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  • Title: Colorimetric test kit for Cu2+ detection.
    Author: Sheng R, Wang P, Gao Y, Wu Y, Liu W, Ma J, Li H, Wu S.
    Journal: Org Lett; 2008 Nov 06; 10(21):5015-8. PubMed ID: 18855402.
    Abstract:
    A coumarin-based colorimetric chemosensor 1 was designed and synthesized. It exhibits good sensitivity and selectivity for the copper cation over other cations such as Zn(2+), Cd(2+), Pb(2+), Co(2+), Fe(2+), Ni(2+), Ag(+), and alkali and alkaline earth metal cations both in aqueous solution and on paper-made test kits. The change in color is very easily observed by the naked eye in the presence of Cu(2+) cation, whereas other metal cations do not induce such a change. The quantitative detection of Cu(2+) was preliminarily examined.
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