[Slurry sampling for direct determination of trace cadmium in amber by graphite furnace atomic absorption spectrometry].
A method for the direct determination of trace cadmium in amber by graphite furnace atomic absorption spectrometry (GFAAS) with slurry sampling was described. Palladium nitrate was used as a matrix modifier to eliminate the interference. Slurry stability and the influences of the matrix modifier, ashing/atomization temperature and coexistent ions on analytical signals were investigated in detail. Under the optimized experimental conditions, the detection limit of this method was 9.4 ng x g(-1) with a precision of 6.1%.
Chen
Shi-zhong
SZ
Key Laboratory, Wuhan Polytechnic University, Wuhan 430023, China.
Lu
Deng-bo
DB