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Device for Measuring the Acidity of Airborne Contaminants

IP Title: New Techniques to Measure the Acidity of Airborne Matter Using Reflectance UV-Visible Spectrometry

Detailed Technology Description: None

Industry: Architecture/Construction

Sub Category: Construction Engineering

Application Date: May 13, 2010

Application No.: 8,557,184

Others

*Abstract

Reduces Cost and Resources Necessary for Measuring Acidity

This technique for measuring the acidity of airborne materials is faster and more cost-efficient. This technology uses a distinct technique of colorimetry to respond to the change in acidity of filter samples. Unlike existing products, there is no need for the traditional processing steps to attain the measurements with the pH method or ion chromatography technique. According to The World Health Organization, 4.6 million people die each year from causes directly attributable to air pollution; with 1.5 million of these deaths attributable to indoor air pollution. University of Florida researchers have developed this device providing a cutting-edge solution to monitoring airborne contamination.

Application

Device for measuring the acidity of airborne contaminants

Advantages

Requires no solvent processing, reducing cost and resources necessary for measuring acidity compared to the traditional pH method or ion chromatography method
Sampling time is greatly reduced, providing more rapid results expediting public awareness of environmental conditions
Provides a technique that requires no chemical processing of material, rendering an environmentally safe product that can be placed in various locations
Device has portable capabilities, increasing profit potential by allowing application in various fields and locations that may require monitoring of air quality

Technology

This new method and instrument are used to measure particle acidity. The airborne matter is collected on the filter impregnated with color indicators. The technique uses colorimetry to respond to the change in acidity of filter samples. The resulting color change is monitored with reflectance UV-Visible spectrometry. This technique eliminates the water extraction process, which are often used in conventional pH measurement method. Due to no workup process, this technique allows one to measure aerosol acidity in situ and on-line. The sampling time is enormously shorter than conventional pH method or ion chromatography method.

Related to technology 14854

*IP Issue Date: Oct 15, 2013

*IP Publication Date: Nov 4, 2010

*Principal Investigator: Name: Myoseon Jang
Department:

Country/Region: USA

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