Mercury speciation in seawater by liquid chromatography-inductively coupled plasma-mass spectrometry following solid phase extraction pre-concentration by using an ionic imprinted polymer based on methyl-mercury–phenobarbital interaction

Rodríguez-Reino, María Pilar; Rodríguez-Fernández, Roi; Peña‐Vázquez, Elena; Domínguez-González, Raquel; Bermejo-Barrera, Pilar; Moreda-Piñeiro, Antonio

doi:10.1016/j.chroma.2015.02.068

Cited by 44 publications

(11 citation statements)

References 39 publications

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“…Several analytical methods have been developed for mercury determination in water. Standard laboratory techniques include cold vapor atomic absorption spectroscopy (CV-AAS) [68,69], cold vapor-atomic fluorescence spectrometry (CV-AFS) [70,71] and inductively coupled plasma mass spectrometry (ICP-MS) [72,73]. These spectroscopic techniques are highly sensitive and accurate but are often impractical for environmental applications due to the high cost of analysis.…”

Section: Alerting Mercury Exposure In Artisanal Gold Mining Communitiesmentioning

confidence: 99%

Sensor-as-a-Service: Convergence of Sensor Analytic Point Solutions (SNAPS) and Pay-A-Penny-Per-Use (PAPPU) Paradigm as a Catalyst for Democratization of Healthcare in Underserved Communities

et al. 2020

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In this manuscript, we discuss relevant socioeconomic factors for developing and implementing sensor analytic point solutions (SNAPS) as point-of-care tools to serve impoverished communities. The distinct economic, environmental, cultural, and ethical paradigms that affect economically disadvantaged users add complexity to the process of technology development and deployment beyond the science and engineering issues. We begin by contextualizing the environmental burden of disease in select low-income regions around the world, including environmental hazards at work, home, and the broader community environment, where SNAPS may be helpful in the prevention and mitigation of human exposure to harmful biological vectors and chemical agents. We offer examples of SNAPS designed for economically disadvantaged users, specifically for supporting decision-making in cases of tuberculosis (TB) infection and mercury exposure. We follow-up by discussing the economic challenges that are involved in the phased implementation of diagnostic tools in low-income markets and describe a micropayment-based systems-as-a-service approach (pay-a-penny-per-use—PAPPU), which may be catalytic for the adoption of low-end, low-margin, low-research, and the development SNAPS. Finally, we provide some insights into the social and ethical considerations for the assimilation of SNAPS to improve health outcomes in marginalized communities.

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Section: Alerting Mercury Exposure In Artisanal Gold Mining Communitiesmentioning

confidence: 99%

Sensor-as-a-Service: Convergence of Sensor Analytic Point Solutions (SNAPS) and Pay-A-Penny-Per-Use (PAPPU) Paradigm as a Catalyst for Democratization of Healthcare in Underserved Communities

et al. 2020

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“…IIPs for MeHg + commonly require a trapping technique using a pre-polymerization mixture based on a ternary template/ligand/FM. The template is normally the analyte, using methylmercury chloride (MeHgCl) [26][27][28][29][30] as the ion source, although MeHgCl is a hardly soluble salt. Ligands containing sulfhydryl groups are the more suitable ligands since mercury ions have a specific affinity to sulfur, even though ligands containing N-based functional groups have been found to interact with MeHg + [24].…”

Section: Introductionmentioning

confidence: 99%

“…Ligands containing sulfhydryl groups are the more suitable ligands since mercury ions have a specific affinity to sulfur, even though ligands containing N-based functional groups have been found to interact with MeHg + [24]. 1-pyrrolidinecarbodithioic acid [26][27][28], phenobarbital [29][30][31] and methacrylic acid [26][27][28][29][30][31] have been reported in the synthesis of MeHg + IIPs such as sulfhydryl ligand, N-based ligand and FM, respectively. In the present study, sulfhydryl ligands (2-mercaptobenzimidazole and 2-mercaptobenzothiazole) are tested for first time in MeHg + IIP synthesis.…”

Section: Introductionmentioning

confidence: 99%

Rational Design of an Ion-Imprinted Polymer for Aqueous Methylmercury Sorption

et al. 2020

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Methylmercury (MeHg+) is a mercury species that is very toxic for humans, and its monitoring and sorption from environmental samples of water are a public health concern. In this work, a combination of theory and experiment was used to rationally synthesize an ion-imprinted polymer (IIP) with the aim of the extraction of MeHg+ from samples of water. Interactions among MeHg+ and possible reaction components in the pre-polymerization stage were studied by computational simulation using density functional theory. Accordingly, 2-mercaptobenzimidazole (MBI) and 2-mercaptobenzothiazole (MBT), acrylic acid (AA) and ethanol were predicted as excellent sulfhydryl ligands, a functional monomer and porogenic solvent, respectively. Characterization studies by scanning electron microscopy (SEM) and Brunauer–Emmett–Teller (BET) revealed the obtention of porous materials with specific surface areas of 11 m2 g−1 (IIP–MBI–AA) and 5.3 m2 g−1 (IIP–MBT–AA). Under optimized conditions, the maximum adsorption capacities were 157 µg g−1 (for IIP–MBI–AA) and 457 µg g−1 (for IIP–MBT–AA). The IIP–MBT–AA was selected for further experiments and application, and the selectivity coefficients were MeHg+/Hg2+ (0.86), MeHg+/Cd2+ (260), MeHg+/Pb2+ (288) and MeHg+/Zn2+ (1510), highlighting the material’s high affinity for MeHg+. The IIP was successfully applied to the sorption of MeHg+ in river and tap water samples at environmentally relevant concentrations.

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“…In a previous work (47), the present authors synthesized a methylmercuryimprinted polymer using phenobarbital as a ligand which was applied to the determination of methylmercury in two certified reference materials of marine products after an extraction step with toluene. The polymer is versatile and can also be applied to the speciation of organic forms of mercury by HPLC-ICP-MS (48). In this study, use of a polymer for the preconcentration of waters and analysis by CV-ICP-OES was evaluated and applied to the analysis of several waste-water samples.…”

Section: Introductionmentioning

confidence: 99%

Determination of Mercury in Wastewater Using a Molecularly Imprinted Polymer as Solid Phase Extraction Sorbent and CV-ICP-OES

Rodríguez-Fernández¹,

Bermejo–Barrera²

2016

At.Spectrosc.

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Mercury speciation in seawater by liquid chromatography-inductively coupled plasma-mass spectrometry following solid phase extraction pre-concentration by using an ionic imprinted polymer based on methyl-mercury–phenobarbital interaction

Cited by 44 publications

References 39 publications

Sensor-as-a-Service: Convergence of Sensor Analytic Point Solutions (SNAPS) and Pay-A-Penny-Per-Use (PAPPU) Paradigm as a Catalyst for Democratization of Healthcare in Underserved Communities

Sensor-as-a-Service: Convergence of Sensor Analytic Point Solutions (SNAPS) and Pay-A-Penny-Per-Use (PAPPU) Paradigm as a Catalyst for Democratization of Healthcare in Underserved Communities

Rational Design of an Ion-Imprinted Polymer for Aqueous Methylmercury Sorption

Determination of Mercury in Wastewater Using a Molecularly Imprinted Polymer as Solid Phase Extraction Sorbent and CV-ICP-OES

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