Determination of vanadium as 4-(2-pyridylazo)resorcinol–hydrogen peroxide ternary complexes by ion-interaction reversed-phase liquid chromatography

Vachirapatama, Narumol; Dicinoski, Greg W.; Townsend, Ashley T.; Haddad, Paul R.

doi:10.1016/s0021-9673(02)00039-0

Cited by 40 publications

(27 citation statements)

References 14 publications

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“…[18,19]. HPLC with UV detection may be interesting because of the ease of the separation and the capability for the simultaneous determination of a number of metal ions, using a suitable complexing reagent [20].…”

Section: Introductionmentioning

confidence: 99%

MEKC determination of vanadium from mineral ore and crude petroleum oil samples using precapillary chelation with bis(salicylaldehyde)tetramethyl‐ethylenediimine

Mirza

Kandhro

Khuhawar³

et al. 2009

J of Separation Science

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An analytical procedure has been developed for the separation of Cu(II), Ni(II), Co(II), Fe(II), Pd(II), Th(IV), V(IV), and determination of Fe(II), Co(II), Ni(II), and V(IV) by MEKC after chelation with bis(salicylaldehyde)tetramethylethylenediimine (H(2)SA(2)Ten). Uncoated fused silica capillary was used with an applied voltage of 30 kV with photo-diode array detection at 228 nm. SDS was added as micellar medium at pH 8.2 with sodium tetraborate buffer (0.1 M). Linear calibrations were established within 0.015-1000 microg/mL of each element with LOD within 5-67 ng/mL. The method was applied for the determination of vanadium from crude oil and ore samples in the range 0.34-2.40 and 114.2-720.7 microg/g with RSD 1.7-3.8 and 0.98-2.30% (n = 3), respectively. Fe, Ni, and Co present in crude oil and ore samples were also determined with RSD 1.3-2.8, 1.1-4.1, and 1.2-3.5% (n = 3), respectively. The results were compared with that of supplier's specifications and atomic absorption spectrometry (AAS). Method was evaluated by standard addition technique.

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Section: Introductionmentioning

confidence: 99%

MEKC determination of vanadium from mineral ore and crude petroleum oil samples using precapillary chelation with bis(salicylaldehyde)tetramethyl‐ethylenediimine

Mirza

Kandhro

Khuhawar³

et al. 2009

J of Separation Science

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“…Many techniques have been used to separate the redox species of vanadium in natural waters, including capillary electrophoresis (CE) [14][15][16][17][18], reversed-phase liquid chromatography (RPLC) [19][20][21][22] (including ion-pairing (IP) RPLC), and, various forms of ion chromatography [1,3,4,14,15,[23][24][25][26]. After the species have been separated by any of these techniques, they are quantified by UV [14,17], chemiluminescence [27], ICP [28], or ICPMS [14].…”

Section: Introductionmentioning

confidence: 99%

“…Some of the ionpairing reagents used in IP-RPLC are aminopolycarboxylic acids; e.g. EDTA) [1,2,4,12,14], 1,2-cyclohexanediaminotetraacetic acid (CDTA) [3], N-2-hydroxyethylethylenediaminetetraaceatic acid (HEDTA) [23] and 4-(2-pyridylazo) resorcinol (PAR) [15,24].…”

Section: Introductionmentioning

confidence: 99%

Determination of Vanadium (IV) and (V) in Southern Nevada Groundwater by Ion Chromatography-Inductively Coupled Plasma Mass Spectrometry~!2009-12-24~!2010-02-10~!2010-05-11~!

Gamage¹,

Hodge²,

Cizdziel³

et al. 2010

TOCBMJ

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A rapid method is presented for measuring V(IV) and V(V) in groundwater, without preconcentration or complexing agents, using direct injection of the water samples (which were collected under an argon atmosphere) into an ion chromatograph-inductively coupled plasma mass spectrometer (ICPMS). The mobile phase is 1.5% v/v nitric acid, which minimizes the buildup of solids in the ultrasonic nebulizer, the torch, and on the entrance cones of the ICPMS -a problem with methods using organic complexing agents and inorganic salts. The result is much less instrument downtime for cleaning the affected parts. Limits of detection are 0.02 g L -1 for V(IV) and 0.06 g L -1 for V(V). The pentavalent form of vanadium represents 98% to 99% of the vanadium in these Southern Nevada groundwater samples and ranges from 3.7±0.1 g L -1 to 82.1±0.5 g L -1 . The remaining few percent is V(IV). Total vanadium was determined by ICPMS for a mass-balance comparison.

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“…Vanadium also has significant effects on plant growth -uptake of trace vanadium from fertiliser causing a decrease in growth and accumulation of vanadium in all parts of the plant, especially the roots [2]. The quantities of vanadium found in several fertilisers have been reported [3].…”

Section: Introductionmentioning

confidence: 99%

“…Analytical methods currently used for the determination of vanadium are atomic absorption spectrometry (AAS) [4], inductively coupled plasma-atomic emission spectrometry (ICP-AES) [5], inductively coupled plasmamass spectrometry (ICP-MS) [6], and ion-interaction reversed-phase high-performance liquid chromatography (ion-interaction RPHPLC) [2,3]. The main disadvantages of AAS, ICP-MS and ICP-AES are sample matrix interferences and high cost.…”

Section: Introductionmentioning

confidence: 99%

Separation and determination of vanadium in fertiliser by capillary electrophoresis with a light-emitting diode detector

Vachirapatama

Macka

Haddad

2002

Analytical and Bioanalytical Chemistry

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A method has been developed for determination of vanadium, as an anionic ternary complex of vanadium(V) with 4-(2-pyridylazo) resorcinol (PAR) and hydrogen peroxide, after separation by capillary electrophoresis (CE). The optimum conditions for the formation of the ternary complex were acetate buffer (3 mmol L(-1)) at pH 6 containing 0.15 mmol L(-1) PAR and 7.1 mmol L(-1) H(2)O(2). The CE separation was conducted using 15 mmol L(-1) acetate buffer at pH 6 as the background electrolyte; the separation potential was -30 kV and the injection time 100 s. The vanadium complex was detected photometrically at 568 nm, by use of a light-emitting diode (LED); the detection limit was 19 ppb. The method was applied to the analysis of vanadium in fertilisers. Clean-up of the digested fertiliser sample, with Sep-Pak C(18) coated with tetrabutylammonium hydroxide, before analysis was used to remove matrix ions which otherwise caused electrophoretic de-stacking. Vanadium levels found in the fertiliser samples by use of the CE method were found to be comparable with results obtained by HPLC and ICP-MS.

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Determination of vanadium as 4-(2-pyridylazo)resorcinol–hydrogen peroxide ternary complexes by ion-interaction reversed-phase liquid chromatography

Cited by 40 publications

References 14 publications

MEKC determination of vanadium from mineral ore and crude petroleum oil samples using precapillary chelation with bis(salicylaldehyde)tetramethyl‐ethylenediimine

MEKC determination of vanadium from mineral ore and crude petroleum oil samples using precapillary chelation with bis(salicylaldehyde)tetramethyl‐ethylenediimine

Determination of Vanadium (IV) and (V) in Southern Nevada Groundwater by Ion Chromatography-Inductively Coupled Plasma Mass Spectrometry~!2009-12-24~!2010-02-10~!2010-05-11~!

Separation and determination of vanadium in fertiliser by capillary electrophoresis with a light-emitting diode detector

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