Kvasny Prum. 1986; 32(12): 312-316 | DOI: 10.18832/kp1986081

Cyanide determination in stone distillates.Peer-reviewed article

L. PROCHÁZKA, J. POLAKOVIČOVÁ, J. POLAKOVIČ, F. OPEKAR

For the cyanide determination in stone distillates the following methods were used: the balance potentiometry, the direct potentiometry with an ion selective electrode and spectrophotometry. For an evaluation the following methods were used: The method of a calibration curve, the method of a standard addition and the Gran method. It was found that all cyanides in distillates are present in a free form (their quantity after a remained unchanged. The cyanide quantity was in all the samples below 20 mg . l^-1. The raw distillates contain a higher quantity of cyanides in distillates of a various kinds depends on the kind of a fruit, a procedure of its treatment, a course of fermentation and distillation. Each change produced has to be analyzed separately. Electrochemical methods are suitable for the cyanide determination especially due to their simplicity, rapidity and accuracy for production scale laboratories.
(In Czech, English summary only)

Keywords: distillate, cyanide, determination

Published: December 1, 1986