Evaluation of commercial C18 cartridges for trace elements solid phase extraction from seawater followed by inductively coupled plasma-optical emission spectrometry determination

Otero-Romaní, Jacobo; Moreda-Piñeiro, Antonio; Bermejo-Barrera, Adela; Bermejo–Barrera, Pilar

doi:10.1016/j.aca.2004.12.046

Cited by 141 publications

(59 citation statements)

References 10 publications

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“…9. The obtained LOD and LOQ are comparable with some reported studies (Ensafi et al 2003;Otero-Romani et al 2005;Huang et al 2008;Sharma and Pant 2009).…”

Section: Methods Validationsupporting

confidence: 90%

“…Numerous preconcentration and separation techniques application have been reported for metal-ion analysis, which include cloud-point extraction (CPE) (Anthemidis et al 2001(Anthemidis et al , 2002, co-precipitation (Duran et al 2009), electrochemical deposition (ECD) (Soylak and Tuzen 2008), flotation (Pan et al 2007), liquid-liquid extraction (LLE) (Candir et al 2008), solid-phase extraction (SPE) (Otero-Romani et al 2005;Elci et al 2008;Huang et al 2008;Chen et al 2009), solid-phase microextraction (SPME) (Camel 2003;Chen et al 2009), etc. However, SPE is the preferred method mainly due to its simplicity, direct application in microlitre (lL) volume, speed, minimal sample loss, higher preconcentration factor, rapid phase separation, cost and time saving (Bulut and Tez 2007;Chen et al 2009;Mohammadi et al 2011).…”

Section: Introductionmentioning

confidence: 99%

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Polyurethane composite adsorbent using solid phase extraction method for preconcentration of metal ion from aqueous solution

Olorundare

Msagati

Krause

et al. 2014

Int. J. Environ. Sci. Technol.

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Polyurethane composite adsorbent polymeric material was prepared and investigated for selected solidphase extraction for metal ions, prior to its determination by inductively coupled plasma optical emission spectrometry. The surface characterisation was done using Fourier transform infrared spectroscopy. The separation and preconcentration conditions of the analytes investigated includes influence of pH, sample loading flow rate, elution flow rate, type and concentration of eluents. The optimum pH for the highest efficient recoveries for all metal ions, which ranged from 70 to 85 %, is pH 7. The metal ions were quantitatively eluted with 5 mL of 2 mol/L HNO 3 . Common coexisting ions did not interfere with the separation. The percentage recovery of the metal ions ranged between 70 and 89 %, while the results for the limit of detection and limit of quantification ranged from 0.249 to 0.256 and 0.831 to 0.855, respectively. The experimental tests showed good preconcentration results of trace levels of metal ions using synthesised polyurethane polymer adsorbent composite.

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“…9. The obtained LOD and LOQ are comparable with some reported studies (Ensafi et al 2003;Otero-Romani et al 2005;Huang et al 2008;Sharma and Pant 2009).…”

Section: Methods Validationsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Polyurethane composite adsorbent using solid phase extraction method for preconcentration of metal ion from aqueous solution

Olorundare

Msagati

Krause

et al. 2014

Int. J. Environ. Sci. Technol.

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“…9 Although there are a number of solid-phase extraction techniques as well, [10][11][12] there are as yet no reports of an effective technique for the separation of metal chelates from a large excess of chelating reagent. In this study, a selective separation method for [V V par] in the presence of the excess chelating reagent was developed using a disposable ODS cartridge.…”

mentioning

confidence: 99%

Separation of V(V)-4-(2-pyridylazo)resorcinolato Complex from a Large Excess Reagent Using an ODS Cartridge for High-Performance Liquid Chromatography

