Related Experiment Video
Updated: Jul 20, 2026
09:25
Methods to Evaluate Cytotoxicity and Immunosuppression of Combustible Tobacco Product Preparations
Published on: January 10, 2015
Pentobarbital in tobacco
J Jabłoński1, E Jabłońska, J Moniuszko-Jakoniuk
1Department of Toxicology, Medical University of Białystok, Mickiewicza 2c, 15-222 Białystok, Poland. tokskologia@wp.pl
Summary
Pentobarbital was detected in Polish cigarette brands and raw tobacco using spectrometric analysis. Concentrations were higher in tobacco than in smoke, confirming its presence in tobacco products.
Area of Science:
- Analytical Chemistry
- Forensic Toxicology
Background:
- Pentobarbital is a barbiturate with sedative and anesthetic properties.
- The presence of pentobarbital in tobacco products is not widely documented.
Purpose of the Study:
- To determine the presence and concentration of pentobarbital in tobacco and tobacco smoke.
- To investigate potential contamination or adulteration of tobacco products.
Main Methods:
- Spectrometric analysis of chloroform extracts from tobacco and smoke.
- Utilized Perkin-Elmer Autosystem XL with a Turbo Mass spectrometer.
- Confirmed pentobarbital presence via mass spectrum analysis and retention time comparison.
Main Results:
- Pentobarbital was detected in 4 analyzed Polish cigarette brands and raw tobacco.
- Concentrations ranged from 3-6 microg/cigarette in tobacco.
- Pentobarbital levels in tobacco smoke were approximately 45% lower than in tobacco.
Conclusions:
- The presence of pentobarbital in tobacco is confirmed.
- Pentobarbital is unlikely to be synthesized during the analytical process.
- Findings suggest potential adulteration or contamination of tobacco products.
Related Concept Videos
01:20Sedatives and Hypnotics Drugs: Barbiturates
Sedatives and hypnotics encompass a drug class that acts on the central nervous system (CNS) to alleviate anxiety, promote relaxation and induce sleep.These drugs function by amplifying the actions of the neurotransmitter γ-aminobutyric acid (GABA), resulting in reduced neuronal activity. Barbiturates, a subset of sedatives and hypnotics first synthesized in the late 1800s, are categorized into ultra-short, short, intermediate, and long-acting groups based on their duration of effect. A key...
01:14CNS Depressants: Barbiturates and Benzodiazepines
CNS depressants include drugs from the category of barbiturates and benzodiazepines. They are valuable medications for managing anxiety disorders and insomnia. Barbiturates, once used to induce and maintain sleep, have been replaced mainly by benzodiazepines due to barbiturate's toxicity, tolerance, and overdose risks. They interact with GABAA receptors, leading to sedation at low doses and potentially coma and death at higher doses. Phenobarbital, a long-acting barbiturate, possesses...
01:19Phase I Reactions: Oxidation of Aliphatic and Aromatic Carbon-Containing Systems
Phase I biotransformation reactions are integral to drug metabolism, predominantly involving oxidative, reductive, and hydrolytic transformations. Chief among these are oxidative reactions, which enhance the hydrophilicity of xenobiotics and introduce polar functional groups to facilitate their elimination from the body.
Oxidation reactions are fundamental in aromatic carbon-containing systems. An example is the hydroxylation of phenobarbital, a process that transforms it into...
Oxidation reactions are fundamental in aromatic carbon-containing systems. An example is the hydroxylation of phenobarbital, a process that transforms it into...
01:27CNS Depressants: Alcohol and Nicotine
Ethanol, a clear colorless alcohol, has been consumed by humans for millennia, but its effects on the body are far from benign. At lower doses, it induces decreased inhibitions and loquaciousness, leading to its social appeal. However, it can cause severe consequences at higher doses, such as coma and respiratory depression, due to its zero-order elimination kinetics. Chronic ethanol abuse wreaks havoc on multiple organ systems, particularly the CNS and the liver. Abrupt cessation of ethanol...
01:24Parenteral Anesthetics: Overview
Intravenous anesthetics are drugs administered parenterally to induce anesthesia or sedation. Propofol is a widely used agent formulated as a 1% emulsion in soybean oil, glycerol, and egg phosphatide. It induces rapid anesthesia primarily due to its rapid distribution from the bloodstream to target tissues and is metabolized in the liver. However, it can cause significant pain on injection and hypertriglyceridemia. Fospropofol, a water-based prodrug of propofol, lacks these adverse effects.
01:23Drugs Acting on Autonomic Ganglia: Stimulants
Ganglionic stimulants activate NM nicotinic receptors in autonomic ganglia, falling into two categories: nicotine mimetics [e.g., lobeline, dimethylpiperazine, tetramethylammonium] and muscarinic receptor agonists [e.g., muscarine, methacholine]. The first category's action is rapid and blocked by nicotinic receptor antagonists, while the second category's action is delayed and blocked by atropine-like agents. Nicotine, an alkaloid, affects the heart rate by stimulating sympathetic or...