TY - CPAPER TI - Determination of cr (vi) in air of chrome plating plants and in urine of the workers by graphite furnace atomic absorption spectrometry PY - 1992 AU - Silva, C S AU - Oliveira, E. T2 - Rio Symposium on Atomic Spectrometry J2 - Programme and Books of Abstracts PP - Rio de Janeiro PB - Puc ER -