A composable module-type cyanide microfluidic sensor based on polydimethylsiloxane membrane pervaporative sampling with sodium bicarbonate internal-pressure regulation and dual fluorescence/potentiometric monitoring

Zhang, L.; Quan, Hong-Hua; Yang, Keedong; Li, M.; Chen, C. P.; Ahn, Jae-Hoon; Hahn, Jong Hoon

doi:10.1016/j.snb.2017.12.143

Cited by 8 publications

(4 citation statements)

References 35 publications

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“…The same principle for the detection of cyanide in the presence of Gly was described recently by Zhang et al. [227]. A microfluidic sensor for monitoring environmental water using dual FD and potentiometric detection was developed.…”

Section: Naphthalene‐23‐dicarboxaldehydementioning

confidence: 97%

Homocyclic o‐dicarboxaldehydes: Derivatization reagents for sensitive analysis of amino acids and related compounds by capillary and microchip electrophoresis

Celá

Glatz

2020

Electrophoresis

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Amino acids are essential compounds for living organisms, and their determination in biological fluids is crucial for the clinical analysis and diagnosis of many diseases. However, the detection of most amino acids is hindered by the lack of a strong chromophore/fluorophore or electrochemically active group in their chemical structures. The highly sensitive determination of amino acids often requires derivatization. Capillary electrophoresis is a separation technique with excellent characteristics for the analysis of amino acids in biological fluids. Moreover, it offers the possibility of precapillary, on‐capillary, or postcapillary derivatization. Each derivatization approach has specific demands in terms of the chemistry involved in the derivatization, which is discussed in this review. The family of homocyclic o‐dicarboxaldehyde compounds, namely o‐phthalaldehyde, naphthalene‐2,3‐dicarboxaldehyde, and anthracene‐2,3‐dicarboxaldehyde, are powerful derivatization reagents for the determination of amino acids and related compounds. In the presence of suitable nucleophiles they react with the primary amino group to form both fluorescent and electroactive derivatives. Moreover, the reaction rate enables all of the derivatization approaches mentioned above. This review focuses on articles that deal with using these reagents for the derivatization of amino acids and related compounds for ultraviolet‐visible spectrometry, fluorescence, or electrochemical detection. Applications in capillary and microchip electrophoresis are summarized and discussed.

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Section: Naphthalene‐23‐dicarboxaldehydementioning

confidence: 97%

Homocyclic o‐dicarboxaldehydes: Derivatization reagents for sensitive analysis of amino acids and related compounds by capillary and microchip electrophoresis

Celá

Glatz

2020

Electrophoresis

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“…HCl and NaOH solutions are widely used in chemical analysis. In an experiment of determining cyanide by pervaporation-flow injection analysis, both NaOH and HCl solutions are need to deliver by pumps 26 . To realize miniaturized analytical system, plastic membrane based EOP is the preferred consideration.…”

Section: Analytical Sciencesmentioning

confidence: 99%

A Performance-enhanced Electroosmotic Pump with Track-etched Polycarbonate Membrane by Allylhydridopolycarbosilane Coating

et al. 2020

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Nanochannel plastic membranes are excellent materials for electroosmotic pump (EOP) elements owing to their surface charge properties, flexibility and cost-effectiveness. However, the surface charge properties of plastics are inferior to those of silicate-based materials. This paper reports a performance-enhanced EOP equipped with a glassified track-etch polycarbonate membrane (PC), which has a nanochannel surface covered by allylhydridopolycarbosilane (AHPCS). The effects of applied voltage, pH and membrane pore size on the electroosmotic flow velocity, along with comparative study of the EOP with coated and pure membranes were investigated. It was found that when low DC voltage (1040 V) was applied at both ends of the pump, the magnitude of the electroosmotic flow was linearly proportional to the voltage when the pore sizes of membrane were below 600-nm. Higher the flow rate obtained with larger pore size membrane. Compared with the uncoated film, the coated one showed faster electroosmosis velocity, with higher stability under the same conditions. For pH 10.0 buffer solution, a flow rate of 89.13 μL/min obtained in the modified membrane based EOP with excellent repeatability and durability, while the flow rate was only 37.89 μL/min in the bare PC membrane under 20 V.In order to demonstrate the performance of the developed EOP, the EOP was used to a microcomplexometric titration to determine actual tap water hardness. The measured results were considerably consistent with a conventional complexometric titration. The EOP with an AHPCS-coated plastic membrane expanded the application ranges to harsh condition solutions like high concentration acids or bases.

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“…Recent studies have focused on detecting CN-WAD using various techniques, including colorimetric [9][10][11][12], fluorometric [8], potentiometric [13], and electrochemical techniques. [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Monitoring WAD cyanide concentration in river waters with a glassy carbon electrode modified with 9,10‐Phenanthroquinone

Cardenas‐Riojas,

Calderon‐Zavaleta,

Quiroz‐Aguinaga

et al. 2023

Electroanalysis

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Heavy metal‐containing industrial effluent streams from electroplating and metalworking industries represent a major environmental issue. They contain metal cyanide complexes ([Ni(CN)4]2− and [Cu(CN)3]2−) referred to as weak acid dissociable cyanide (CN‐WAD), which require continuous in situ monitoring. In this scenario, a glassy carbon (GC) electrode superficially decorated with 9,10‐phenanthroquinone (FNQ) is manufactured and employed for the simultaneous electrochemical monitoring of cyanide WAD complexes. The interaction between GC and FNQ was characterized by Raman and electrochemical impedance spectroscopies, cyclic voltammetry, and chronocoulometry. The electrochemical evaluation was conducted by differential pulse voltammetry (DPV) and CV. The GC/FNQ electrochemical sensor simultaneously detected cyanide complexes with an average linear range of 9–93 μmol L−1, and a detection limit of 0.15±0.04 μmol L−1 and 1.2±0.6 μmol L−1 for [Ni(CN)4]2− and [Cu(CN)3]2−, respectively. The sensor demonstrated remarkable selectivity in the presence of multiple interfering species with a percentage variation range of 89.2–109.4 %. Moreover, a computational DFT study provided valuable insights into the electrode/electrolyte interface. Finally, the developed sensor was applied for the electrochemical detection of WAD cyanide in river water samples.

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A composable module-type cyanide microfluidic sensor based on polydimethylsiloxane membrane pervaporative sampling with sodium bicarbonate internal-pressure regulation and dual fluorescence/potentiometric monitoring

Cited by 8 publications

References 35 publications

Homocyclic o‐dicarboxaldehydes: Derivatization reagents for sensitive analysis of amino acids and related compounds by capillary and microchip electrophoresis

Homocyclic o‐dicarboxaldehydes: Derivatization reagents for sensitive analysis of amino acids and related compounds by capillary and microchip electrophoresis

A Performance-enhanced Electroosmotic Pump with Track-etched Polycarbonate Membrane by Allylhydridopolycarbosilane Coating

Monitoring WAD cyanide concentration in river waters with a glassy carbon electrode modified with 9,10‐Phenanthroquinone

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