• español
    • English
  • Login
  • English 
    • español
    • English

UniversidaddeCádiz

Área de Biblioteca, Archivo y Publicaciones
Communities and Collections
View Item 
  •   RODIN Home
  • Institutos de Investigación
  • Instituto de Investigación en Biomoléculas INBIO
  • Artículos Científicos INBIO
  • View Item
  •   RODIN Home
  • Institutos de Investigación
  • Instituto de Investigación en Biomoléculas INBIO
  • Artículos Científicos INBIO
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Colorimetric Solid-Phase Extraction Method for Cu(II) Ion Determination Using 2-Hydroxybenzaldehyde Benzoylhydrazone as Sensing Reagent

Thumbnail
Identificadores

URI: http://hdl.handle.net/10498/20408

DOI: 10.1366/13-07126

Files
2014-Colorimetric solid-phase extraction method for Cu(II) ion determination using 2-hydroxybenzaldehyde benzoylhydrazone as sensing reagent.pdf (495.5Kb)
Statistics
View statistics
Metrics and citations
 
Share
Export
Export reference to MendeleyRefworksEndNoteBibTexRIS
Metadata
Show full item record
Author/s
Espada Bellido, EstrellaAuthority UCA; Galindo Riaño, María DoloresAuthority UCA; García Vargas, Manuel; Narayanaswamy, Ramaier
Date
2014
Department
Química Analítica
Source
APPLIED SPECTROSCOPY Volume 68, Number 4, 2014
Abstract
A new sensor based on the use of 2-hydroxybenzaldehyde benzoylhydrazone as a colorimetric reagent immobilized onto styrenedivinylbenzene disks has been carried out for the determination of Cu(II) ions within several minutes. The sensor is designed on a rapid and easy two-step procedure: (1) the extraction of Cu(II) ions onto a disk loaded with the copper-selective colorimetric reagent and (2) the determination of the complexed analyte directly on the surface of the disk using diffuse reflectance measurements at 400 nm. The color of the disk changed from white to green in the presence of Cu(II) ions. The work herein details the optimization of the sensing system employing a fractional factorial design 33-1 considering three variables (pH, immobilization time, and amount of ligand immobilized onto the disk). The Pareto chart and response surfaces in a spherical domain indicated that the optimum conditions for the sensing of copper ions were pH ¼ 7, with a ligand immobilization time of 10 min and 6.25 mg of reagent loaded onto the disk. Under the optimum conditions, the analytical parameters of the proposed method were determined. The calibration graph was linear over the range of 0 to 2.5 mg L 1 of Cu(II) with a detection limit of 0.21 mg L 1. The relative standard deviation for six measurements of 1 mg L 1 of Cu(II) was found to be 4.87%. The interference from inorganic salts and other metals was found not to be of major concern when monitoring copper ions in water samples. The simplicity and rapidity of this technique make it convenient and amenable for on-site and routine analysis.
Subjects
Copper; Sensing; Colorimetric solid phase extraction; 2-Hydroxybenzaldehyde benzoylhydrazone; Diffuse reflectance spectroscopy; Green chemistry
Collections
  • Artículos Científicos [4980]
  • Artículos Científicos INBIO [269]
  • Articulos Científicos Quim. Ana. [172]
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
This work is under a Creative Commons License Attribution-NonCommercial-NoDerivatives 4.0 Internacional

Browse

All of RODINCommunities and CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

LoginRegister

Statistics

View Usage Statistics

Información adicional

AboutDeposit in RODINPoliciesGuidelinesRightsLinksStatisticsNewsFrequently Asked Questions

RODIN is available through

OpenAIREOAIsterRecolectaHispanaEuropeanaBaseDARTOATDGoogle Academic

Related links

Sherpa/RomeoDulcineaROAROpenDOARCreative CommonsORCID

RODIN está gestionado por el Área de Biblioteca, Archivo y Publicaciones de la Universidad de Cádiz

Contact informationSuggestionsUser Support