Application of an Hg2+ selective imprinted polymer as a new modifying agent for the preparation of a novel highly selective and sensitive electrochemical sensor for the determination of ultratrace mercury ions

Alizadeh, Taher; Ganjali, Mohammad Reza; Zare, Mahdi

doi:10.1016/j.aca.2011.01.036

Cited by 98 publications

(48 citation statements)

References 60 publications

(60 reference statements)

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“…IIPs are often puzzled by the problem of low selectivity because many metal ions have the same charge, similar ionic radius and properties. Mercury ion (Hg 2+ ), an environmentally and toxicologically important element, being a research hotspot [17][18][19][20], also has been used as template to prepare Hg 2+ -IIPs for preconcentration of trace Hg 2+ [21][22][23]. However, the most commonly used functional monomers for HgIIPs, such as 4-VP and 3-mercaptopropyltrimethoxysilane (MPTAS), can provide coordination for many ions and thereby results in the low selectivity [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Novel Hg2+-imprinted polymers based on thymine–Hg2+–thymine interaction for highly selective preconcentration of Hg2+ in water samples

Chen

et al. 2012

Journal of Hazardous Materials

132

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Section: Introductionmentioning

confidence: 99%

Novel Hg2+-imprinted polymers based on thymine–Hg2+–thymine interaction for highly selective preconcentration of Hg2+ in water samples

Chen

et al. 2012

Journal of Hazardous Materials

132

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“…4b). The detection limit was achieved down to 0.12 nM, which is much lower than the standard values required by WHO and EPA, and those previously reported (Table S1, ESM) [33][34][35][36]. The sensitivity was improved to be 1.27 A cm -2 M -1 , *5.3-fold greater than that obtained at the electrode without modification of small AuNSs (Fig.…”

Section: Resultsmentioning

confidence: 50%

An Ultrasensitive and Selective Probe for Ratiometric Determination and Removal of Hg2+

Jin

Tian

2017

J. Anal. Test.

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New methods are desired not only to quantitatively determine but also effectively remove mercury from environmental sources, because mercury is a highly hazardous and ubiquitous pollutant with bioaccumulative properties. Herein, we developed an ultrasensitive and highly selective ratiometric electrochemical probe for accurate determination and quick removal of mercury from water. Phenyl thiourea (PT) was designed as a specific recognition element for Hg 2? , and detection was achieved by selective binding and reduction of Hg 2? on PT-functionalized electrode. Meanwhile, HS-DNA-MB (5 0 -MB-AGGAGGAGGAGGGAGGAGGG-SH-3 0 ) was designed as an inner reference element, providing a built-in correction for quantitative determination of Hg 2? . The present probe shows high sensitivity for Hg 2? detection in a broad dynamic range from 1 nM to 1.3 lM, with relatively low detection limit of 0.12 nM (0.024 ppb). This electrochemical probe was successfully applied for determination of Hg 2? in environmental water. More interestingly, it was also used to effectively remove Hg 2? from Huangpu River water within just 7 min without further separation.

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“…Mercury (Hg) is one of the most important but toxic elements in the environment due to its high reactivity, extreme volatility, and relative solubility in water and living tissues. 140,141 As is known, the toxicity of Hg depends on its chemical forms. Due to their strong lipophilic characteristics, organic Hg compounds are generally much more toxic than Hg(II), especially methylmercury (MeHg).…”

Section: Transition Elements Iipsmentioning

confidence: 99%

Current status and challenges of ion imprinting

et al. 2015

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Ion imprinting technology (IIT) aims to recognize ions while retaining the unique virtues of molecular imprinting technology (MIT), namely structure predictability, recognition specificity and application universality. Owing to special coordination or electrostatic interactions, ion imprinted polymers (IIPs) are generally compatible with aqueous media and have advantages over most molecularly imprinted polymers (MIPs). IIPs can achieve effective identification of water-soluble ions, especially heavy metals and radioactive elements that cause increasing concerns. The purpose of this review is to summarize recent advances of ion imprinting, focusing on the current status and challenges in fundamentals and applications that involve almost all types of ions and ion-related molecular imprinting. In addition, various smart strategies are highlighted, such as surface imprinting, stimuli-responsive imprinting, dual/ multiple components imprinting, click chemistry, and microwave-assisted heating. In this review, the elemental periodic table is first utilized as a template to introduce ion classification standards for various IIPs, including main groups, transition elements, actinides, rare earths, metalloids, anion imprinting and secondary imprinting. Finally, the challenges and possible solution strategies plus future trends are also proposed (302 references).

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Application of an Hg2+ selective imprinted polymer as a new modifying agent for the preparation of a novel highly selective and sensitive electrochemical sensor for the determination of ultratrace mercury ions

Cited by 98 publications

References 60 publications

Novel Hg2+-imprinted polymers based on thymine–Hg2+–thymine interaction for highly selective preconcentration of Hg2+ in water samples

Novel Hg2+-imprinted polymers based on thymine–Hg2+–thymine interaction for highly selective preconcentration of Hg2+ in water samples

An Ultrasensitive and Selective Probe for Ratiometric Determination and Removal of Hg2+

Current status and challenges of ion imprinting

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