135. Solving a chemistry problem

17. A sample of steel 0.0532 g was dissolved in acid, treated with diethyldithiocarbamate and the volume of the solution was brought to 100 ml. The solution was photometered at 328 and 368 nm in a cuvette with a layer thickness of 2 cm. The following results were obtained: at λ=328 nm D=0.67; at λ=368nm D=0.45. Determine the content of nickel and cobalt in steel (in%), if at 328 nm εNi=35210, εCo=3910, and at 367 nm εNi=21820, εCo=14340.