Characterization of iron-modified carbon paste electrodes and their application in As(V) detection

Toral-Sánchez, Eduardo; Rangel-Mendez, J. Rene; Cházaro-Ruiz, Luis F.

doi:10.1007/s10800-015-0903-3

Cited by 17 publications

(3 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We have confirmed this effect for As(V) determination in a sodium sulfite background electrolyte with the carbon composite electrode Au/CB/PE and used it for speciation analysis [86,119]. The As(V) signal was also obtained in the presence of Fe ions after electrolysis with carbon composite [104] or iron-modified carbon paste electrodes [120]. Several works on As(V) determination have been carried out with electrodes modified with reducing agents, including hematite (Fe 2 O 3 ) [121,122] and L-cysteine [123].…”

Section: Determination Of As(v)mentioning

confidence: 64%

Inorganic arsenic speciation by electroanalysis. From laboratory to field conditions: A mini-review

Antonova

Захарова

2016

Electrochemistry Communications

View full text Add to dashboard Cite

Section: Determination Of As(v)mentioning

confidence: 64%

Inorganic arsenic speciation by electroanalysis. From laboratory to field conditions: A mini-review

Antonova

Захарова

2016

Electrochemistry Communications

View full text Add to dashboard Cite

“…The XRD pattern of FMRS‐2 (Figure 3d) shows some small peaks at 35.4°, 45.5°, and 56.5° which is in agreement with the pattern reported for Fe(III) oxide (ferrihydrite or goethite). [ 42 ] Meanwhile, no crystalline peak was detected for manganese oxide and silica, suggesting a poorly crystalline nature of these oxide forms.…”

Section: Resultsmentioning

confidence: 99%

Removal of Arsenic from Water Using a Composite of Iron–Manganese Oxide Incorporated Active Rice Husk Silica

Bui

Pham

Thanh‐Nho

et al. 2021

CLEAN Soil Air Water

View full text Add to dashboard Cite

Low‐cost adsorbents from agricultural by‐products are intensively studied in water treatment, especially in arsenic removal for obtaining safe drinking water. Here, it is reported that a cheap and effective nano‐composite of iron–manganese oxide incorporated active rice husk silica (FMRS) for efficient removal of arsenic (As(III) and As(V)) from water, which is fabricated using a one‐pot synthesis. Fe3+ and Mn4+ in their oxides supported silica structure are successfully characterized. The FMRS (qe = 11.9 mg g−1) shows a remarkable enhancement of arsenic removal compared with the original rice husk ash (qe = 0.4 mg g−1) at initial [As(V)] = 5 mg L−1. The As(III) and As(V) adsorption are in good agreement with both Langmuir and Freundlich non‐linear isotherm models (R2 > 0.98), where the maximum adsorption capacities at pH 7 are found up to 19.1 and 20.3 mg g−1, respectively. The role of Mn4+ in enhancing the As(III) adsorption is also discussed. The FMRS exhibits high selectivity toward arsenic under the influences of other co‐existing anions in water (e.g., chloride, sulfate, and bicarbonate) and sustains a good arsenic removal efficiency during four cycles of the reusability test, suggesting a high potential of the fabricated adsorbent for long‐term removal of arsenic in field application.

show abstract

“…40 Carbonyl, phenolic, lactonic and carboxylic groups of the carbon-based materials were determined by potentiometric titrations using an automatic titrator (Mettler-Toledo T70) as described in previous reports. 41, 42 A series of 2 g/L carbon suspensions were contacted with 25 mL of neutralizing solutions. The samples were continuously stirred at 125 rpm for 5 days, then titrated with 0.1 N HCl.…”

Section: Methodsmentioning

confidence: 99%

Impact of emerging, high-production-volume graphene-based materials on the bioavailability of benzo(a)pyrene to brine shrimp and fish liver cells

Rodd

Castilho

Chaparro

et al. 2018

Environ. Sci.: Nano

Self Cite

View full text Add to dashboard Cite

With increasing commercialization of high volume, two-dimensional carbon nanomaterials comes a greater likelihood of environmental release. In aquatic environments, black carbon binds contaminants like aromatic hydrocarbons, leading to changes in their uptake, bioavailability, and toxicity. Engineered carbon nanomaterials can also adsorb pollutants onto their carbon surfaces, and nanomaterial physicochemical properties can influence this contaminant interaction. We used 2D graphene nanoplatelets and isometric carbon black nanoparticles to evaluate the influence of particle morphology and surface properties on adsorption and bioavailability of benzo(a)pyrene, a model aromatic hydrocarbon, to brine shrimp (Artemia franciscana) and a fish liver cell line (PLHC-1). Acellular adsorption studies show that while high surface area carbon black (P90) was most effective at a given concentration, 2D graphene nanoplatelets (G550) adsorbed more benzo(a)pyrene than carbon black with comparable surface area (M120). In both biological models, co-exposure to nanomaterials lead to reduced bioavailability, with G550 graphene nanoplatelets cause a greater reduction in bioavailability or response than the M120 carbon black nanoparticles. However, on a mass basis the high surface area P90 carbon black was most effective. The trends in bioavailability and adsorption were consistent across all biological and acellular studies, demonstrating the biological relevance of these results in different models of aquatic organisms. While adsorption is limited by surface area, 2D graphene nanoplatelets adsorb more benzo(a)pyrene than carbon black nanoparticles of similar surface area and charge, demonstrating that both surface area and shape play important roles in the adsorption and bioavailability of benzo(a)pyrene to carbon nanomaterials.

show abstract

Characterization of iron-modified carbon paste electrodes and their application in As(V) detection

Cited by 17 publications

References 66 publications

Inorganic arsenic speciation by electroanalysis. From laboratory to field conditions: A mini-review

Inorganic arsenic speciation by electroanalysis. From laboratory to field conditions: A mini-review

Removal of Arsenic from Water Using a Composite of Iron–Manganese Oxide Incorporated Active Rice Husk Silica

Impact of emerging, high-production-volume graphene-based materials on the bioavailability of benzo(a)pyrene to brine shrimp and fish liver cells

Contact Info

Product

Resources

About