A method for determination of cadmium in isolation and sheathing of cables by flame atomic absorption spectrometry was established, using dry ashing sample decomposition in dilute nitric acid medium. Through the different sample testing to isolation and sheathing of cables, the experiment indicated that this method was easy to carry out, the precision and sensitivity were high, and the selectivity was good as well. Cd(Ⅱ) had good linear relationship in the range of 0. 002 3~4. 00 μg/mL(r=0. 9990). RSD was below 4. 3% and recovery was in the ...