GFAAS A Mature Technique for a Modest Investment

摘要

In the 1950s, L'vov pioneered the graphite furnace (GF), and in 1970, Perkin Elmer introduced the first commercial GF instrument. Instrument manufacturers continued to make improvements to fulfill the needs and wishes of researchers, and soon the GF atomic absorption (AA) spectrometer moved from the research lab to the routine analytical laboratory. From the initial experiments to commercial production to today's routine use for environmental, clinical, and geological samples, GFAAS has evolved into a dependable, sensitive methodology and the GFAA spectrometer is one of the most relied upon pieces of instrumentation in the analytical laboratory. How do you choose which of the many instruments available is best for your application? Analytical Chemistry asked Gary Rayson of New Mexico State University for help in understanding GFAAS and instrument options. Table 1, although not intended to be comprehensive, compares the features of seven currently available dedicated GFAA spectrometers.