| Title: | Preoxidation for colorimetric sensor array detection of VOCs |
| Author(s): | Lin H; Jang M; Suslick KS; |
| Address: | "Department of Chemistry, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, USA" |
| ISSN/ISBN: | 1520-5126 (Electronic) 0002-7863 (Print) 0002-7863 (Linking) |
| Abstract: | "A disposable preoxidation technique that dramatically improves the detection and identification of volatile organic compounds (VOCs) by a colorimetric sensor array is reported. Passing a vapor stream through a tube packed with chromic acid on silica immediately before the colorimetric sensor array substantially increases the sensitivity to less-reactive VOCs and improves the limits of detection (LODs) ~300-fold, permitting the detection, identification, and discrimination of 20 commonly found indoor VOC pollutants at both their immediately dangerous to life or health (IDLH) and permissible exposure limit (PEL) concentrations. The LODs of these pollutants were on average 1.4% of their respective PELs" |
| Keywords: | Air Pollutants/chemistry *Colorimetry/instrumentation/methods Oxidation-Reduction Volatile Organic Compounds/*chemistry; |
| Notes: | "MedlineLin, Hengwei Jang, Minseok Suslick, Kenneth S eng U01 ES016011/ES/NIEHS NIH HHS/ U01 ES016011-04/ES/NIEHS NIH HHS/ U01ES016011/ES/NIEHS NIH HHS/ Research Support, N.I.H., Extramural 2011/10/05 J Am Chem Soc. 2011 Oct 26; 133(42):16786-9. doi: 10.1021/ja207718t. Epub 2011 Oct 3" |
