Determination of alizarin red S based on layered double hydroxides-improved chemiluminescence from hydrogen peroxide and luminol,Analytical Methods

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Determination of alizarin red S based on layered double hydroxides-improved chemiluminescence from hydrogen peroxide and luminol
Analytical Methods ( IF 2.7 ) Pub Date : 2017-11-01 00:00:00 , DOI: 10.1039/c7ay02405c
Feng Pan _{1,

2,

3,

4,

5} , Yilin Zhang _{1,

2,

3,

4,

5} , Zhiqin Yuan _{6,

7,

8,

9} , Chao Lu _{6,

7,

8,

9}

Affiliation

In this report, a simple chemiluminescence (CL) approach for detecting an anionic dye, alizarin red S (ARS), based on layered double hydroxides (LDHs)-improved CL from hydrogen peroxide (H₂O₂) and luminol system is proposed. The LDHs-improved H₂O₂–luminol CL is due to the adsorption of luminol dianion and peroxide anion onto the positively charged brucite-like layers and the facilitated formation of carbonate radicals, which benefits the generation of light-emitting intermediate 3-aminophthalate anions. Notably, the LDHs-improved H₂O₂–luminol CL signal is markedly restrained in the presence of ARS, which is assigned to the ARS-mediated occupation of the positively charged centres on the brucite-like layers and the inhibition of the formation of 3-aminophthalate anions. Thus, a facile CL method for ARS perception based on the suppression effect of ARS toward the LDHs-improved H₂O₂–luminol CL has been developed. This simple CL approach shows a limit of detection of 0.1 μM toward ARS and exhibits a linear response in the concentration range from 0.5 to 30 μM. In addition, the proposed method exhibits a high specificity toward ARS over other small molecules, metal ions or anions. Furthermore, the practical application of the proposed method for ARS sensing is evaluated with the dye wastewater samples.

中文翻译：

层状双氢氧化物改进的过氧化氢和鲁米诺化学发光法测定茜素红S

在该报告中，提出了一种基于层状双氢氧化物（LDHs）改进的过氧化氢（H ₂ O ₂）和鲁米诺系统的化学发光（CL）方法，用于检测阴离子染料茜素红S（ARS）。LDHs改进的H ₂ O ₂ -luminol CL归因于鲁米诺双阴离子和过氧化物阴离子在带正电的水镁石样层上的吸附以及碳酸盐基团的促进形成，这有利于发光中间体3-氨基邻苯二甲酸酯的产生阴离子。值得注意的是，LDHs改善了H ₂ O ₂–Aluminol CL信号在存在ARS时受到显着抑制，这归因于ARS介导的对水镁石样层上带正电中心的占据，并且抑制了3-氨基邻苯二甲酸酯阴离子的形成。因此，已经开发了一种基于ARS对LDHs改善的H ₂ O ₂ -luminol CL的抑制作用的ARS感知的简便CL方法。这种简单的CL方法显示出对ARS的检测极限为0.1μM，并且在0.5至30μM的浓度范围内表现出线性响应。此外，与其他小分子，金属离子或阴离子相比，所提出的方法对ARS具有很高的特异性。此外，用染料废水样品评估了所提出的用于ARS传感的方法的实际应用。

更新日期：2017-11-16

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