Chinese Journal of Applied Chemistry ›› 1994, Vol. 0 ›› Issue (2): 85-88.

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Determination of Trace Iron in Atmospheric Particulate Matter by Graphite Probe Filter Collection and Graphite Furnace Atomic Absorption Spectrometry

Zhang Bicheng   

  1. Department of Chemistry, Hubei University, Wuhan 430062
  • Received:1993-08-18 Revised:1993-11-05 Published:1994-04-10 Online:1994-04-10

Abstract: Trace amount of iron in atmospheric particulate matter has been directly determined by graphite probe furnace atomic absorption spectrometry after collection with a graphite probe filter.The method was accurate,sensitive,and rapid.It has a recovery of 98% and a precision of 3.0% RSD, being checked against the certified values of NBS SRM-1648 urban particulate matter. The concentration of iron and absorbance (Peak-area mode) showed an excellent linear relation in the range of 0~100ng/ml and no memory effect.The characteristic mass and detection limit of iron were 14.6pg and 24.0pg, respectively.

Key words: atomic absorption spectrometry, graphite probe, atmospheric particulate matter, trace iron