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Analytical and Bioanalytical Chemistry Research، جلد ۱۰، شماره ۲، صفحات ۱۴۹-۱۵۷
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عنوان انگلیسی Determination of 2,4,6-Trinitrotoluene in Soil Samples Using a Paired Emitter-Detector Diode-Based Photometer
چکیده انگلیسی مقاله Light-emitting diodes (LEDs) can be used in paired emitter-detector diodes (PEDD) optical sensors as both the light source and the detector. PEDD-based photometers provide low fabrication cost, low power consumption, ease of miniaturization, and a high signal-noise ratio response in a wide wavelength range. This paper reports on developing a cheap but efficient PEDD-based photometer. The photometer consists of a white LED as the emitter diode, an RGB LED as the detector diode (for the first time), and a multimeter for recoding the signal. The developed PEDD-based photometer was utilized for the determination of 2,4,6-trinitrotoluene (TNT) in soil samples. A Meisenheimer complex of TNT with NaOH in acetonitrile was used as a probe to monitor the presence of residual TNT in soil samples. The calibration curve in the soil sample was linear in the concentration range of 0.86 to 110 µg g-1, with a detection limit of 0.27 µg g-1 and a quantification limit of 0.81 µg g-1. Analysis of the soil samples collected from the Iran Cinema and Television Town using the developed method showed trace residual of TNT.
کلیدواژه‌های انگلیسی مقاله Paired emitter-detector diode-based photometer,Determination,Soil analysis,TNT,Point-of-use testing
نویسندگان مقاله Fatemeh Ghobadi Seresht |
Faculty of Chemistry, Bu-Ali Sina University, Hamedan 6517838695, Iran

Mazaher Ahmadi |
Faculty of Chemistry, Bu-Ali Sina University, Hamedan 6517838695, Iran

Sina Khalili |
Faculty of Chemistry, Bu-Ali Sina University, Hamedan 6517838695, Iran

Mohsen Majidi |
Faculty of Chemistry, Bu-Ali Sina University, Hamedan 6517838695, Iran

نشانی اینترنتی https://www.analchemres.org/article_161808_a87c1b1e52fcb64957d66b2a749067b9.pdf
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