A Research on the Analytical Method for Determining the Trace Tungsten in RE Metal
The research on the analytical method for determining trace tungsten in RE metal had been done. Dissolving RE metal in acid solution,tungsten in RE metal was turned into tungsten trioxide,solving the difficult problem on disso lution of tungsten metal,Through the experiment about standard addition and standard deviation of tungsten, it was concluded that the accurate and precision of the analytical method used for determining trace tungsten in RE metal can meet the requirement on analytical quality of tungsten.
Summary In agreement with Tyler's statement: “If scientific progress is to be made, we must require standards that would be recognized by everybody” ( Tyler , 1974 ), this work proposes a standard method for studying uremic neuropathy: neurological and EMG evaluations may be integrated with the study of evoked tetanic activity, which would seem to be accurate in detecting good peripheral nerve functioning.