Spectrophotometric determination of 0-50 ng of chromium in 1 ml of human serum.
A method is described for the determination of chromium in 1 ml of human serum or plasma. It is based on a wet decomposition and a spectrophotometric determination with diphenylcarbazide after extraction with methyl isobutyl ketone. A 40-mm cuvette with less than 1 ml sample volume is described. Results are lower than expected from the literature, most samples from healthy persons containing less than 2 or 3 ng ml . The reproducibility is about 1 ng ml .
Agterdenbos
J
J
Analytisch-Chemisch Laboratorium, Rijksuniversiteit, Croesestraat 77A, Utrecht, Holland.
Van Bbroekhoven
L
L
Jütte
B A
BA
Schuring
J
J