A chemosensor for heavy-transition metal ions in mixed aqueous-organic media

作者：Mandal Amal Kumar; Suresh Moorthy; Suresh E; Mishra Sanjiv K; Mishra S; Das Amitava^*

来源：Sensors and Actuators B: Chemical , 2010, 145(1): 32-38.

DOI：10.1016/j.snb.2009.11.016

• Chemosensor
• Pyrazole
• Mercury
• Fluorescence quenching

A new chemosensor (L(1)) is synthesized and its spectral response was screened with most alkali, alkaline earth, transition and lanthanide metal ions in THF-water (2:3, v/v. pH 7.2, 20 mM HEPES buffer) medium. This is found to bind four different transition metal ions such as Hg(2+), Cu(2+), Ag(+) and Ni(2+) in mixed aqueous solution at pH 7.2; while binding affinity towards the Hg(2+) is found to be an order of magnitude higher as compared to other three cations mentioned. Experimental results reveal that the L(1) could be used for colorimetric detection of Hg(2+), present in the lower organism like Pseudomonas putida.

• 出版日期2010-3-4
• 单位海洋化工研究院有限公司