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Volatilization

Volatilization

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: Jun 12, 2025

Profiling Volatile Compounds in Blackcurrant Fruit using Headspace Solid-Phase Microextraction Coupled to Gas Chromatography-Mass Spectrometry

Profiling Volatile Compounds in Blackcurrant Fruit using Headspace Solid-Phase Microextraction Coupled to Gas Chromatography-Mass Spectrometry

Published on: June 9, 2021

A Low-Cost Method for Producing User-Specified Concentrations of VOCs.

D P Lewis¹, K P Schultze², E F Vandergriff¹

¹Furman University, Greenville, South Carolina 29613, United States.

Analytical Chemistry

|September 24, 2024

Summary

A new gas-phase dilution apparatus (GPDA) provides precise, user-defined concentrations of volatile organic compounds (VOCs). This flexible platform is ideal for calibrating and benchmarking advanced VOC detection technologies.

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Last Updated: Jun 12, 2025

Profiling Volatile Compounds in Blackcurrant Fruit using Headspace Solid-Phase Microextraction Coupled to Gas Chromatography-Mass Spectrometry

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Published on: June 9, 2021

Production and Measurement of Organic Particulate Matter in a Flow Tube Reactor

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Published on: December 15, 2018

Capturing Actively Produced Microbial Volatile Organic Compounds from Human-Associated Samples with Vacuum-Assisted Sorbent Extraction

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Published on: June 1, 2022

Area of Science:

Environmental Science
Analytical Chemistry
Instrument Development

Background:

Monitoring volatile organic compounds (VOCs) is crucial for human health and environmental safety.
Accurate calibration of VOC detection technologies requires reliable methods for generating specific gas concentrations.

Purpose of the Study:

To develop a simple, inexpensive, and flexible platform for producing user-specified concentrations of gas-phase analytes.
To enable fine-tuning and benchmarking of VOC detection technologies.

Main Methods:

A gas-phase dilution apparatus (GPDA) was constructed using two mass flow controllers to mix analyte and dilution gas precisely.
Benzene and toluene were detected using a custom APPI-MS configuration and a commercial photoionization detector.

Main Results:

The GPDA demonstrated linear output over a wide concentration range (1-20,000 ppbV) for benzene and toluene, with high R² values (0.9980 and 0.9988).
Output stability was confirmed with relative standard deviations (RSDs) below 2% at various concentrations (10 ppbV, 1 ppmV, 5 ppmV) over 30 minutes.

Conclusions:

The GPDA is a capable tool for generating precise and repeatable gas-phase analyte concentrations.
This apparatus facilitates the development and validation of sensitive VOC detection systems.