Related Experiment Video
Updated: Jan 22, 2026
09:19
Capturing Actively Produced Microbial Volatile Organic Compounds from Human-Associated Samples with Vacuum-Assisted Sorbent Extraction
Published on: June 1, 2022
4.5K
Volatile Organic Compound Emissions from Polyurethane Mattresses under Variable Environmental Conditions.
Kira Oz1, Bareket Merav1, Sabach Sara1
1Civil and Environmental Engineering, Technion , Israel Institute of Technology , Haifa 3200003 , Israel.
Environmental Science & Technology
|July 11, 2019
Summary
Sleeping microenvironment conditions significantly increase volatile organic compound (VOC) emissions from polyurethane mattresses. Elevated temperature is the primary driver, posing potential inhalation risks for infants and children.
Area of Science:
- Environmental Science
- Occupational Health
- Indoor Air Quality
Background:
- The sleeping microenvironment (SME) features elevated temperature, humidity, and CO2.
- Volatile Organic Compounds (VOCs) emitted from bedding materials are a concern due to close proximity during sleep.
- Polyurethane mattresses are common sources of VOC emissions.
Purpose of the Study:
- To investigate the impact of SME conditions on VOC emissions from polyurethane mattresses.
- To estimate inhalation exposure levels during sleep.
- To analyze the influence of mattress covers on VOC fluxes.
Main Methods:
- Eight polyurethane mattress types were tested in a parallel continuous-flow chamber system.
- VOC emissions were measured under varying temperature, humidity, and CO2 concentrations.
- Emission fluxes of 18 VOCs were quantified.
Main Results:
- VOC emissions from mattresses significantly increased under simulated sleeping conditions.
- Elevated temperature was identified as the main factor enhancing VOC emissions.
- Mattress covers were examined for their contribution to emission fluxes.
Conclusions:
- The sleeping microenvironment significantly contributes to VOC exposure, with potential risks for infants and children.
- Elevated temperature is a more significant driver of VOC emissions than humidity or CO2.
- Air exchange rate in the breathing zone critically affects a sleeping person's exposure level.
More Related Videos
Related Concept Videos
03:02Organic Compounds
56.8K
All living things are formed mostly of carbon compounds called organic compounds. The category of organic compounds includes both natural and synthetic compounds that contain carbon. Although a single, precise definition has yet to be identified by the chemistry community, most agree that a defining trait of organic molecules is the presence of carbon as the principal element, bonded to hydrogen and other carbon atoms. However, some carbon-containing compounds such as carbonates, cyanides, and...
56.8K
01:10Volatilization
5.7K
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...
5.7K
02:39Emission Spectra
75.9K
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
75.9K
01:26Variables Affecting Phosphorescence and Fluorescence
1.3K
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
1.3K
01:11Variability: Analysis
460
Measures of variability are statistical metrics that reveal the dispersion pattern within a dataset. They are pivotal in biostatistics, providing insights into the heterogeneity within health and biological data. Variability signifies the degree to which data points diverge from one another, helping researchers understand the potential range of values and associated uncertainty within the data.
The range is a simple measure of variability, indicating the difference between the highest and...
The range is a simple measure of variability, indicating the difference between the highest and...
460
01:09Random Variables
17.5K
A random variable is a single numerical value that indicates the outcome of a procedure. The concept of random variables is fundamental to the probability theory and was introduced by a Russian mathematician, Pafnuty Chebyshev, in the mid-nineteenth century.
Uppercase letters such as X or Y denote a random variable. Lowercase letters like x or y denote the value of a random variable. If X is a random variable, then X is written in words, and x is given as a number.
For example, let X = the...
Uppercase letters such as X or Y denote a random variable. Lowercase letters like x or y denote the value of a random variable. If X is a random variable, then X is written in words, and x is given as a number.
For example, let X = the...
17.5K