Fluorescence Signal Analysis of Mixed Rare Earth Elements by Nonlinear Fitting Method

비선형 Fitting법에 의한 희토류 혼합물의 형광신호 분석

  • Received : 1994.12.21
  • Published : 1995.03.25


To analyze mixed rare earth elements quantitatively a nonlinear fitting method was applied to laser induced fluorescence signals. Mixed flourescence signal of two elements, Sm and Eu were resolved independently and determined the concentration of these two elements simultaneously. It was found that detection limit for each element in the mixture was sub-ppb level which was the same as that of the single element sample. Additionally it was found that lifetimes of Sm and Eu extracted from the nonlinear fitting method is the same as in the single element cases.