以硝酸-高氯酸-氢氟酸混合物在酸溶弹中完全分解深海及河沉积物试样,继在溶液中以火焰原子吸收法测定镉和铅、用NBS标准试样检验,本法具有较好的回收率和重复性.对多种沉积物试样进行分析,其变异系数不大于10%;本法测定结果与烧杯溶样法测定结果进行比较,镉和铅的相对差值均小于10%. With nitric acid - perchloric acid - hydrofluoric acid mixture in the acid bomb completely decomposed deep sea and river sediment samples, followed by determination of cadmium and lead in solution by flame atomic absorption spectrometry, with NBS standard sample test, this method has Good recovery and repeatability.A variety of sediment samples were analyzed, the coefficient of variation of not more than 10%; The results of this method and the beaker solution method for the determination of the results, the relative difference between cadmium and lead were less than 10%.