U.S. Environmental Protection Agency, Acquisition Section (MCC-10J), 77 West Jackson, Chicago, IL 60604

66 -- ATOMIC ABSORPTION SPECTROPHOTOMETER GRAPHITE FURNACE POC Donna Stingley/(312)353-1677, Contract Specialist or William A. Massie, Jr./(312)886-5868, Contracting Officer. The EPA is seeking to purchase an Atomic Absorption spectrophotometer Graphite (Transverse) Furnace with multi-analyte capability. This instrument should be able to perform EPA method 200.9 and achieve detection limits for Sb, As Se, T1, below 1 ug/L while performing simultaneous analyses. This instrument must have the following components: a suitable sample introduction system for liquid samples, a graphite furnace capable of the rapid heating necessary for stabilized temperature platform furnace operation, a background correction system that will resolve analyte signal from background on a fast transient basis (Zeeman effect background correction is required), lamp power supplies for both hollow cathode lamps (HCLs) and electrodeless discharge lamps (EDLs), an optical system for isolating wavelengths of interest, a detector capable of processing more than one analyte signal at a time, a cooling unit to provide removal of excess heat from the furnace, a fume extraction system, when coupled with the laboratory hood, provides a safe removal of all vaporized sample matrix, analyte, and matrix modifier, and a computer, printer, and software for controlling the instrument and accessories. (242)

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