A Novel Approach for the Direct Determination of 28 Analytes in a Ce Matrix Without Chemical Separation Using CCD Detector-based ICP-AES

作者：Airan Yougant; Sengupta Arijit^*; Thulasidas S K; Natarajan V

来源：Atomic Spectroscopy, 2015, 36(5): 221-235.

DOI：10.46770/as.2015.05.006

Cerium is the most abundant rare earth element, consisting of about 0.0046% of the Earth's crust by weight. Thus, there is a great chance for Ce to be present in most minerals and geological samples and hence, the possibility of interfering in the determination of other analytes in the samples. In this work, the spectral interference was studied on 28 analytes (rare earths, Ag, B, Bi, Cd, Cu, Ca, Li, Ni, Sr, Gd, Fe, Mg, Mn, Zn, Dy, Na, Co, Cr, Tl, Lu, Nd, Pr, La, Ba, Ga, In, Al, and Pb) in order to optimize the interference-free spectral line selection for each analyte from a high purity Ce matrix using a highly sensitive capacitive coupled device (CCD) detector-based ICP-AES. The method describes the direct trace level determination of these analytes without chemical separation. The correction factor (mg/L) and analytical performance were evaluated, such as sensitivity (counts/mg/L), detection limit (mg/L), linear dynamic range, precision, and tolerance level in the presence of Ce for each selected line. The results, obtained using synthetic samples prepared from a commercially available standard reference material of the individual analytes, were found in good agreement with the method proposed.

• 出版日期2015-10