The determination of nanogram amounts of Chromium in urine by x-ray fluorescence spectroscopy
Nanogram amounts of chromium can be extracted as oxinate into chloform. By treatment of the chloroform layer 3 M hydrochloric acid, oxinates of other elements and excess of reagent are removed, leaving a chloroform solution of the chromium chelate only. This solution is concentrated and transferred to the top of a small brass rod acting as sample holder. The intensity of the X-ray fluorescence of the Cr Kα line is measured with curved crystal optics. Chromium amounts greater than 5 ng can be detected. The application of the procedure to the analysis of the chromium content of urine is demonstrated.
Citation Information
Publication Year | 1969 |
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Title | The determination of nanogram amounts of Chromium in urine by x-ray fluorescence spectroscopy |
DOI | 10.1016/S0003-2670(00)89385-X |
Authors | K. Beyermann, H. J. Rose, R.P. Christian |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Analytica Chimica Acta |
Index ID | 70011529 |
Record Source | USGS Publications Warehouse |