Determination of nickel and vanadium in crude oils by electrothermal atomic absorption spectrometry and inductively coupled plasma atomic emission spectroscopy after mineralization in an autoclave

Sedykh, É. M.; Bannykh, L. N.; Korobeinik, G S; Starshinova, N. P.

doi:10.1134/s0020168511140196

Cited by 14 publications

(5 citation statements)

References 4 publications

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“…The trace metal contents of the crude oil samples were determined following their DA in triplicates and shown Range of Calibration Standards, µg•mL The crude oil samples are characterized with a dominance of V over Ni with a V/Ni ratio of 3.7 to 5.4 which is indicative of typical of the sapropelic-type organic matter generating oil [24]. Such range of V/Ni ratio is typical of Arab crude oils [29].…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Analytical Procedures in the Determination of Trace Metals in Heavy Crude Oils by Flame Atomic Absorption Spectrophotometry

Barbooti¹

2015

AJAC

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In the present work, four trace metals, V, Ni, Cu and Fe, have been determined in five crude oil samples of Eastern Baghdad area, Iraq by flame atomic absorption spectrophotometry. The crude oils are characterized with API gravity values in the range, 25 -15. The V/Ni ratios for the studied crudes were in the range 3.7 to 5.4 and indicated a typical of the sapropelic-type organic matter. The Ni and V contents were correlated with API gravity where an increase of metal contents with the decrease in the API values could be observed. The plots of V and Ni versus sulfur indicated linear correlation. This is attributed to the increase of porphyrinic structures of the metals. The method of direct dilution (DD) with organic solvent and the standard addition (SA) were evaluated as compared with standard dry ashing-acid dissolution (DA). In most cases the DD method gave V and Ni concentrations that are higher than DA and for the heavier crude oil (API = 15) the DD results were significantly smaller than those of the DA method. The SA method can be a good solution to determine the trace metals in heavy crude oils provided that the addition must not exceed the levels of the metal concentration in the diluted samples.

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Section: Resultsmentioning

confidence: 99%

Evaluation of Analytical Procedures in the Determination of Trace Metals in Heavy Crude Oils by Flame Atomic Absorption Spectrophotometry

Barbooti¹

2015

AJAC

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“…Also, the nickel values in water samples are ranges from 3 to 10 µg L -1 and average levels in drinking water is between 2.0-4.3 µg L -1 [7,8]. Recently, the different techniques include, flame atomic absorption spectrometry (F-AAS) [9], electrothermal atomic absorption spectrometry (ET-AAS) [10], ultrafiltration [11], ion-exchange [12], chemical precipitation [13], electrodialysis [14], adsorption [15], spectrophotometry [16] and inductively coupled plasma-mass spectrometry (ICP-MS) [17] were used for nickel determination in water and human biological samples. As difficulty matrixes and trace concentration in drinking waters and wastewater, the sample preparation must be used to separation Ni ions from samples.…”

Section: Introductionmentioning

confidence: 99%

Zinc based metal–organic framework for nickel adsorption in water and wastewater samples by ultrasound assisted-dispersive-micro solid phase extraction coupled to electrothermal atomic absorption spectrometry

Kazemi

2020

Anal. Method Environ. Chem. J.

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In this research, Zn2(BDC)2(DABCO) metal–organic framework (MOF) as a solid phase was used for separation and preconcentration toxic nickel ions (Ni) from water samples by ultrasound assisted-dispersive-micro solid phase extraction coupled to electrothermal atomic absorption spectrometry (USA-D-μ-SPE/ET-AAS). The MOF nanostructure was characterized by field emission-scanning electron microscope (FE-SEM) and transmission electron microscopey (TEM) for presentation of morphology and size of MOF synthesis. By procedure, 25 mg of Zn2(BDC)2(DABCO) as MOF adsorbent was added to 25 mL of water samples and then, Ni ions chemically adsorbed based on dative bonding of nitrogen in DABCO (1,4-diazabicyclo [2.2. 2]octane); N2(C2H4)3) at pH=8. The adsorbent was separated from liquid phase by syringe cellulose acetate filters (SCAF, 0.2 μm) and Ni ions back extracted from MOF adsorbent before determined by ET-AAS. The maximum recovery of MOF for nickel ions as a physically and chemically adsorption was obtained 34.6% and 98.8% at pH=3 and 8, respectively.

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“…Several analytical methods such as adsorptive cathodic stripping voltammetry (ACSV) [ 2 , 3 ], instrumental neutron activation analysis (INAA) [ 4 , 5 ], graphite furnace atomic absorption spectrometry (GFAAS) [ 6 ], inductively coupled plasma atomic emission spectrometry (ICP-AES) [ 7 , 8 , 9 ], and inductively coupled plasma mass spectrometry (ICP-MS) [ 10 , 11 ] have been developed for the determination of nickel at low concentrations. GFAAS was used here because it is a well-established, as well as cost-effective, technique with excellent sensitivity and low volumes of sample required, and the equipment is available in many laboratories.…”

Section: Introductionmentioning

confidence: 99%

Determination of Trace Nickel in Water Samples by Graphite Furnace Atomic Absorption Spectrometry after Mixed Micelle-Mediated Cloud Point Extraction

et al. 2018

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A simple and sensitive cloud point extraction method for the preconcentration of ultra-trace amounts of nickel as a prior step to its determination by graphite furnace atomic absorption spectrometry was proposed. It is based on the reaction of nickel with 2-(5-bromo-2-pyridylazo)-5-dimethylaminoaniline (5-Br-PADMA) in HAc–NaAc buffer media and mixed micelle-mediated extraction of the complex using the anionic surfactant sodium dodecyl sulfate sodium (SDS) and non-ionic surfactant (1,1,3,3-Tetramethylbutyl)phenyl-polyethylene (Triton X-114). The optimal reaction and extraction conditions such as pH, concentration of 5-Br-PADMA, SDS and Triton X-114, equilibrium temperature, incubation, and centrifuge time were evaluated and optimized. Under the optimal conditions, the calibration graph was linear over the range 0.1–5.5 ng/mL of nickel with a correlation coefficient of 0.9942. The detection limit obtained was 0.031 ng/mL, and the relative standard deviation was 2.1% for nickel (c = 2 ng/mL, n = 6). The proposed method was successfully applied to the determination of nickel in water samples.

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Determination of nickel and vanadium in crude oils by electrothermal atomic absorption spectrometry and inductively coupled plasma atomic emission spectroscopy after mineralization in an autoclave

Cited by 14 publications

References 4 publications

Evaluation of Analytical Procedures in the Determination of Trace Metals in Heavy Crude Oils by Flame Atomic Absorption Spectrophotometry

Evaluation of Analytical Procedures in the Determination of Trace Metals in Heavy Crude Oils by Flame Atomic Absorption Spectrophotometry

Zinc based metal–organic framework for nickel adsorption in water and wastewater samples by ultrasound assisted-dispersive-micro solid phase extraction coupled to electrothermal atomic absorption spectrometry

Determination of Trace Nickel in Water Samples by Graphite Furnace Atomic Absorption Spectrometry after Mixed Micelle-Mediated Cloud Point Extraction

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