE) cocaethylene (CE) in hair monitor drug addicts. The process was done following the international guide Scientific Task Force on Forensic Toxicology. After sample extraction, derivatizing solution added, clean-up Hollow...

Only a limited number of households in the Amazon are served by sewage collection or treatment facilities, suggesting that there might be significant emission pharmaceuticals and other wastewater contaminants into freshwater ecosystems. In this work, we performed wide-scope screening to assess occurrence pharmaceuticals, illicit drugs their metabolites ecosystems Brazilian Amazon. Our study inc...

Background: Cocaine poisoning is known for causing severe clinical effects such as tachycardia, hypertension, agitation and confusion. Absence of clinical manifestations in cocaine poisoning is unusual. Case report: A 26-year old man, known to be a cocaine addict, declared that he was forced by cocaine dealers to swallow many tablets of cocaine, six hours prior to admission to emergency departm...

Cocaine and cannabis consumption during after the 2019 Carnival holiday were assessed using wastewater-based epidemiology (WBE) in capital of Brazil, Brasília. The substances 11-nor-9-carboxy-?9-tetrahydrocannabinol (THC-COOH), cocaine (COC), benzoylecgonine (BE), cocaethylene (COE) monitored composite samples (24 h) collected entrance North-Wing (NW) South-Wing (SW) wastewater treatment plants...