Residues of tetrachloronitrobenzene on ware potatoes

✍ Scribed by A. R. Wilson; J. A. Dawson

• Book ID: 102429465
• Publisher: John Wiley and Sons
• Year: 1953
• Tongue: English
• Weight: 488 KB
• Volume: 4
• Category: Article
• ISSN: 0022-5142
• DOI: 10.1002/jsfa.2740040701

✦ Synopsis

Abstract

Polarographic determinations have been made of 2 : 3 : 5 : 6‐tetrachloro‐1‐nitrobenzene (TCNB) residues on ware potatoes treated in autumn with 10 lb./ton of 3% TCNB dust to reduce sprouting in clamp. Results indicate that after normal commercial grading and transport following 4‐5 months' storage, concentrations of TCNB on tubers are likely to be about 2 p.p.m. When the storage period is increased to 6 months, a further reduction to approximately 1 p.p.m. is probable. The original concentration applied (134 p.p.m.) is reduced mainly by handling before and after clamping, but losses by evaporation have been shown to occur during storage. Washing still further reduces residues and no TCNB at all was found in the flesh of peeled tubers.