Abstract
The Nd contents of bastonaesite concentrates were determined by photoacoustic spectrometry without dissolution or separation. The bastonaesite concentrates were suitably modeled with a Nd carbonate-La carbonate system. To deal with the light scattering samples, a Kubelka-Munku type calibration method was modified, and the linear relationship between Nd content and the response function was obtained up to 20%(wt/wt) of Nd. The effect of particle size was relatively small under 325 mesh. The effect of impurities on the fluorecence process was also discussed.
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