Chemo & Biosensors Group, Faculty of Pharmacy, University of Jember, Jember 68121, Indonesia.
Anal Chim Acta. 2009 Nov 23;655(1-2):75-9. doi: 10.1016/j.aca.2009.09.045. Epub 2009 Oct 6.
A novel chemosensor, based on tris[2-(4-phenyldiazenyl)phenylaminoethoxy]cyclotriveratrylene (TPPECTV) as chromophore, has been developed for the colorimetric determination and visual detection of Hg(II) ions. TPPECTV exhibits a pronounced chromogenic behavior toward Hg(II) ions by changing the color of the solution from yellow to red-orange upon its addition, which can be easily detected with the naked-eye. Based on this sensing scheme a colorimetric method was developed, where the absorbance linearly increases as a function of the Hg(II) concentration up to 2.0x10(-4) M, with a detection limit of 0.5 microM. The visual detection, using TPPECTV absorbed on silica, provides a simple, rapid and sensitive method and was used for the detection of Hg(II) ions in water samples with a detection limit of 5.0 microM. The colorimetric results of the detection of Hg(II) ions in environmental water samples (river water) are in good agreement with those obtained by cold vapor atomic absorption spectrometry (CVAAS).
一种基于三[2-(4-苯重氮基)苯氨基乙氧基]环三亚甲基苯（TPPECTV）作为发色团的新型化学传感器，已被开发用于比色测定和目视检测 Hg(II)离子。TPPECTV 对 Hg(II)离子表现出明显的显色行为，通过加入其溶液从黄色变为红橙色来改变溶液的颜色，可以用肉眼轻松检测到。基于这种传感方案，开发了一种比色法，其中吸光度随着 Hg(II)浓度的增加呈线性增加，直到 2.0x10(-4) M，检测限为 0.5 microM。使用吸附在硅胶上的 TPPECTV 进行的目视检测提供了一种简单、快速和灵敏的方法，并用于检测水样中的 Hg(II)离子，检测限为 5.0 microM。环境水样（河水）中 Hg(II)离子检测的比色结果与冷蒸气原子吸收光谱法（CVAAS）得到的结果吻合良好。
