Efficacy of dihydroxy-mercaptopyrimidine functionalized polymeric resin for the trace determination of Cd by SPE coupled flame atomic absorption spectrometry

Islam, Aminul; Zaidi, Noushi; Ahmad, Hilal; Kumar, Sudhir

doi:10.1039/c5ra03163j

Cited by 8 publications

(2 citation statements)

References 48 publications

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“…Several analytical techniques, including atomic adsorption spectrometry (AFS), 11,12 inductively coupled plasma mass spectroscopy (ICP-MS), 13,14 and electrochemical methods, have been established for the determination of Cd 2+ . [15][16][17] Although these techniques generally provide high selectivity and sensitivity, they always require expensive and sophisticated instruments, complicated sample preparation, trained personnel, and high-cost, which limit their wide application.…”

Section: Introductionmentioning

confidence: 99%

Dithizone-etched CdTe nanoparticles-based fluorescence sensor for the off–on detection of cadmium ion in aqueous media

Liao

Ding

et al. 2017

RSC Adv.

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In the present study, a new fluorescence probe based on dithizone-etched CdTe nanoparticles was designed for the sensitive and selective detection of cadmium ions in environmental samples via a reversible off-on fluorescence mode. At first, the initial bright fluorescence of L-cysteine-capped CdTe NPs could be effectively quenched in the presence of dithizone (DZ) due to the chemical etching effect, which results from the breaking of Cd-thiol layers by DZ, thus leading to a decrease in the NPs surface passivation. Then, upon the addition of Cd 2+ , the weak fluorescence of the CdTe NPs-DZ system gradually recovered, owing to the occurrence of Cd-thiol passivation layers on the surface of the NPs.Under optimal conditions, a good linear relationship was obtained in the range from 0.4 mM to 15.4 mM for Cd 2+ , with a detection limit of 0.13 mM. In addition, this CdTe NPs-based nanosensor presents remarkable selectivity for Cd 2+ over other metal ions and was successfully applied for the detection of Cd 2+ in real water samples with satisfactory results, demonstrating its potential application for the determination of Cd 2+ in the environment.

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Section: Introductionmentioning

confidence: 99%

Dithizone-etched CdTe nanoparticles-based fluorescence sensor for the off–on detection of cadmium ion in aqueous media

Liao

Ding

et al. 2017

RSC Adv.

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“…DIIP and NIP evidence the typical stretching vibration peak FeO of at 575 cm −1 , indicating that Fe 3 O 4 nanoparticles were effectively attached over GO sheets. The stretching vibrations of metal‐nitrogen, 22 metal‐oxygen, 23 metal‐sulfur bond, 24 are reinforced by the Far IR peaks at 525, 125, and 295 cm −1 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Self‐assembly of thiourea intercalated graphene oxide based dual IIP for the SPE coupled FAAS method development of Cu(II) and Pb(II) determination

Islam,

Rais

2024

J of Applied Polymer Sci

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A new dual‐template surface imprinted polymer for Cu(II) and Pb(II) was synthesized in one pot. Magnetic graphene oxide was self‐assembled with low cost and environmentally benign thiourea. Presence of sulfur and nitrogen donor atoms provide hooks for coordination and partial reduction of graphene oxide matrix. It was used as an solid‐phase extraction adsorbent for extraction, preconcentration, and coupled with flame atomic absorption spectrometry to manifest performance comparable with inductively coupled plasma atomic emission spectrometry (ICPAES) both in terms of quantification limit as well as interference. The critical experimental parameters such as pH; 4.6, contact time of 15 min and initial concentration of 777 (Qe; 227 mg g−1) and 800 μg L−1 (Qe; 273 mg g−1) for Cu(II) and Pb(II), respectively, were optimized using RSM‐CCD and artificial neural network. The adsorption process was kinetically faster (50% adsorption in 5 min), following fractal‐like‐pseudo‐second‐order (FLPSO) kinetics and Brouers–Sotolongo isotherm model owing to the heterogenous energy landscape. The imprinting factors were in the range of 4–7 in the presence of all coexisting ions. The proposed method was robust in the determination and removal of Cu(II) and Pb(II) from food, ground water, and industry effluents with low limit of detection (Cu(II); 1.03 μg L−1 & Pb(II); 1.79 μgL−1). Spiking and recovery tests were used to assess the method's accuracy. Cu(II)/Pb(II) loaded dual template IIP (DIIP) was utilized to remove anionic dyes with >95% efficiency. Thorough examination of the method and material selectivity (in binary, ternary, and multielement system), multi fold applications of determination, removal of Cu(II), Pb(II), and removal of anionic dyes makes DIIP a promising candidate for environmental remediation.

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A graphene oxide decorated with triethylenetetramine-modified magnetite for separation of chromium species prior to their sequential speciation and determination via FAAS

et al. 2015

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Efficacy of dihydroxy-mercaptopyrimidine functionalized polymeric resin for the trace determination of Cd by SPE coupled flame atomic absorption spectrometry

Abstract: The efficacy and applicability of a cadmium extractor prepared by functionalizing polystyrene resin with 2-thiobarbituric acid is studied. This is the first time that 2-thiobarbituric acid is reported in solid phase extraction as a chelating resin.

Cited by 8 publications

References 48 publications

Dithizone-etched CdTe nanoparticles-based fluorescence sensor for the off–on detection of cadmium ion in aqueous media

Dithizone-etched CdTe nanoparticles-based fluorescence sensor for the off–on detection of cadmium ion in aqueous media

Self‐assembly of thiourea intercalated graphene oxide based dual IIP for the SPE coupled FAAS method development of Cu(II) and Pb(II) determination

A graphene oxide decorated with triethylenetetramine-modified magnetite for separation of chromium species prior to their sequential speciation and determination via FAAS

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