期刊
SCIENCE IN CHINA SERIES B-CHEMISTRY
卷 52, 期 6, 页码 802-808出版社
SCIENCE PRESS
DOI: 10.1007/s11426-009-0111-2
关键词
colorimetric cyanide chemosensor; indirect trick; DDTC-Na
Sodium diethyldithiocarbamate (DDTC-Na) was demonstrated to be a new colorimetric cyanide chemosensor by utilizing an indirect trick. First, some copper ions were added to the colorless aqueous solution of DDTC-Na. Then, the resultant brown solution was studied upon the addition of different anions, including Cl-, I-, IO (3) (-) , SO (4) (2-) , NO (2) (-) , Br-, H2PO (4) (-) , F-, SCN-, HSO (4) (-) , ClO (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.
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