Solid-phase extraction of Zn(II), Cu(II), Ni(II) and Pb(II) on poly(vinyl chloride) modified with 3-ferrocenyl-3-hydroxydithioacrylic acid, and their subsequent determination by electrothermal atomic absorption spectrometry

Kiptoo, Jackson K.; Ngila, Jane Catherine; Silavwe, Ned D.

doi:10.1007/s00604-007-0831-y

Cited by 28 publications

(14 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, the adsorption of heavy metals into solutions on natural adsorbents has a to been a considerably developed through several research works, thanks to their metal recovery efficiencies and the saving of equipment [1][2][3][4][5][6][7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Study and Mathematical Modeling of Adsorption of Co2+ ions on Biopolymers based of Sugarcane Bagasse

Elanza¹,

Taouil²,

Doubi³

et al. 2017

Orient. J. Chem

View full text Add to dashboard Cite

The main objective of this work is to study the thermodynamic and mathematical modeling of the adsorption of Co 2+ ions on biopolymers based of sugarcane bagasse (SCB) for to approximately the nature of the adsorption. The together of results obtained show that the adsorption process is favorable for a chemisorption and monolayer. Also, the adsorption process is expressed by the second order kinetic law. Thus the negative values of ΔG° and the positive values of ΔH°o pt for an endothermic and spontaneous process. Also, the positive values of ΔS° indicate the increase in the randomness at the solid / liquid interface during the adsorption of the Co 2+ metal ions.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermodynamic Study and Mathematical Modeling of Adsorption of Co2+ ions on Biopolymers based of Sugarcane Bagasse

Elanza¹,

Taouil²,

Doubi³

et al. 2017

Orient. J. Chem

View full text Add to dashboard Cite

show abstract

“…A variety of techniques including flame atomic absorption spectrometry (Detcheva and Grobecker, 2008), electrothermal atomic absorption spectrometry (Kiptoo et al, 2008), inductively coupled plasma optical emission spectrometry (Zhu and Alexandratos, 2007), inductively coupled plasma mass spectroscopy (Huang and Hu, 2008) and stripping voltammetry (Zejli et al, 2007) have been extensively used for the determination of heavy metals in different environmental and biological samples. Direct determination of trace amounts of metal ions in samples by FAAS is difficult because of low sensitivity especially of FAAS.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of silver and other heavy metals in aquatic environment receiving wastewater from industrial area, applying an enrichment method

Naeemullah

Kazi

Afridi

et al. 2016

Arabian Journal of Chemistry

View full text Add to dashboard Cite

In the present study, silver (Ag), cadmium (Cd), nickel (Ni), cobalt (Co) and lead (Pb) were simultaneously determined in water samples of fresh water canal receiving untreated effluents from an industrial area, of Sindh Pakistan. The analytes in the water sample were determined by CPE using ammonium pyrrolidinedithiocarbamate (APDC) as a complexing agent and then entrapped in non-ionic surfactant, octylphenoxypolyethoxyethanol (Triton X-114). The surfactant rich phase was diluted with acidic ethanol prior to analysis by flame atomic absorption spectrometry. The variables affecting the complexation and extraction steps such as pH of sample solution, concentration of oxine and Triton X-114, equilibration temperature and time period for shaking were investigated in detail. The validation of the procedure was carried out by analysis of a certified reference sample of water (CRM1634e). Reliability of the proposed method was also checked by the standard addition method in a real sample at three concentration levels of all metals. Under the optimum conditions, the preconcentration of 10 mL sample solutions, allowed preconcentration

show abstract

“…Current methods of separation such as chemical precipitation (Massoumi, andHedrick, 1969), electrodeposition (Ruotolo andGubulin, 2002), cementation (Chang et al, 2007), ultra-filtration (Hong et al, 1998), ion exchange (Shao et al, 1991), activated carbon adsorption (Wilson et al, 2006), liquid-liquid extraction (Sarma and Reddy, 2002;Maruyama et al, 2007) and solidphase extraction (SPE) (Hennion, 1999) are less selective. Where Ni(II) ions occur at low concentrations, there is a problem of interference from closely-related ions (Pourreza et al, 2006;Kiptoo et al, 2007). However, it has been our observation that most ion-imprinting studies do not report optimisation studies, most likely because of their long, tedious and time-consuming nature.…”

Section: Introductionmentioning

confidence: 99%

Optimal synthesis of a Ni(II)-dimethylglyoxime ion-imprinted polymer for the enrichment of Ni(II) ions in water, soil and mine tailing samples

Rammika¹,

Darko²,

Torto³

2012

WSA

View full text Add to dashboard Cite

A Ni(II)-dimethylglyoxime ion-imprinted polymer {Ni(II)-DMG IIP} was optimised by the uniform design experimental method and used to adsorb Ni(II) ions from water, soil and mine tailing samples. This aimed to improve the performance of this ion-imprinted polymer in trapping Ni(II) ions from soil and mine tailing samples which are characterised by complex matrices. The optimisation was carried out by varying the molar ratios of monomer to crosslinker to porogen and template to ligands, as well as by keeping these parameters constant and varying the concentrations of initiator, 2,2'-azobisisobutyronitrile (AIBN). The optimal molar ratios of crosslinker to monomer, monomer to template and nickel(II) sulphate hexahydrate (NiSO 4 .6H 2 O) to 4-vinylpyridine to dimethylglyoxime were found to be 3.3:1.0, 0.6:1.0 and 1.0:0.6:3.6, respectively, with 30 mg and 8 mℓ as the optimum amounts of initiator and porogen, respectively. Through this optimisation, extraction efficiency for Ni(II) increased from 98 to 100% in aqueous samples. The extraction efficiencies for the soil and mine tailing samples were 98-99% and 99%, respectively, with an enrichment factor of 2 in mine tailing samples and ranging from 27 to 40 in soil samples. The method displayed good accuracy, as it was validated with certified reference materials (SEP-3 and BCR-142R) and the values obtained were close to the certified ones. The improved quality of results obtained from water, soil and mine tailing samples showed that the uniform design experimental method is effective and efficient for optimising imprinted polymers using a lower number of experiments performed.

show abstract

Solid-phase extraction of Zn(II), Cu(II), Ni(II) and Pb(II) on poly(vinyl chloride) modified with 3-ferrocenyl-3-hydroxydithioacrylic acid, and their subsequent determination by electrothermal atomic absorption spectrometry

Cited by 28 publications

References 27 publications

Thermodynamic Study and Mathematical Modeling of Adsorption of Co2+ ions on Biopolymers based of Sugarcane Bagasse

Thermodynamic Study and Mathematical Modeling of Adsorption of Co2+ ions on Biopolymers based of Sugarcane Bagasse

Simultaneous determination of silver and other heavy metals in aquatic environment receiving wastewater from industrial area, applying an enrichment method

Optimal synthesis of a Ni(II)-dimethylglyoxime ion-imprinted polymer for the enrichment of Ni(II) ions in water, soil and mine tailing samples

Contact Info

Product

Resources

About