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Xylene - Astrophysics Data System

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Last Updated: 18 September 2022

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Deep-UV Broadband Cavity-Enhanced Absorption Spectroscopy: application to sensitive real-time detection of the aromatic pollutants Benzene, Toluene, and Xylene (BTX)

Benzene, toluene, and xylene are three key air pollutants released by the chemical industry. Real-time monitoring of these air pollutants can help limit emissions of these chemicals and minimize the harm they cause to human health. Here we present the first results of BTX detection using Incoherent Broadband Cavity Enhancement Spectroscopy. The 1u03c3 measurement sensitivity was estimated to be 1. 4 ppbv for benzene, 8. 7 ppbv for toluene, 8. 7 ppbv for m-xylene, and 3. 2 ppbv for p-xylene, respectively, at 60 s for benzene, 8. 7 ppbv for toluene, 8. 7 ppbv for toluene, xylene, After accounting for differences in spectral resolution, the absorption cross-sections of BTX were determined in this study with uncertainty of 10% at a resolution of 0. 74 nm and in good agreement with earlier studies. The m-xylene and p-xylene concentrations were determined under five different mixing ratios in order to demonstrate the instrument's ability to analyze complicated mixtures.

Source link: https://ui.adsabs.harvard.edu/abs/2022EGUGA..24.1409W/abstract


Efficient adsorption separation of xylene isomers on Cu-BTC@Fe 3 O 4 by appropriate activation methods

The temperature change has no effect on the pore structure, with Ethanol as an activation solvent more likely to displace the precursors remaining in Cu-BTC@Fe 3 O 4's channels than dichloromethane. The separation of xylene isomers from Cu-BTC@Fe 3 O 4 composite materials was investigated using the batch vapor-phase adsorption process and liquid-phase breakthrough experiments. Both Cu-BTC@Fe 3 O 4 and Cu-BTC@Fe 3 O 4 products have excellent adsorption capacity for m-xylene, with the values of 200. 19 mg -1 and 219. 63 mg -1, which is about 4 times higher than Cu-BTC@Fe 3 O 4. The xylene p-xylene> o-xylene sequence on Cu-BTC@Fe 3 O 4 and Cu-BTC@Fe 3 O 4 materials is m-xylene > o-xylene, and that of other materials is pX > oX.

Source link: https://ui.adsabs.harvard.edu/abs/2022JSSCh.31523466J/abstract

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions