Abstract：Accurate determination of Al, Fe, Mn and Ti in marine sediments had important significance to search for metallic mineral resources. Therefore, it was necessary to establish a fast and low-cost analysis method. 1.0 g of NaOH was added into the sample. The mixture was fused in nickel crucible at 700 ℃ for 15 min. After dissolving with 5% HNO3, 25 μg of Cd internal standard was added to overcome the influence of instrument drift. Al 396.152 nm, Fe 238.204 nm, Mn 259.373 nm and Ti 336.121 were selected as the analytical lines. The calibration curves were prepared with the certified reference materials of marine sediment in order to eliminate the influence of matrix effect. The contents of Al, Fe, Mn and Ti in marine sediment sample were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). The limits of detection for Al2O3, Fe2O3, MnO and TiO2 were 0.914, 0.096, 0.022 and 0.068 mg/g, respectively. The actual samples and certified reference materials of marine sediment were determined according to the experimental methods. The relative standard deviations (RSD, n=5) of determination results were between 0.62% and 3.7%. The determination results were consistent with the certified values.
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