Boling burner

Apparatus. A Perkin-Elmer model 303 atomic absorption spectrometer equipped with a DCR-1 readout accessory and a strip chart recorder was used for all determinations. A Boling burner was used for all determinations made in the air-acetylene flame except for copper where a single-slot, high-solids burner was used. The nitrous oxide burner was used for refractory elements. Burner and instrument settings used were those recommended by the manufacturer s handbook. 

Figure 3 Cross sections of (A) Boling burner (B) water-cooled burner head with triangular cross section (C) flat-topped burner head and (D) typical modern AA spectrometer burner head. Arrows denote air entrainment patterns...

The multislot or Boling burner gives a wide atom vapour which completely surrounds the radiation signal from the radiation source. Thus, the outer mantel of the flame protects the inner part of the flame against atmospheric air. The multislot burners are employed with the Delves-cup and boat methods (so called semiflame methods). 

Spectrophotometer Use any suitable atomic absorption spectrophotometer equipped with a Boling-type burner, an air-acetylene flame, and a hollow-cathode cadmium lamp. The instrument should be capable of operating within the sensitivity necessary for the determination. 

PE Model 303. The authors have recently found that the same concentration ranges can be covered using 10 ml. MIBK if the following instrument conditions are chang burner—Boling, lamps—shielded cathode, and scale expansion of 10 X for all three elements. 

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