No interference was observed in the presence of 50mg/ml K+, SO42-, 10 mg/ml Na+ , Ca2 + , Mg2+ and lmg/ml Cl-.

• 水中含有50mg/ml K~+；SO_4~(2-)；10mg/ml Na~+；Ca~(2+)；Mg~(2+)；1mg/mlCl~-不影响钌的测定.