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USGS · 70011529

The determination of nanogram amounts of Chromium in urine by x-ray fluorescence spectroscopy

K. Beyermann·H. J. Rose·R.P. Christian
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Abstract

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.

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K. Beyermann, H. J. Rose, R.P. Christian. 1969. The determination of nanogram amounts of Chromium in urine by x-ray fluorescence spectroscopy. https://doi.org/10.1016/s0003-2670(00)89385-x

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