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Distillation: Vapor–Liquid Equilibria01:01

Distillation: Vapor–Liquid Equilibria

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Distillation is a separation technique that takes advantage of the boiling point properties of disparate elements in a mixture. To perform distillation, we begin by heating a miscible mixture of two liquids with a significant difference in boiling points (at least 20°C). As the solution heats up and reaches the bubble point of the more volatile component, some molecules of the more volatile component transition into the gas phase and travel upward into the condenser, which is a glass tube...
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The physical form of a substance changes by changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. For vaporization to occur, kinetic energy must be greater than the intermolecular forces that keep molecules bonded. The amount of energy needed to vaporize a quantity of liquid at a given pressure and a constant temperature is called the heat of vaporization. When...
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The physical form of a substance changes on changing its temperature. For example, raising the temperature of a liquid causes the liquid to vaporize (convert into vapor). The process is called vaporization—a surface phenomenon. Vaporization occurs when the thermal motion of the molecules overcome the intermolecular forces, and the molecules (at the surface) escape into the gaseous state. When a liquid vaporizes in a closed container, gas molecules cannot escape. As these gas phase...
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Volatilization gravimetry is an analytical technique that measures the mass lost due to the volatilization of the substance. This technique is used to estimate the amount of volatile material in a sample. To perform this method, heat a known amount of the sample to a high temperature in a crucible or other suitable vessel. The volatile substance in the sample evaporates, and the vapor is completely expelled from the crucible either by heating the sample or bubbling a stream of inert gas through...
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Related Experiment Video

Updated: Sep 11, 2025

A Microcontroller Operated Device for the Generation of Liquid Extracts from Conventional Cigarette Smoke and Electronic Cigarette Aerosol
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A simple, cost-effective, method for creating electronic cigarette vapor condensate.

Jennifer M Piechowski1, Brian Bagatto2

  • 1Department of Biology, Slippery Rock University, Slippery Rock, PA 16057, USA.

Biology Methods & Protocols
|August 13, 2025
PubMed
Summary

Researchers developed a cost-effective method to create electronic cigarette (e-cigarette) vapor condensate. This accessible technique yields 35 µL per 15 puffs, aiding e-cigarette exposure studies.

Keywords:
CondensateE-cigaretteElectronic cigaretteVapeVapor

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Area of Science:

  • Environmental Health
  • Toxicology
  • Analytical Chemistry

Background:

  • Standardized methods for generating electronic cigarette (e-cigarette) vapor condensate are crucial for reproducible exposure studies.
  • Existing e-cigarette condensate collection methods are often expensive, complex, or hazardous, limiting accessibility for researchers.
  • There is a need for a simple, affordable, and safe method to produce e-cigarette vapor condensate.

Purpose of the Study:

  • To develop and present a novel, cost-effective, and user-friendly method for collecting electronic cigarette (e-cigarette) vapor condensate.
  • To provide a readily available technique for researchers to obtain sufficient quantities of e-cigarette vapor for exposure studies.

Main Methods:

  • Utilized a button-activated vaping device with readily available, inexpensive supplies including a syringe, vinyl tubing, fittings, a conical tube, and ice packs.
  • Collected e-cigarette vapor condensate by passing vapor through a cooled system to induce condensation.
  • Quantified condensate yield based on the number of e-cigarette puffs.

Main Results:

  • The developed method successfully produced e-cigarette vapor condensate.
  • A consistent yield of 35 µL of condensate was obtained per 15 puffs of e-cigarette vapor.
  • The procedure was demonstrated to be cost-effective and simple to perform.

Conclusions:

  • The presented method offers a practical and affordable solution for generating e-cigarette vapor condensate.
  • This technique enhances the accessibility of e-cigarette vapor for exposure research across various institutions.
  • The ease of implementation and low cost make this method suitable for widespread adoption in the field.