Multi-channel silicone rubber traps as denuders for gas–particle partitioning of aerosols from semi-volatile organic compounds

2017 ◽  
Vol 19 (5) ◽  
pp. 676-686 ◽  
Author(s):  
Vesta Kohlmeier ◽  
George C. Dragan ◽  
Erwin W. Karg ◽  
Jürgen Schnelle-Kreis ◽  
Dietmar Breuer ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Silicone Rubber ◽  
New Approach ◽  
Volatile Organic

Multi-channel silicone rubber traps represent a new approach towards gas–particle partitioning of aerosols from semi-volatile organic compounds.

Polydimethylsiloxane (silicone rubber) brooch as a personal passive air sampler for semi-volatile organic compounds

Chemosphere ◽  
2018 ◽  
Vol 208 ◽  
pp. 1002-1007 ◽  
Author(s):  
Joseph O. Okeme ◽  
Linh V. Nguyen ◽  
Maria Lorenzo ◽  
Suman Dhal ◽  
Yolanda Pico ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Silicone Rubber ◽  
Passive Air Sampler ◽  
Air Sampler ◽  
Volatile Organic

A new approach to determine vapour pressures and hygroscopicities of aqueous aerosols containing semi-volatile organic compounds

2014 ◽  
Vol 16 (7) ◽  
pp. 3162 ◽  
Author(s):  
C. Cai ◽  
D. J. Stewart ◽  
T. C. Preston ◽  
J. S. Walker ◽  
Y.-H. Zhang ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
New Approach ◽  
Volatile Organic ◽  
Aqueous Aerosols

An Optoelectronic Nose:“Seeing” Smells by Means of Colorimetric Sensor Arrays

MRS Bulletin ◽  
2004 ◽  
Vol 29 (10) ◽  
pp. 720-725 ◽  
Author(s):  
Kenneth S. Suslick
Keyword(s):  
Thin Films ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Sensor Array ◽  
Full Range ◽  
Sensor Arrays ◽  
Colorimetric Sensor ◽  
New Approach ◽  
Colorimetric Sensor Array ◽  
Volatile Organic

AbstractA new approach to general sensors for odors and volatile organic compounds (VOCs) using thin films of chemically responsive dyes as a colorimetric sensor array is described. This optoelectronic “nose,” by using an array of multiple dyes whose colors change based on the full range of intermolecular interactions, provides enormous discriminatory power among odorants in a simple device that can be easily digitally imaged. High sensitivities (ppb) have been demonstrated for the detection of biologically important analytes such as amines, carboxylic acids, and thiols. By the proper choice of dyes and substrate, the array can be made essentially nonresponsive to changes in humidity.

Core-Based Intrinsic Fiber-Optic Absorption Sensor for the Detection of Volatile Organic Compounds

1995 ◽  
Vol 49 (3) ◽  
pp. 379-385 ◽  
Author(s):  
Gregory L. Klunder ◽  
Richard E. Russo
Keyword(s):  
Volatile Organic Compounds ◽  
Aqueous Solutions ◽  
Organic Compounds ◽  
Silicone Rubber ◽  
Near Infrared ◽  
Fiber Optic ◽  
Limit Of Detection ◽  
Broad Band ◽  
Near Ir ◽  
Volatile Organic

A core-based intrinsic fiber-optic absorption sensor has been developed and tested for the detection of volatile organic compounds. The distal ends of transmitting and receiving fibers are connected by a small cylindrical section of an optically clear silicone rubber. The silicone rubber acts both as a light pipe and as a selective membrane into which the analyte molecules can diffuse. The sensor has been used to detect volatile organics (trichloroethylene, 1,1-dichloroethylene, and benzene) in both aqueous solutions and in the vapor phase or headspace. Absorption spectra obtained in the near-infrared (near-IR) provide qualitative and quantitative information about the analyte. Water, which has strong broad-band absorption in the near-IR, is excluded from the spectra because of the hydrophobic properties of the silicone rubber. The rate-limiting step is shown to be the diffusion through the Nernstian boundary layer surrounding the sensor and not the diffusion through the silicone polymer. The rate of analyte diffusion into the sensor, as measured by the t90 values (the time required for the sensor to reach 90% of the equilibrium value), is 30 min for measurements in aqueous solutions and approximately 3 min for measurements made in the headspace. The limit of detection obtained with this sensor is approximately 1.1 ppm for trichloroethylene in an aqueous solution.

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