| Title: | A colorimetric sensor array for detection of triacetone triperoxide vapor |
| 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 (Linking) |
| Abstract: | "Triacetone triperoxide (TATP), one of the most dangerous primary explosives, has emerged as an explosive of choice for terrorists in recent years. Owing to the lack of UV absorbance, fluorescence, or facile ionization, TATP is extremely difficult to detect directly. Techniques that are able to detect generally require expensive instrumentation, need extensive sample preparation, or cannot detect TATP in the gas phase. Here we report a simple and highly sensitive colorimetric sensor for the detection of TATP vapor with semiquantitative analysis from 50 ppb to 10 ppm. By using a solid acid catalyst to pretreat a gas stream, we have discovered that a colorimetric sensor array of redox sensitive dyes can detect even very low levels of TATP vapor from its acid decomposition products (e.g., H(2)O(2)) with limits of detection (LOD) below 2 ppb (i.e., <0.02% of its saturation vapor pressure). Common potential interferences (e.g., humidity, personal hygiene products, perfume, laundry supplies, volatile organic compounds, etc.) do not generate an array response, and the array can also differentiate TATP from other chemical oxidants (e.g., hydrogen peroxide, bleach, tert-butylhydroperoxide, peracetic acid)" |
| Keywords: | "Colorimetry/*methods Coloring Agents/*chemistry Heterocyclic Compounds, 1-Ring/*chemistry Limit of Detection Molecular Structure Peroxides/*chemistry Volatilization;" |
| Notes: | "MedlineLin, Hengwei Suslick, Kenneth S eng U01ES016011/ES/NIEHS NIH HHS/ Research Support, N.I.H., Extramural 2010/10/19 J Am Chem Soc. 2010 Nov 10; 132(44):15519-21. doi: 10.1021/ja107419t" |