2006

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The high-performance liquid chromatography (HPLC) of metal chelates is a powerful approach for the determination of ultratrace metal ions, providing advantages in sensitivity, toughness against coexistence matrix, and cost-effectiveness. 1A precolumn chelation HPLC system, which employs an eluent without a chelating reagent, is known as a kinetically differentiation mode (KD-)HPLC, and is both highly sensitive and selective. [1][2][3] We previously reported applications for monitoring V(V) in municipal air at ng/m 3 levels. 4,5 The high sensitivity enabled the detection of trace V(V) at natural occurrence levels in air samples 6 taken over one-day to onemonth periods.For further improvement of the sensitivity of KD-HPLC, the development of an effective preconcentration is required. That the excess chelating reagent becomes concentrated during the concentration step along with the complex has proved to be an obstacle in developing a more effective technique, since it results in poor resolution and peak deterioration in HPLC. The objective of this study is to develop an effective preconcentration method that enables selective separation of the V(V) complex with 4-(2-pyridylazo)resorcinol (PAR) from an excess of PAR in order to improve the sensitivity of KD-HPLC for V(V). We previously reported an off-line preferential preconcentration technique using solvent extraction and a onedrop concentration for the KD-HPLC of ultratrace Co(III) chelate with 2,2′-dihydroxyazobenezene (DHAB). 7,8 The excess DHAB was removed by extraction of its neutral form, and then an anionic Co(III) complex with DHAB was extracted as an ion-pair with tetrabutylammonium. This technique cannot be applied to [V V par] and PAR because both of them are mono anionic species.Solid-phase extraction has long been used for preconcentration and separation. 9 Although there are a number of solid-phase extraction techniques as well, [10][11][12] there are as yet no reports of an effective technique for the separation of metal chelates from a large excess of chelating reagent. In this study, a selective separation method for [V V par] in the presence of the excess chelating reagent was developed using a disposable ODS cartridge. The proposed method was successfully combined with an off-line preconcentration method consisting of an ionpair solid-phase extraction using another ODS cartridge and a subsequent one-drop concentration method. Its application to KD-HPLC for ultratrace V(V) has been demonstrated. A detection limit of V(V) at ppt levels was achieved. The proposed method was successfully applied to the determination of V(V) in an air-borne sample. Experimental Reagent and solutionsA commercially available PAR (Dojindo, Kumamoto, Japan) was purified by repeated precipitation from water-N,Ndimethylformamide, and then dissolving it in a slightly alkaline aqueous solution. The concentration of the PAR solution used was 1 mM. Metal ion standard solutions of Co(II), Fe(III), and A selective off-line preconcentration technique for the V(V) complex with ...

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“…[17][18][19][20] Increases in the copper concentration in water and plants have resulted from industrial and domestic waste discharge, refineries, disposal of mining washing, and the use of copper as a base compound for antifouling paints. Although many analytical methods have been developed for the determination of copper, [21][22][23][24][25] there is a lack for an in situ measurement of the free copper(II) concentration.…”

Section: +mentioning

confidence: 99%

Ion-Exchange Reaction of Silver(I) and Copper(II) in Optical Sensors Based on Thiaglutaric Diamide

Liu

Qin

2008

ANAL. SCI.

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Bulk optode membranes based on a recently reported thiaglutaric diamide ionophore were developed for measurements of silver(I) and copper(II) ions in aqueous solutions. The response properties of optical films containing ionophore and chromoionophores with different pKa values were investigated at different sample pH. At certain pH the measuring range of the optode can be shifted when choosing different chromoionophores. Optode with ionophore and chromoionophore V exhibited good responses to silver ions from 10 -6 -10 -1 M at pH 5.5. The proposed sensor showed high selectivity, good reproducibility and stability. With a different chromoionophore ETH 5418 the optode could response to copper(II) ions

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Evaluation of commercial C18 cartridges for trace elements solid phase extraction from seawater followed by inductively coupled plasma-optical emission spectrometry determination

Cited by 141 publications

References 10 publications

Polyurethane composite adsorbent using solid phase extraction method for preconcentration of metal ion from aqueous solution

Polyurethane composite adsorbent using solid phase extraction method for preconcentration of metal ion from aqueous solution

Separation of V(V)-4-(2-pyridylazo)resorcinolato Complex from a Large Excess Reagent Using an ODS Cartridge for High-Performance Liquid Chromatography

Ion-Exchange Reaction of Silver(I) and Copper(II) in Optical Sensors Based on Thiaglutaric Diamide

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