Abstract
The analytical applicability of a turbulent voltammetric cell in a flowing stream has been studied. A silicone rubber-based graphite electrode is used. Under optimal conditions, the distortion of the signal in the cell as well as the fluctuations of the signal cause a relative standard deviation of 1% in the results. An examination of the amino acids which occur in protein hydrolyzates is reported. Proline, histidine and arginine can be determined with standard deviations of about 4%; the standard deviations range from 10% to 16% for the other amino acids, except threonine, serine and tyrosine which cannot be determined.
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