A chemiluminescence method for the determination of mercury(<scp>ii</scp>) ions by tuning the catalytic activity of gold nanoparticles with ethylenediamine

Wang, Meiling; Kong, Yafang; Li, Ying; Huang, Yong-Chang; Fan, Aiping

doi:10.1039/c8ay02815j

Cited by 12 publications

(7 citation statements)

References 47 publications

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“…Although several of them are sensitive methods, they suffer from shortcomings such as multistep synthesis, use of toxic organic solvents during fluorimetric studies, low specificity in detection, and so forth. Surprisingly, however, the majority of them could detect only inorganic mer- cury, [20][21][22][23][24][25][26][27][31][32][33]35,36 and a limited number of existing protocols can selectively recognize organic mercury. [28][29][30]34 Recently, graphene-based materials such as graphene oxide (GO) and reduced GO (rGO), a single atomic layer of sp 2 hybridized carbon atoms arranged in a honeycomb lattice, have received enormous recent attention because of their unique properties such as large surface area, superior mechanical properties, exceptional electronic and optical properties, and thermal stability.…”

Section: Introductionmentioning

confidence: 99%

“…Notable shortcomings of these methods are the necessity of sophisticated instruments, the involvement of trained personnel, longer data acquisition time, and so forth. Alternative approaches based on fluorimetric, − colorimetric, − and electrochemical , methods have been developed for Hg(II) detection. Although several of them are sensitive methods, they suffer from shortcomings such as multistep synthesis, use of toxic organic solvents during fluorimetric studies, low specificity in detection, and so forth.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reduced Graphene Oxide–Thioguanine Composites for the Selective Detection of Inorganic and Organic Mercury in Aqueous Media

Hiremath

Maiti

Ghosh

et al. 2020

ACS Appl. Nano Mater.

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Graphene oxide (GO) and its reduced form reduced GO (rGO) have received huge research attention because of their unique surface properties and diverse application potential. Here, a rGO-based turn-on fluorimetric sensing platform for the label-free detection and subsequent discrimination of inorganic and organic mercurials was developed by utilizing the inherent fluorescence property of rGO. 6-Thioguanine (6-TG) was used as a fluorescence quencher, and the corresponding nonfluorescent rGO−6-TG ensemble was utilized to detect Hg(II) ions by an affinity-based complexation and decomplexation phenomenon. The rGO−6-TG ensemble interacts with Hg(II) ions with high selectivity owing to the strong affinity of Hg(II) toward the thiol group of 6-TG to result in a strong blue fluorescence. Limits of detection of inorganic and organic mercury were determined as 0.8 and 1.72 μM, respectively. Discrimination of inorganic mercury from organic mercury was achieved by simple introduction of iodide ions, which immediately drive inorganic Hg(II) out of the solution (from the rGO−6-TG−Hg−6-TG complex) by forming HgI 2 (K sp > 10 −29 ). The rGO−6-TG−Hg−6-TG ensemble was successfully utilized for the detection of iodide ions making it a dual sensor for Hg(II) and I − . Simple, noncovalent modification and ability to discriminate organic mercury from inorganic mercury are few key features of this rGO-based sensing platform.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reduced Graphene Oxide–Thioguanine Composites for the Selective Detection of Inorganic and Organic Mercury in Aqueous Media

Hiremath

Maiti

Ghosh

et al. 2020

ACS Appl. Nano Mater.

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“…CL-based detection of Hg 2+ was also reported by Lu and co-workers by utilizing the thymine-Hg 2+ -thymine chemistry . Other approaches to detect ions, including Fe 2+ , Pb 2+ , Co 2+ , Hg 2+ , Cu 2+ , F – , and so on, were also reported. − While each method has its own merits, a systematic platform for the detection of ions with CL remains lacking. Moreover, given the chemical complexity of certain real samples, the selectivity of the methods remains a great challenge.…”

