Multivariate optimization, preconcentration and determination of mercury ions with (1-(p-acetyl phenyl)-3-(o-methyl benzoate)) triazene in aqueous samples using ICP-AES

Amiri, Nayereh; Rofouei, Mohammad Kazem; Ghasemi, Jahan B.

doi:10.1039/c5ay03169a

Cited by 15 publications

(7 citation statements)

References 40 publications

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“…10,11 This instigates the requirement of sensitive, selective, and cost-effective sensing systems for on-site detection and quantitation of mercury species, particularly methylmercury. 12,13 Conventional analytical techniques such as high-performance liquid chromatography coupled with inductively coupled plasma mass spectroscopy (ICP−MS), 14 gas chromatography coupled with ICP− MS (GC−ICP−MS), 15,16 atomic absorption spectroscopy, 17 neutron activation analysis, 18 and X-ray fluorescence spectrophotometry 19 are used for the detection of mercury ions. Notable shortcomings of these methods are the necessity of sophisticated instruments, the involvement of trained personnel, longer data acquisition time, and so forth.…”

Section: Introductionmentioning

confidence: 99%

“…Heavy metal contamination has raised huge concerns about human health and the ecosystem in recent times. , Among various heavy metals, mercury is one of the most toxic pollutants in the biosphere. , Microbes transform inorganic mercury to organic mercury, especially to methyl mercury (CH 3 HgX), , which is a potential neurotoxin that passes through the food chain to the fish, marine mammals, land animals, and humans . Methylmercury intoxication in eukaryotes accounts for prenatal brain damage, vision and hearing loss, cognitive and motion disorders, and so forth. , Owing to the potential threat and severity of mercury toward biosystems, the Environmental Protection Agency has set a very low threshold limit for mercury species. , This instigates the requirement of sensitive, selective, and cost-effective sensing systems for on-site detection and quantitation of mercury species, particularly methylmercury. , Conventional analytical techniques such as high-performance liquid chromatography coupled with inductively coupled plasma mass spectroscopy (ICP–MS), gas chromatography coupled with ICP–MS (GC–ICP–MS), , atomic absorption spectroscopy, neutron activation analysis, and X-ray fluorescence spectrophotometry are used for the detection of mercury ions. Notable shortcomings of these methods are the necessity of sophisticated instruments, the involvement of trained personnel, longer data acquisition time, and so forth.…”

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%

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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“…At present, the effective methods for determining mercury ions include atomic absorption spectroscopy, inductively coupled plasma mass spectrometry, inductively coupled plasma-atomic emission spectrometry, and so on [5,6,7]. However, to perform these with a high accuracy, these methods are time-consuming, expensive, and require professional operation.…”

Section: Introductionmentioning

confidence: 99%

Ratiometric Fluorescent Nanoprobe for Highly Sensitive Determination of Mercury Ions

Luo

Ning

et al. 2019

Molecules

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In this study, a novel dual-emission ratiometric fluorescent nanoprobe (RFN) was synthesized and ultilized for highly sensitive determination of mercury ions. In this nanoprobe, fluorescein isothiocyanate (FITC) doped silica (SiO2) served as a reference signal, FITC–SiO2 microspheres were synthesized and modified with amino groups, and then Au Nanoclusters (AuNCs) were combined with the amino groups on the surface of the FITC–SiO2 microspheres to obtain the RFN. The selectivity, stability, and pH of the RFN were then optimized, and the determination of mercury ions was performed under optimal conditions. The probe fluorescence intensity ratio (F520 nm/F680 nm) and Hg2+ concentration (1.0 × 10−10 mol/L to 1.0 × 10−8 mol/L) showed a good linear relationship, with a correlation coefficient of R2 = 0.98802 and a detection limit of 1.0 × 10−10 mol/L, respectively. The probe was used for the determination of trace mercury ion in water samples, and the recovery rate was 98.15~100.45%, suggesting a wide range of applications in monitoring pollutants, such as heavy metal ion and in the area of environmental protection.

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“…In scientific research, multiple technologies are usually combined to analyze mercury speciation and realize the three steps of purification, enrichment, and speciation analysis. With the development of hyphenated technology, mature chromatography techniques, such as GC [4], HPLC [5,6], and CE [7], and highly sensitive mercury-specific detection methods, including atomic absorption spectrometry [8,9], atomic fluorescence spectrometry (AFS) [10,11], optical emission spectrometry [12], inductively coupled plasma atomic emission spectrometry [13], and inductively coupled plasma mass spectrometry (ICP-MS) [14,15], have been applied to mercury speciation analysis. Compared with GC and CE, HPLC has been more widely used for the separation of mercury species because it provides high separation efficiency and stability without a derivatization step.…”

mentioning

confidence: 99%

Ultrasound‐assisted dual‐cloud point extraction with high‐performance liquid chromatography‐hydride generation atomic fluorescence spectrometry for mercury speciation analysis in environmental water and soil samples

Xie

Hao

Jiang

et al. 2021

J of Separation Science

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A method for simultaneous preconcentration and determination of mercury species in water and soil samples was established using high-performance liquid chromatography with hydride generation atomic fluorescence spectrometry after ultrasound-assisted dual-cloud point extraction. The extraction process was divided into two steps. In the first cloud point extraction, inorganic mercury and methylmercury formed chelates with sodium diethyldithiocarbamate and were extracted into Triton X-114 micelles. In the second stage, a displacement reaction between sodium diethyldithiocarbamate-inorganic mercury/methylmercury and l-cysteine occurred, and the analytes entered the l-cysteine aqueous solution under ultrasonication. This aqueous solution was directly introduced to the high-performance liquid chromatography with hydride generation atomic fluorescence spectrometry and the detection was completed within 6 min. Under the optimum experimental conditions, the linear range was 0.10-5.0 μg/L (r ≥0.9993) for inorganic mercury and methylmercury, and the enhancement factors were 15.7 for inorganic mercury and 6.35 for methylmercury. The limits of detection for inorganic mercury and methylmercury were 0.004 and 0.016 μg/L, respectively. The approach was successfully applied to the determination of trace inorganic mercury and methylmercury in water and soil samples with good recoveries (85.3-110%). This method solved the problem of peak fusion of the two analytes and was successfully applied to the speciation analysis of mercury.

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Multivariate optimization, preconcentration and determination of mercury ions with (1-(p-acetyl phenyl)-3-(o-methyl benzoate)) triazene in aqueous samples using ICP-AES

Abstract: Modified GO with a new triazene compound was used as an efficient adsorbent for preconcentration of Hg(ii) in water samples.

Cited by 15 publications

References 40 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

Ratiometric Fluorescent Nanoprobe for Highly Sensitive Determination of Mercury Ions

Ultrasound‐assisted dual‐cloud point extraction with high‐performance liquid chromatography‐hydride generation atomic fluorescence spectrometry for mercury speciation analysis in environmental water and soil samples

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