environmental-health-2016_scientifictracks-abstracts

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October 24-25, 2016 | Valencia, Spain

International Conference on

Environmental Health & Safety

Volume 4, Issue 5 (Suppl)

Occup Med Health

ISSN:2329-6879 OMHA, an open access journal

Environmental Health 2016

October 24-25, 2016

PHOTOTHERMAL DESORPTION (PTD) OF BUCKYPAPERS (BPS) FOR VOLATILE ORGANIC

COMPOUND (VOC) SAMPLINGANDANALYSIS

Claudiu T. Lungu

, Jonghwa Oh

and

Evan L. Floyd

University of Alabama at Birmingham, USA

University of Oklahoma, USA

his study was aimed to find an efficient sorbent for use with our novel desorption technique, photothermal desorption (PTD)

which thermally desorbs an analyte by applying a pulse of light. Two types of single-walled carbon nanotubes (SWNTs), arc

discharge (AD) and high-pressure carbon monoxide (HiPco), were used to fabricate buckypapers (BPs) and they were examined

as a potential sorbent for PTD. Upon fabrication (AD BP and HiPco BP), heat treatment was administered to improve adsorption

properties. Adsorption properties, including Brunauer-Emmett-Teller (BET) surface area and pore size, of the heat-treated BPs were

characterized and then tested for PTD. Toluene was used as a representative volatile organic compound (VOC) and a photographic

grade xenon flash lamp was used for PTD. As a result, both types of BPs showed a large surface area (933 – 970 m²/g) and small mean

pore diameter (5.6 – 5.9 nm). The difference in the recovery rate between AD and HiPco BPs was statistically significant (p < .0007 –

.0256) AD BP having the higher recovery rate (0.016 – 0.431 %) at all energy levels examined (1.84 – 7.37 J), indicating that AD BP is

a viable sorbent for VOC sampling and analysis using PTD.

Claudiu T. Lungu et al., Occup Med Health Aff 2016, 4:5 (Suppl)