Laser-induced fluorescence determination of thallium in sediments

  title={Laser-induced fluorescence determination of thallium in sediments},
  author={Venghuot Cheam and Josef Lechner and R. Desrosiers},
  journal={Fresenius' Journal of Analytical Chemistry},
Abstract A simple dissolution procedure is decribed for sediments to be analyzed for thallium by Laser-Excited Atomic Fluorescence Spectrometry (LEAFS). It simply uses a nitric – hydrofluoric acid mixture at room temperature (a “cold dissolution” procedure as opposed to the hot acid digestion) followed by a dilution with water (as opposed to the tedious steps of separation and preconcentration). Excellent accuracy (91–106% recoveries) and precision (4–10% relative standard deviation) were… CONTINUE READING