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oai:null:10339/304262026-09-02T16:57:38Zcom_10339_14934col_10339_38132

Gu, Jiyan 2011-02-16T21:42:35Z 2011-08-03T08:30:10Z 2010 https://wakespace.lib.wfu.edu/handle/10339/30426 Tungsten Coil Atomic Emission Spectrometry is an ideal technique for field applications because of its simplicity, low cost, low power requirement and independence from cooling systems. A new, portable, compact design is reported here. The tungsten coil is extracted from a 24 V, 250 W commercial projector light bulb. The coil is housed in a small, aluminum cell. The emission signal exits from a small aperture in the cell, while the bulk of the blackbody emission from the tungsten coil is blocked. The resulting spectra exhibit extremely low background signals. The atomization cell, a single lens, and a small CCD-based spectrometer are mounted on a 1 × 6 × 30 cm ceramic base. The resulting system is robust and easily transported. A 400 W solid state power supply is employed to control the current through the coil. The whole system can be powered by a car battery and controlled with a laptop computer. Fifteen elements are determined with the system (Ba, Cs, Li, Rb, Cr, Sr, Eu, Yb, Mn, Fe, Cu, Mg, V, Al and Ga). The precision ranged from 4.3% to 8.4% relative standard deviation for repetitive measurements of the same solution. Detection limits were in the μ/L range. Accuracy was tested using standard reference materials for polluted water, peach leaves and tomato leaves. en Wake Forest University atomic enviromental instrumentation pollution portable spectroscopy Portable Tungsten Coil Atomic Emission and Atomic Fluorescence Spectrometry Dissertation Jones, Bradley T Carlson, Eric D Hinze, Willie L Salam, Akbar Colyer, Christa L Chemistry 2011-08-03 open.access