Slurry sampling for direct determination of trace cadmium in amber by graphite furnace atomic absorption spectrometry
Chen, S.-z.; Lu, D.-b.
Guang Pu Xue Yu Guang Pu Fen Xi 26(10): 1928-1930
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%.