The colorimetric determination of cyanide in human food and animal feed

article
The well-known Kroller method for the determination of cyanide requires the use of the harmful chemicals benzidine (carcinogenic) and bromine (toxic) in the colorimetric part; the analytical result depends strongly on the conduct of the liberation procedure. The substitution of barbituric acid and N-chlorosuccinimide for benzidine and bromine has been investigated. The reproducibility of both colorimetric reactions is similar, but the sensitivity of the barbituric acid colorimetry is ???50% higher. A reproducible liberation yield can be obtained by a proper control of the heating programme. The detection limit for cyanide in a solution is ???10 ??g/l. ?? 1985 Springer-Verlag. Chemicals/CAS: cyanide, 57-12-5; Cyanides; Indicators and Reagents
TNO Identifier
229875
ISSN
00443026
Source
Zeitschrift für Lebensmittel-Untersuchung und -Forschung, 181(5), pp. 412-416.
Pages
412-416
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