Inductively Coupled Plasma-Atomic Emission Spectrometric Determination of Silicon,Aluminum,Iron and Phosphorus in Manganese Ores with Microwave Sample Digestion

A method for the determination of silicon,aluminum, iron and phosphorus in manganese ores by inductively coupled plasma-atomic emission spectrometry with microwave sample digestion has been developed.Matrix effect was eliminated using matrix-matching method and no interference between the detected elements was founded.The method has been applied to the determination of SiO2,Al2O3,Fe and P in Standard Reference Materials and real samples.The results are in good agreement with certified values and those from other methods.The recoveries of the method for these elements are 89%～112% with precision of 0.55%～3.25% RSD(n=12).Compared with the commonly used single-element analytical techniques,the proposed method has the advantages of more reliable and more efficient and is suitable to the routine inspection of manganese ores.