DDTC-Na-based colorimetric chemosensor for the sensing of cyanide in water

• 来源期刊: 中国科学B辑（英文版）
• 年，卷（期）: 2009,（6）
• 页码范围: 802-808
• 页数: 7页
• 语种: 英文
• DOI: 10.100?/s11426-009-0111-2

摘要

Sodium diethyldithiocarbamate (DDTC-Na) was demonstrated to be a new colorimetrlc cyanide chemosensor by utilizing an indirect trick. First, some copper ions were added to the colorless aque-ous solution of DDTC-Na. Then, the resultant brown solution was studied upon the addition of different anions, including CI-, I-, IO-3, SO2-4, NO-2, Br-, H2PO--4, F-, SCN-, HSO-4, CIO-4 and CN-. It was observed by naked eyes that the brown solution changed to colorless immediately after the addition of the trace cyanide, but there were no changes towards other anions, making DDTC-Na a good selective cyanide chemosensor in pure water.