The combination of the flame furnace atomic absorption spectrometric detection with separation techniques (HPLC, GC. CE) for environmental and chemical speciation analysis.

The speciation analysis can provide information about the bonding state of the given element occured in the sample investigated and about the proportion of the concentrations of the different species of the element. The success of the element speciation analysis depends on the effectiveness of coupling of a highly sensitive element selective detector with the separation techniques having highest resolving power. Recently, two new, sensitive flame furnace atomic absorption spectrometric methods (BIFF-AAS and TSFF-AAS) were developed in the Spectrochemical Institut (ISAS, Dortmund) under direction of Prof.H.Berndt. Both methods enable to determine 17 elements with about one order of magnitude better than with conventional flame AAS techniques. The advantages of these methods: highly improved detection power, very small (2-10 m L) sample volume consumed for the analysis, the methods can be coupled relatively easily with different separation techniques. In our work the two flame furnace AAS techniques as sensitive element selective detectors are planned to couple with the most frequently used separation techniques like HPLC, GC or CE for separation and determination of organic and inorganic forms of elements.

Improvement of thermospray flame furnace (TSFF) and beam injection flame furnace (BIFF) atomic absorption spectrometric methods, and their optimising for coupling with separation techniques. The study of the effect of organic solvents on the signals obtained by the flame furnaces techniques. Developing systems enable to analyse very small volume of samples (only a few microliters). Preparation of pulseless gas-pressure pump to transport liquid samples. On-line coupling BIFF-AAS with HPLC method. Study of the applicability of different nozzles and pumps. Automatizing the system to increase the measurement rate. Development of separation and preconcentration method by means of reversed phase HPLC to preconcentrate and speciation analysis of compounds of Hg, As, Pb or Cd. The coupling the TSFF-AAS methods with gaschromatography and capillary electrophoresis. Study of different environmental and wine samples

Start of the project 2002.02.01.

End of the project 2005.12.31.

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