mentioning

confidence: 90%

Chemiluminescent Ion Sensing Platform Based on Ionophores

2019

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We report here an ionophore-based chemiluminescent platform for the selective detection of ions. This method functions on the basis of the ion-exchange between the target ion and the divalent organic cation lucigenin, which luminesces after reacting with hydrogen peroxide in alkaline conditions. Using the K+ ionophore valinomycin, chemiluminescent detection of K+ (from 10 nM to 1 M) was performed on both dichloromethane solutions and polymeric films. While the ionophores ensured excellent selectivity, the detection range could be adjusted with the ratio between the aqueous and the organic phases, and the divalent lucigenin ions also made the sensitivity for divalent target ions higher than conventional ionophore-based ion-selective optodes. The generalizability of the method was shown by changing the K+ ionophore into a Pb2+ ionophore, which successfully realized the highly selective detection of Pb2+ from 0.1 nM to 0.1 mM. Preliminary application of the method was demonstrated with the determination of K+ in diluted human blood serum (five samples), and the results agreed well with those obtained from potentiometric ion-selective electrodes.

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“…Toxic metal ions and organic pollutants released in environmental water could cause tremendous adverse effects on the environment and human health; , for example, intake of Fe 3+ , Cu 2+ , Ag + , Cd 2+ , and anilines might cause Parkinson’s, pancreas, liver, heart, and Alzheimer’s diseases, , organ failure, cell toxicity, and certain cancers. , However, most of the current detection and capture methods (i.e., micro-solid phase extraction, atomic absorption spectrometry, chemiluminescence techniques, inductively coupled plasma mass spectrometry (ICP-MS), fiber-optical chemosensing method, electrochemical method, , high-performance liquid chromatography (HPLC), and gas chromatography (GC)) require complicated sample pretreatment processes, sophisticated instrumentation, high cost, and long analytical processing time in a credited laboratory. − In recent years, luminescent lanthanide-metal–organic frameworks (Ln-MOFs), which showcase a ratiometric “turn-up” or “turn-down” fluorescence response depending on the energy transfer efficiency through host–guest interactions, have received much attention and demonstrated important advantages, such as improved rapidity, operability, and sensitivity. − …”

Section: Introductionmentioning

confidence: 99%

Metal–Organic Framework–Plant Nanobiohybrids as Living Sensors for On-Site Environmental Pollutant Detection

Liang

Zulkifli

Low‐Choy

et al. 2020

Environ. Sci. Technol.

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Photoluminescent metal–organic frameworks (MOFs) were grown in a living plant (Syngonium podophyllum) via immersing their roots in an aqueous solution of disodium terephthalate and terbium chloride hexahydrate sequentially for 12 h without affecting their viability. Then, app-assisted living MOF–plant nanobiohybrids were used for the detection of various toxic metal ions and organic pollutants. Their performance and sensing mechanism were also evaluated. The results demonstrated that the living plants served as self-powered preconcentrators via their passive fluid transport systems and accumulated the pollutants around the embedded MOFs, resulting in relative changes in fluorescence intensity. Therefore, the living MOF–plant nanobiohybrids initiate superior selectivity and sensitivity (0.05–0.5 μM) in water for Ag+, Cd2+, and aniline with a “turn-up” fluorescence response and for Fe3+ and Cu2+ with “turn-down” fluorescence response in the linear range of 0.05–10 μM with excellent precision and accuracy of 5 and 10%, respectively. With the easy-to-read visual signals under ultraviolet light, the app translates plant luminescent signals into digital information on a smartphone for on-site monitoring of environmental pollutants with high sensitivity and specificity. These results suggest that interfacing synthetic and living materials may contribute to the development of smart sensors for on-site environmental pollutant sensing with high accuracy.

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A chemiluminescence method for the determination of mercury(ii) ions by tuning the catalytic activity of gold nanoparticles with ethylenediamine

Abstract: A turn-on and an ultrasensitive chemiluminescence detection method for mercuric ions was developed.

Cited by 12 publications

References 47 publications

Reduced Graphene Oxide–Thioguanine Composites for the Selective Detection of Inorganic and Organic Mercury in Aqueous Media

Reduced Graphene Oxide–Thioguanine Composites for the Selective Detection of Inorganic and Organic Mercury in Aqueous Media

Chemiluminescent Ion Sensing Platform Based on Ionophores

Metal–Organic Framework–Plant Nanobiohybrids as Living Sensors for On-Site Environmental Pollutant Detection

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