Description: The AAS/Flame instrument determines the concentrations of an element in aqueous solution, by sending an atomized sample through an acetylene flame. Measurement is accomplished by observing the absorption at its characteristic wavelength. Concentrations are calculated by comparing to known standards. Metals analyzed using the Flame AAS include calcium, cesium, iron, magnesium, potassium, sodium, and zinc.
Analytical Method-AAS Flame: Our laboratory follows Standard Methods for the Examination of Water and Wastewater, 23rd Edition. Metals using the flame AAS are analyzed using 3111B direct air-acetylene flame. Samples require filtration using a 0.45µm filter, and the pH is adjusted to 2.5 using nitric acid.
The AAS/Furnace determines the concentration of an element in aqueous solution by injecting the sample onto a graphite platform. To eliminate most matrix effects, the temperature is ramped, and after rapid heating to the temperature at which the element is atomized. and the element's characteristic wavelength, the absorbance is recorded and the concentrations are calculated by comparing to the absorbance of known standards. Metals analyzed using the Graphite Furnace AAS include aluminum, antimony, arsenic, barium, beryllium, cadmium, chromium, cobalt, copper, lead, manganese, nickel, molybnum, selenium, silver, strontium, tellurium, thallium, tin, and vanadium.
Analytical Method-AAS Furnace: Our laboratory follows Standard Methods for the Examination of Water and Wastewater, 22nd Edition. Metals using the furnace AAS are analyzed using 3113B electrothermal atomic absorption spectrometric method.
Sample submission: Water samples may be submitted to the water quality laboratory chemist for analysis.
Training: Student researchers and faculty who may be interested in training on instrument operation and data interpretation, please contact the water quality laboratory to schedule training and time on the instrument. While the number of training hours may vary, depending on the student's knowledge and analytical skills, we require a minimum of four training hours prior to allowing the student to independently operate the instrument.