Determination of traces of titanium down to sub-part-per-million levels in molybdenum metal and compounds by ion exchange chromatography/spectrophotometry
作者： F. W. E. Strelow
DOI: 10.1021/AC00125A012
关键词:
摘要: Traces and up to 10 mg of titanium can be determined in large samples molybdenum or compounds (up g) by cation exchange chromatography with columns containing only 2 4 g AG50W-X4 resin followed determination using spectrophotometry the Tiron complex presence complexing agents. Separations are very satisfactory, leaving between 5 30 /sup +/g fraction when MoO/sub 3/ is present originally. Recoveries from synthetic mixtures quantitative ..mu..g (0.5 ppm) a standard deviation 0.2 (0.02 ppm). Relevant elution curves results for analysis some actual presented influences nitric phosphoric acid concentrations on separation discussed. In addition method avoid excessive catalytic decomposition H/sub 2/O/sub 2/, which interfere column separation.
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