Method for detecting specified elements in lanthanum carbonate

The invention provides a method for detecting specified elements in lanthanum carbonate, and belongs to the technical field of drug analysis and detection. A lanthanum solution is added into the linear control solution, the concentration of the lanthanum solution in the linear control solution is matched with the concentration of lanthanum in the sample solution, and the linear correlation coefficient R of a specified element in the sample solution is larger than 0.99; pumping a certain amount of lanthanum solution linear blank solution matched with the matrix solution in concentration into the instrument, and stabilizing the instrument matrix; and drawing a standard curve of the sample solution by adopting an internal standard method in a helium mode to complete detection of specified elements. When the method is used for measuring V, Co, Ni, As, Se, Cd, Hg and Pb in lanthanum carbonate, the detection limit is low, the recovery rate is good, and the stability of all solutions is good within 47h. 本申请提供一种碳酸镧中指